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1.
Rev. venez. cir. ortop. traumatol ; 53(1): 27-34, jun. 2021. tab
Article in Spanish | LILACS, LIVECS | ID: biblio-1252908

ABSTRACT

Las técnicas quirúrgicas mínimamente invasivas ayudan a que el proceso natural de la consolidación ósea ocurra proporcionando estabilidad biomecánica suficiente para obtener los mejores resultados. El objetivo de este trabajo es mostrar los resultados clínicos y radiológicos del tratamiento de las fracturas diafisiarias de tibia con osteosíntesis mínimamente invasiva con placa por cara lateral. Se realizó un estudio clínico observacional, prospectivo, longitudinal y no concurrente. Se incluyeron pacientes mayores de 18 años, de ambos sexos, con diagnósticos de fracturas diafisiarias de tibia 42A, 42B ó 42C, abiertas o cerradas. Se estableció tiempo de seguimiento mínimo de 6 meses. Se incluyeron 23 pacientes, 82,60% de sexo masculino. Promedio de edad de 21±5,63(16­49) años. La fractura más frecuente fue la 42B2 en 26,00% de los casos, y 34,80% fracturas fueron abiertas. A las 12 semanas, 65,10% habían alcanzado consolidación Montoya III; y para la semana 16, 91,30% de los pacientes. De acuerdo a la escala ASAMI, se alcanzaron resultados excelentes en 100,00% pacientes para la semana 16. No se presentaron complicaciones como infección, aflojamiento séptico o aséptico del implante, ni fatiga del mismo. El uso de la técnica MIPO para tratamiento de fracturas diafisiarias de la tibia, por cara lateral es una técnica efectiva y segura, con alta tasas de consolidación, mínimas complicaciones y buenos resultados finales(AU)


Minimally invasive surgical techniques help the natural bone healing process to occur, by providing enough biomechanical stability to obtain the best results. The objective is to show the clinical and radiological results of the treatment of diaphyseal tibial fractures with minimally invasive osteosynthesis with lateral plating. An observational, prospective, longitudinal and non-concurrent clinical study was made. Patients older than 18 years, both sexes, with diagnoses of open or closed tibial shaft fractures 42A, 42B or 42C, were included. A minimum follow-up time of 6 months was established. 23 patients were included, 82,60% male. Average age of 21 years. The most frequent fracture was 42B2 in 26,00% cases, and 34,80% were open fractures. At 12 weeks, 65,10% had reached Montoya III consolidation criterias; and for week 16, 91,30% of the patients. According to the ASAMI scale, excellent results were achieved in 100,00% patients. There were no complications such as infection, septic or aseptic loosening of the implant, or fatigue of the implant. The use of the MIPO technique for the treatment of diaphyseal fractures of the tibia on the lateral aspect is an effective and safe technique, with high rates of union, minimal complications and good final results(AU)


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Orthopedic Fixation Devices , Tibial Fractures , Fracture Fixation, Internal , Growth Plate , Traumatology , Orthopedic Procedures
2.
Rev. bras. ortop ; 55(6): 771-777, Nov.-Dec. 2020. tab, graf
Article in English | LILACS | ID: biblio-1156205

ABSTRACT

Abstract Objective To evaluate different femoral fixation devices for medial patellofemoral ligament reconstruction and compare their effectiveness regarding fixation strength up to failure in porcine knees. Methods Thirty porcine knees were used, divided into three groups of 10 knees. The removed grafts were dissected from the extensor tendons of porcine feet. In each group, the graft was fixed to the femur with an interference screw, an anchor, or adductor tenodesis. The three methods were subjected to biomechanical tests using a universal Tensile testing machine at a speed of 20 mm/minute. Results The highest average linear resistance under lateral traction occurred in group 1, "screw fixation" (185.45 ± 41.22 N), followed by group 2, "anchor fixation" (152.97 ± 49, 43 N); the lower average was observed in group 3, "tenodesis fixation" (76.69 ± 18.90 N). According to the fixed error margin (5%), there was a significant difference between groups (p < 0.001); in addition, multiple comparison tests (between group pairs) also showed significant differences. Variability was small, since the variance coefficient was lower than 33.3%. Conclusion Interference screws in bone tunnels and mountable anchors fixation with high resistance wire are strong enough for femoral fixation in porcine medial patellofemoral ligament reconstruction. Adductor tenodesis, however, was deemed fragile for such purpose.


Resumo Objetivo Avaliar diferentes dispositivos de fixação femoral na reconstrução do ligamento patelofemoral medial para comparar sua eficácia quanto à força de fixação até a falha em joelhos suínos. Métodos Foram ensaiados 30 joelhos de suínos subdivididos em 3 grupos de 10 joelhos. Os enxertos retirados foram dissecados de tendões extensores das patas dos suínos. Cada grupo teve o enxerto fixado ao fêmur com parafuso de interferência, âncora, ou tenodese no tendão adutor. Os 3 métodos foram submetidos à testes biomecânicos utilizando uma máquina universal de ensaio de tração com uma velocidade de 20 mm/min. Resultados Verificamos que a média mais elevada da resistência linear sob tração lateral (185,45 ± 41,22 N) ocorreu no grupo 1: "fixação por parafuso," seguido do grupo 2: "fixação por âncora" (152,97 ± 49,43 N), e a média foi menor no grupo 3: "fixação por tenodese" (76,69 ± 18,90 N). Para a margem de erro fixada (5%), comprovou-se a diferença significativa entre os grupos (p < 0,001) e também através dos testes de comparações múltiplas (entre os pares de grupos) verificou-se a ocorrência de diferenças significativas. A variabilidade expressada por meio do coeficiente de variação mostrou-se reduzida, já que a referida medida foi inferior a 33,3%. Conclusão O uso de parafusos de interferência no túnel ósseo de joelhos porcinos é suficientemente forte para fixação femoral na reconstrução do ligamento patelofemoral medial, assim como a fixação com âncoras montáveis com fio de alta resistência. Entretanto, a tenodese no tendão adutor mostrou-se frágil para essa finalidade.


Subject(s)
Animals , Orthopedic Fixation Devices , Swine , Tendons , Traction , Effectiveness , Biomechanical Phenomena , Bone and Bones , Suture Techniques , Transplants , Models, Animal , Tenodesis , Patellofemoral Joint , Femur , Ligaments , Methods
3.
Coluna/Columna ; 19(2): 142-147, Apr.-June 2020. tab, graf
Article in English | LILACS | ID: biblio-1133559

ABSTRACT

ABSTRACT Objective In 2003, Mazda et al. introduced a new device for surgical correction of Adolescent Idiopathic Scoliosis (AIS) called sublaminar bands (SB). The reduction principle that SBs use is posteromedial spinal translation, similar to Luque's wiring, but using polyester bands. Methods We performed a systematic review of the literature on this subject, evaluating the technique in terms of coronal correction, sagittal correction, bleeding, mean surgical time, loss of correction, infection, pseudoarthrosis, and neurological and other complications. The total search resulted in 14 articles published over the last 10 years. We found that the use of SBs in hybrid AIS correction instrumentations provides an average correction of 69% in the frontal plane, a 5° increase in thoracic kyphosis (average increase of 55%), overall complications of 4.5%, and no neurological complications were reported in any of the studies analyzed.. The mean blood loss was 682.5 mL and the mean surgical time was 228.6 minutes. Conclusions We conclude that the literature suggests that this instrumentation is safe, allows good correction in the frontal plane and great correction in the sagittal plane. As for complications, mean surgical time, and blood loss, their averages are lower than those of other constructions used for AIS. Level of evidence IIA; Systematic review.


RESUMO Objetivo Em 2003, Mazda et al. apresentaram um novo dispositivo para correção cirúrgica da Escoliose Idiopática do Adolescente (EIA) denominado Bandas Sublaminares (BS). O princípio de redução que as BS utilizam é a translação posteromedial da coluna vertebral, semelhante àquela dos fios de Luque, através do uso de bandas de poliéster. Métodos Realizou-se uma revisão sistemática da literatura sobre o tema, avaliando a técnica em relação à correção coronal, correção sagital, sangramento, tempo operatório médio, perda de correção, infecção, pseudoartrose, complicações neurológicas e outras complicações. A busca resultou em 14 artigos publicados nos últimos 10 anos. Resultados Observamos que o uso das BS em instrumentações híbridas para correção da EIA proporciona uma redução média de 69% no plano frontal e aumento da cifose torácica de 5º (aumento médio de 55%), 4,5% de complicações em geral e nenhuma complicação neurológica foram apresentadas em todos os estudos analisados. A média de sangramento foi 682,5 mL e o tempo cirúrgico médio de 228,6 minutos. Conclusões Conclui-se que a literatura sugere que essa instrumentação é segura, permite boa correção no plano frontal e grande correção no plano sagital. Em relação às complicações, tempo cirúrgico médio e sangramento, todas essas variáveis em média são inferiores se comparadas as das demais construções utilizadas para EIA. Nível de evidência IIA; Revisão sistemática.


RESUMEN Objetivo En 2003, Mazda et al. presentaron un nuevo dispositivo para corrección quirúrgica de la Escoliosis Idiopática del Adolescente (EIA) denominado Bandas Sublaminares (BS). El principio de reducción que las BS utilizan es la traslación posteromedial de la columna vertebral, similar a aquella de los hilos de Luque, a través del uso de bandas de poliéster. Métodos Se realizó una revisión sistemática de la literatura sobre el tema evaluando la técnica con relación a la corrección coronal, corrección sagital, sangrado, tiempo operatorio promedio, pérdida de corrección, infección, pseudoartrosis, complicaciones neurológicas y otras complicaciones. La búsqueda resultó en 14 artículos publicados en los últimos 10 años. Resultados Observamos que el uso de las BS en instrumentaciones híbridas para la corrección de la EIA proporciona una reducción promedio de 69% en el plano frontal y aumento de la cifosis torácica del 5º (aumento promedio de 55%); 4,5% de complicaciones en general y ninguna complicación neurológica fueron presentadas en todos los estudios analizados. El promedio de sangrado fue 682,5 mL y el tiempo quirúrgico promedio de 228,6 minutos. Conclusiones Se concluye que la literatura sugiere que esta instrumentación es segura, permite buena corrección en el plano frontal y gran corrección en el plano sagital. Con relación a las complicaciones, tiempo quirúrgico promedio y sangrado, todas estas variables en promedio son inferiores si comparadas con las demás construcciones usadas para EIA. Nivel de evidencia IIA; Revisión sistemática.


Subject(s)
Humans , Orthopedic Fixation Devices , Prostheses and Implants , Spinal Curvatures , General Surgery
4.
Rev. medica electron ; 42(2): 1735-1742, mar.-abr. 2020. graf
Article in Spanish | LILACS, CUMED | ID: biblio-1127031

ABSTRACT

Resumen Las fracturas del Atlas representan el segundo tipo más común de lesiones de la columna cervical alta. Con este trabajo se persigue describir la fijación occipito-cervical como tratamiento de la fractura de atlas tipo Jefferson inestable. Se presenta paciente que sufre trauma raquimedular, después de aplicarle un minucioso examen físico y la tomografía axial computada de columna cervical se detecta una fractura tipo Jefferson de atlas con más de 7 mm de separación de sus fragmentos. Al ser esta una fractura inestable de la región cervical alta se decide realizar una fijación occipito-cervical como método de tratamiento de esta lesión. La evolución postquirúrgica del paciente transcurrió sin complicaciones (AU).


Summary Atlas fractures represent the second most common type of upper cervical spine injury. This work aims to describe the occipito-cervical fixation as a treatment for the unstable Jefferson-type atlas fracture. A patient suffering from spinal cord trauma is presented, after applying a thorough physical examination and the computed tomography of the cervical spine, a Jefferson type fracture of atlas with more than 7 mm of separation of its fragments is detected. As this is an unstable fracture of the upper cervical region, it was decided to perform an occipito-cervical fixation as a treatment method for this lesion. The postoperative evolution of the patient was uneventful (AU).


Subject(s)
Humans , Male , Adult , Cervical Atlas/injuries , Therapeutics/methods , Orthopedic Fixation Devices , Tomography/methods , Methods , Fractures, Bone/diagnosis , Fractures, Bone/therapy
5.
Rev. Col. Bras. Cir ; 46(6): e20192284, 2019. graf
Article in Portuguese | LILACS | ID: biblio-1057188

ABSTRACT

RESUMO Objetivo: avaliar recém-nascidos com suspeita de instabilidade do quadril, encaminhados por pediatras a um serviço ortopédico terciário. Métodos: recém-nascidos de uma maternidade pública universitária, com suspeita de instabilidade ou fatores de risco para displasia do quadril, eram encaminhados ao Departamento de Ortopedia e Anestesiologia, Ribeirão Preto/SP, onde eram avaliados clinicamente e através de exames ultrassonográficos dos quadris. Constatada a displasia, iniciava-se o tratamento, e em casos em que havia apenas imaturidade do quadril e exame clínico normal, procedia-se à observação e re-exame clinico e ultrassonográfico com dois ou três meses de vida. Resultados: foram examinados 448 recém-nascidos, com predominância feminina e média de idade na primeira avaliação de 27 dias. A principal causa do encaminhamento foi apresentação pélvica. Em 8% havia sinal de Ortolani positivo e em 12,5% estalido no quadril. No exame ortopédico, 405 (90,5%) pacientes eram normais, 8,5% apresentavam estalido no quadril e 1,1% apresentavam teste de Ortolani positivo. À ultrassonografia, 368 (89,5%) apresentavam imaturidade, 26 (6,3%) tinham displasia moderada e em 17 (4,1%) pacientes os quadris eram francamente displásicos. Todos os casos com sinal de Ortolani positivo apresentavam quadro ultrassonográfico de displasia. Conclusão: houve excesso de diagnóstico de instabilidade do quadril na avaliação do pediatra, o que, no entanto, permitiu ao paciente uma segunda avaliação, em ambiente mais especializado e com mais recursos tecnológicos.


ABSTRACT Objective: to evaluate newborns with suspected hip instability, referred by pediatricians to a tertiary orthopedic service. Methods: newborns from a public university maternity hospital, with suspected instability or risk factors for hip dysplasia, were referred to the Department of Orthopedics and Anesthesiology, Ribeirão Preto/SP, where we evaluated them clinically and through ultrasound examinations of the hips. Once we found dysplasia, we initiated treatment, and in cases in which there was only hip immaturity and normal clinical examination, we performed clinical and ultrasound observation and review at two or three months of age. Results: we examined 448 newborns, with female predominance and average age at first evaluation of 27 days. The main cause of referral was pelvic presentation at delivery. In 8% there was a positive Ortolani sign and in 12.5%,. At orthopedic examination, 405 (90.5%) patients were normal, 8.5% had hip click and 1.1% had positive Ortolani test. At ultrasound, 368 (89.5%) had immaturity, 26 (6.3%) had moderate dysplasia and in 17 (4.1%) patients the hips were frankly dysplastic. All cases with positive Ortolani sign showed dysplasia at ultrasound. Conclusion: there was an excess diagnosis of hip instability in the pediatrician evaluation, which, however, allowed the patient a second assessment, in a more specialized environment and with more technological resources.


Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Joint Dislocations/diagnosis , Hip Dislocation, Congenital/diagnosis , Joint Instability/diagnosis , Orthopedic Fixation Devices , Physical Examination , Severity of Illness Index , Cross-Sectional Studies , Retrospective Studies , Risk Factors , Ultrasonography , Orthopedic Procedures/instrumentation , Joint Dislocations/therapy , Hip Dislocation, Congenital/therapy , Joint Instability/therapy
6.
Article in Spanish | LILACS, BINACIS | ID: biblio-1048476

ABSTRACT

La ruptura del ligamento cruzado anterior es una patología frecuente en deportistas, siendo la reconstrucción del mismo uno de los procedimientos más frecuentes en la cirugía ortopédica. Se han descripto múltiples técnicas quirúrgicas, con distintos injertos y sistemas de fijación. Si bien la fijación femoral es controvertida, el sistema de fijación suspensoria con Endobutton demostró tener una fuerza biomecánica mayor que la de los tornillos interferenciales. La migración intraarticular del Endobutton es una complicación infrecuente que ha sido descripta previamente en la literatura. Presentamos el caso de un paciente masculino de 24 años de edad, con una migración intraarticular del Endobutton posterior a una plástica del ligamento cruzado anterior de cuatro meses de evolución


The anterior cruciate ligament (LCA) ruptures are a frequent pathology in athletes, being the reconstruction one of the most frequent procedures in orthopedic surgery. Many surgical techniques have been described, with different grafts and fixation systems. Although femoral fixation is controversial, the suspensory fixation system with Endobutton have demonstrated a greater biomechanical force in comparison with interferential screws. The intra-articular migration of Endobutton is an infrequent complication that has been previously described in the literature. We present a 24 years male patient, with an intraarticular migration of the Endobutton posterior LCA reconstruction of four months of evolution. Two stage revision ACL reconstruction were performed modifying the fixation method to a bone patellar bone graft


Subject(s)
Adult , Orthopedic Fixation Devices/adverse effects , Foreign-Body Migration/surgery , Reconstructive Surgical Procedures/methods , Anterior Cruciate Ligament Reconstruction/adverse effects , Anterior Cruciate Ligament Injuries/surgery , Knee Joint/surgery , Time Factors , Treatment Outcome
7.
Rev. bras. ortop ; 53(5): 564-569, Sept.-Oct. 2018. tab, graf
Article in English | LILACS | ID: biblio-977875

ABSTRACT

ABSTRACT Objective: The aim of the study was to compare the mechanical behavior of interference screw tibial fixation vs. screw-plus-staple tibial fixation in an animal model. Methods: Thirty-six pieces of swine knee specimens were selected and divided into two groups: Group 1, tibial fixation with interference screw (n = 17), and Group 2, fixation with interference screw and staple (n = 19). The models were submitted to a single cycle of tension testing. The following variables were measured: graft cross-sectional area, failure point on 10 mm (F10), yield load (Fy), and stiffness. Results: The mean values of graft cross-sectional area, F10, Fy, and stiffness did not present significant differences between the groups. Conclusion: The addition of a second staple-type ligament fixation device, complementing the interference screw, did not increase the mechanical safety of the system.


RESUMO Objetivo: Comparar o comportamento mecânico da fixação tibial com parafuso de interferência versus parafuso de interferência com agrafe, em modelo animal. Métodos: Foram selecionadas 36 peças de joelho suíno e divididas em dois grupos: Grupo 1, fixação tibial com parafuso de interferência (n = 17) e Grupo 2, fixação com parafuso de interferência e agrafe (n = 19). Os modelos foram submetidos a teste de ciclo único de tração. Foram mensuradas as seguintes variáveis: medida da área de seção transversal do enxerto, ponto de falha nos 10 mm (F10), yield load (Fy) e rigidez. Resultados: Os valores médios de área de seção transversal do enxerto, F10, Fy, e rigidez não apresentaram diferenças significativas entre os grupos. Conclusão: A adição de um segundo dispositivo de fixação ligamentar tibial tipo agrafe, complementar ao parafuso de interferência, não aumentou a segurança mecânica do sistema.


Subject(s)
Animals , Orthopedic Fixation Devices , Tendons , Tibia , Biomechanical Phenomena , Anterior Cruciate Ligament
8.
Coluna/Columna ; 16(4): 265-269, Dec. 2017. tab, graf
Article in English | LILACS | ID: biblio-890913

ABSTRACT

ABSTRACT Objectives: To evaluate the cervical alignment after the correction of idiopathic scoliosis using high screw density and direct vertebral derotation (DVD) and to correlate it with thoracic kyphosis, spinopelvic parameters, and quality of life. Methods: Retrospective cohort study. We assessed the medical records and radiographs of patients submitted to idiopathic scoliosis surgery using high density of pedicular screws (80%) and DVD with at least 6 months of follow-up. All the radiographic parameters were evaluated in the preoperative period and in the last postoperative visit. Results: A total of 43 patients were evaluated, of which 35 (81%) were female. The mean age was 15 years (11 to 30 years) with a mean follow-up of one year and four months. Regarding Lenke's classification, 14 were of group 1, five of group 2, 10 of group 3, eight of group 4, four of group 5 and two of group 6. Only four patients had sagittal modifier (+) and two sagittal modifier (-).There was no significant difference between pre and postoperative thoracic kyphosis. When we evaluated the groups with +, N and - thoracic modifiers, we observed hypokyphotic and normokyphotic patients (- and N) had an increase in kyphosis, whereas hyperkyphotic patients (+)had a decrease. There was no statistical difference in relation to the radiographic parameters of the cervical spine in the pre and postoperative periods. There was a significant improvement in most of the parameters of the quality of life questionnaires, but no correlation with the cervical radiographic parameters. Conclusion: Correction of idiopathic scoliosis using a high density of pedicular screws and a direct vertebral derotation technique failed to improve thoracic kyphosis or change the cervical sagittal alignment, despite promoting a significant improvement in the parameters of quality of life questionnaires.


RESUMO Objetivos: Avaliar o alinhamento cervical após a correção da escoliose idiopática utilizando alta densidade de parafusos e derrotação vertebral direta (DVD) e correlacionar com a cifose torácica, parâmetros espinopélvicos e qualidade de vida. Métodos: Estudo retrospectivo de coorte. Foram avaliados prontuários e radiografias de pacientes submetidos à cirurgia de escoliose idiopática utilizando alta densidade de parafusos pediculares (80%) e DVD com pelo menos seis meses de seguimento. Todos os parâmetros radiográficos foram avaliados no pré-operatório e no último acompanhamento do pós-operatório. Resultados: Foram avaliados 43 pacientes, sendo 35 (81%) do sexo feminino. A média de idade foi 15 anos (11 a 30 anos) com média de seguimento de um ano e quatro meses. Quanto à classificação de Lenke, 14 eram do grupo 1, cinco do grupo 2, 10 do grupo 3, oito do grupo 4, quatro do grupo 5 e dois do grupo 6. Apenas quatro pacientes apresentavam modificador sagital (+) e dois, modificador sagital (-). Não houve diferença significativa entre a cifose torácica pré e pós-operatória. Quando avaliados os grupos com modificadores torácicos +, N e -, constatamos que os pacientes hipocifóticos e normocifóticos (- e N) tiveram aumento da cifose, enquanto os pacientes hipercifóticos (+) tiveram diminuição. Não houve diferença estatística em relação aos parâmetros radiográficos da coluna cervical no pré e pós-operatório. Houve melhora significativa na maioria dos parâmetros dos questionários de qualidade de vida, mas sem nenhuma correlação com os parâmetros radiográficos cervicais. Conclusão: A correção da escoliose idiopática utilizando alta densidade de parafusos pediculares e técnica de derrotação vertebral direta não conseguiu melhorar a cifose torácica ou alterar o alinhamento sagital cervical, apesar de promover melhora significativa dos parâmetros dos questionários de qualidade de vida.


RESUMEN Objetivos: Evaluar la alineación cervical después de la corrección de la escoliosis idiopática utilizando alta densidad de tornillos y desrotación vertebral directa (DVD) y correlacionar con la cifosis torácica, parámetros espinopélvicos y calidad de vida. Métodos: Estudio retrospectivo de cohorte. Se evaluaron los historiales médicos y radiografías de pacientes sometidos a la cirugía de escoliosis idiopática utilizando alta densidad de tornillos pediculares (80%) y DVD con al menos seis meses de seguimiento. Todos los parámetros radiográficos fueron evaluados en el preoperatorio y en el último seguimiento del postoperatorio. Resultados: Se evaluaron 43 pacientes, siendo 35 (81%) del sexo femenino. El promedio de edad fue de 15 años (11 a 30 años) con una media de seguimiento de 1 año y cuatro meses. En cuanto a la clasificación de Lenke, 14 eran del grupo 1, cinco del grupo 2, 10 del grupo 3, ocho del grupo 4, cuatro del grupo 5 y dos del grupo 6. Sólo cuatro pacientes presentaban un modificador sagital (+) y dos, modificador sagital (-). No hubo diferencia significativa entre la cifosis torácica pre y postoperatoria. Cuando se evaluaron los grupos con modificadores torácicos +, N y -, constatamos que los pacientes hipocifóticos y normocifóticos (- y N) tuvieron aumento de la cifosis, mientras que los pacientes hipercifóticos (+) tuvieron disminución. No hubo diferencia estadística en relación a los parámetros radiográficos de la columna cervical en el pre y postoperatorio. Se observó una mejora significativa en la mayoría de los parámetros de cuestionarios de calidad de vida, pero sin ninguna correlación con los parámetros radiográficos cervicales. Conclusión: La corrección de la escoliosis idiopática utilizando alta densidad de tornillos pediculares y técnica de desrotación vertebral directa no logró mejorar la cifosis torácica o alterar la alineación sagital cervical, a pesar de promover una mejora significativa de los parámetros de los cuestionarios de calidad de vida.


Subject(s)
Humans , Scoliosis/surgery , Orthopedic Fixation Devices , Treatment Outcome , Pedicle Screws
9.
Coluna/Columna ; 15(1): 22-25, Jan.-Mar. 2016. tab, graf
Article in English | LILACS | ID: lil-779075

ABSTRACT

ABSTRACT Objectives: To compare the outcomes of surgical treatment with lumbar fixation using nitinol rods without fusion and with standard lumbar fixation with titanium rods and interbody fusion. Methods: Treatment results of 70 patients with degenerative lumbar scoliosis aged 40 to 82 were analyzed. In all cases pedicle screws and nitinol rods with a diameter of 5.5 mm were used. Thirty patients underwent fixation at L1-S1 and 40 patients underwent fixation at L1-L5. Spinal fusion was not performed. All patients had radiography, CT and MRI performed. The results were assessed according to the Oswestry scale, SRS 22, SF 36 and VAS. The minimum follow-up period for all patients was 2.5 years. For the control group, consisting of 72 patients, pedicle fixation with titanium rods and interbody fusion in the lumbosacral region were performed. Results: The average level of deformity correction equaled 25° (10° - 38°). The analysis of X-ray and CT-scans revealed a single patient with implant instability, two patients with bone resorption around the screws and one patient with rod fractures. Functional radiography 2.5 years after surgery showed an average mobility of the lumbar spine of 21° (15° - 30°). There were no problems at the adjacent levels. Conclusions: The use of nitinol rods in spinal deformity surgery is promising. This technology is an alternative to rigid fixation. Continued gathering of clinical data and its further evaluation is necessary.


RESUMO Objetivos: Comparar os resultados de tratamento cirúrgico com fixação lombar usando hastes de nitinol sem artrodese e com fixação lombar padrão com hastes de titânio e fusão intersomática. Métodos: Foram analisados os resultados do tratamento em 70 pacientes com escoliose lombar degenerativa com idades entre 40 e 82 anos. Em todos os casos, foram usados parafusos pediculares e hastes de nitinol com diâmetro de 5,5 mm. Trinta pacientes foram submetidos à fixação em L1-S1 e 40 pacientes tiveram fixação em L1-L5. Não foi realizada artrodese da coluna. Todos os pacientes fizeram radiografias, TC e RM. Os resultados foram avaliados de acordo com a escala de Oswestry, com o SRS 22, o SF 36 e EVA. O período mínimo de acompanhamento para todos os pacientes foi de 2,5 anos. No grupo controle, com 72 pacientes, realizou-se a fixação do pedículo com hastes de titânio e fusão intersomática na região lombossacral. Resultados: O nível médio de correção da deformidade correspondeu a 25° (10°-38°). A análise das radiografias e das TC revelou um único paciente com instabilidade, dois pacientes com reabsorção óssea ao redor dos parafusos e um paciente apresentou fraturas da haste. A radiografia funcional 2,5 anos após a cirurgia mostrou mobilidade média da coluna lombar de 21° (15°-30°). Não foram encontrados problemas nos níveis adjacentes. Conclusões: O uso de hastes de nitinol na cirurgia de deformidades da coluna é promissor. Essa tecnologia é uma alternativa à fixação rígida. É preciso manter a coleta continuada de dados clínicos e sua posterior avaliação.


RESUMEN Objetivos: Comparar los resultados de tratamiento quirúrgico con fijación lumbar usando varillas de nitinol sin artrodesis y con fijación lumbar estándar con varillas de titanio y fusión intersomática. Métodos: Fueron analizados los resultados del tratamiento en 70 pacientes con escoliosis lumbar degenerativa con edades entre 40 y 82 años. En todos los casos, fueron usados tornillos pediculares y varillas de nitinol con diámetro de 5,5 mm. Treinta pacientes fueron sometidos a fijación en L1-S1 y 40 pacientes tuvieron fijación en L1-L5. No fue realizada artrodesis de la columna. Todos los pacientes hicieron radiografías, TC y RM. Los resultados fueron evaluados de acuerdo con la escala de Oswestry, con SRS 22, SF 36 y EVA. El período mínimo de acompañamiento para todos los pacientes fue de 2,5 años. En el grupo control, con 72 pacientes, se realizó la fijación del pedículo con varillas de titanio y fusión intersomática en la región lumbosacra. Resultados: El nivel medio de corrección de la deformidad correspondió a 25° (10°-38°). El análisis de las radiografías y de las TC reveló un único paciente con inestabilidad, dos pacientes con reabsorción ósea alrededor de los tornillos y un paciente presentó fracturas de la varilla. La radiografía funcional 2,5 años después de la cirugía mostró movilidad media de la columna lumbar de 21° (15°-30°). No fueron encontrados problemas en los niveles adyacentes. Conclusiones: El uso de varillas de nitinol en la cirugía de deformidades de la columna es promisor. Esa tecnología es una alternativa para la fijación rígida. Es preciso mantener la colecta continuada de datos clínicos y su posterior evaluación.


Subject(s)
Humans , Scoliosis/surgery , Orthopedic Fixation Devices , Internal Fixators , Pedicle Screws
10.
Article in Korean | WPRIM | ID: wpr-32819

ABSTRACT

PURPOSE: The purpose of this study was to evaluate the clinical and radiologic outcome of syndesmosis fixation using TightRope™ (Arthrex, Naples, FL, USA) in acute syndesmosis injuries. MATERIALS AND METHODS: Twenty-five consecutive patients with acute syndesmosis injuries, treated using TightRope™, were reviewed. Patients were evaluated preoperatively and at the last follow-up (at least 12 months postoperatively). Clinical outcomes were assessed using American Orthopaedics Foot and Ankle Society (AOFAS) ankle-hindfoot score and self-subjective satisfaction survey. Three radiologic parameters were evaluated two times at the preoperative and final follow up from the nonweightbearing ankle anteroposterior radiographs. RESULTS: The mean AOFAS ankle-hindfoot score was 95.5 at the final follow-up. According to the satisfaction survey, 21 patients chose excellent, and four patients chose good. All radiologic parameters, including the mean tibiofibular clear space, mean tibiofibular overlap, and mean medial clear space on nonweightbearing ankle anteroposterior view, significantly improved after surgery. Complications occurred in only one patient who experienced knot irritation with infection. CONCLUSION: The short-term surgical results of syndesmosis fixation using TightRope™ were good to excellent, both clinically and radiographically. These results suggest that the fixation using TightRope™ is a valid option for acute syndesmosis injury.


Subject(s)
Ankle Fractures , Ankle Joint , Ankle , Follow-Up Studies , Foot , Humans , Orthopedic Fixation Devices
11.
Coluna/Columna ; 14(4): 308-311, Oct.-Dec. 2015. tab, graf
Article in English | LILACS | ID: lil-770239

ABSTRACT

Objective : To evaluate the accuracy of free-hand pedicle screws placement at the seventh cervical vertebra. Methods : The authors have exposed the cervicothoracic junction of 9 adult cadavers (7 male and 2 female) preserved in formalin from the Faculty of Medicine of the Universidad Andina Néstor Cáceres Velásquez, city of Juliaca, Puno - Peru, locating the C7 vertebra based on anatomical parameters. According to previous publications, the entry point for the C7 pedicle was determined as 3-4mm lateral and 5-6mm superior to the center of the lateral mass, and the pedicle was drilled manually and instrumented with 3.5mm screws. After the screws placement, the C7 vertebrae were removed for radiographic analysis. Results : The authors were able to adequately locate the C7 entry point in 12 pedicles (66.6% accuracy), finding a great variability both laterally (2-5mm) and cranially (3-10mm). The angulation in the coronal plane was correct in 13 pedicles (72.3%), despite the incorrect location of the entry point. Angle values in the coronal plane ranged from 38 to 62 degrees. In the sagittal plane angulation, 2 screws were placed in the C6-C7 disc. The midtransversal diameter of the 18 pedicles ranged from 4 to 7mm. Conclusions : The location of the entry point for placement of C7 pedicle screws with pure free-hand technique is very variable due to anatomical differences and the authors recommend some type of guidance for increased safety and accuracy.


Objetivo : Avaliar a acurácia do posicionamento de parafusos pediculares na sétima vértebra cervical pela técnica à mão livre. Métodos : Os autores dissecaram a junção cervicotorácica de nove cadáveres de adultos da Faculdade de Medicina da Universidad Andina Néstor Cáceres Velásquez, da cidade de Juliaca, Puno, Peru, localizando a sétima vértebra cervical com base em parâmetros anatômicos. De acordo com publicações prévias, o ponto de entrada do pedículo de C7 foi determinado como 3-4 mm lateral e 5-6 mm superior ao centro da massa lateral; o pedículo foi perfurado manualmente e instrumentado com parafusos de 3,5 mm. As vértebras foram removidas para avaliação radiográfica. Resultados : Os autores foram capazes de localizar precisamente o ponto de entrada para C7 em 12 pedículos (acurácia de 66,6%), encontrando grande variabilidade tanto no sentido lateral (2 a 5 mm) quanto no craniano (3 a 10 mm). A angulação no plano coronal foi correta em 13 pedículos (72,3%), apesar da localização incorreta do ponto de entrada. Os valores dos ângulos no plano coronal variaram de 38 a 62 graus. Na angulação do plano sagital, foram colocados dois parafusos no disco de C6-C7. O diâmetro mesotransversal dos 18 pedículos variou de 4 a 7 mm. Conclusão : A localização do ponto de entrada dos parafusos pediculares em C7 com a técnica à mão livre é muito variável em decorrência das diferenças anatômicas e os autores recomendam algum tipo de orientação auxiliar para aumentar a segurança e a acurácia.


Objetivo : Evaluar la exactitud de la colocación de tornillos pediculares enla séptima vértebra cervical con la técnica de manos libres. Métodos : Los autores disecaron la unión cervicotorácica de 9 cadáveres adultos (7 hombres y 2 mujeres) conservados en formol de la Facultad de Medicina de la Universidad Andina Néstor Cáceres Velásquez de la ciudad de Juliaca, Puno - Perú, localizando la vértebra C7 con base en los parámetros anatómicos. De acuerdo con publicaciones anteriores, el punto de entrada para la colocación de tornillos pediculares en la vértebra C7 se determinó como 3-4 mm lateral y 5-6 mm superior al punto central de la masa lateral, y se procedió al drilado del pedículo manualmentey a la colocación de tornillos pediculares de 3,5 mm. Luego de la colocación de los tornillos las vértebras C7 fueron retiradas del cadáver para el análisis radiográfico. Resultados : Los autores fueron capaces de localizar adecuadamente el punto de entrada de C7 en 12 pedículos (66,6% de exactitud), se encontrando gran variabilidad en lo que se refiere tanto en la distancia hacia lateral (2-5 mm) como hacia craneal (3-10 mm). La angulación en el plano coronal estuvo correcta en 13 pedículos (72,3%), a pesar de la ubicación incorrecta del punto de entrada. Los valores de los ángulos en el plano coronal variaron de 38 a 62 grados. En la angulación del plano sagital, dos tornillos se colocaron en el disco C6-C7. El diámetro medio transversal de los 18 pedículos osciló entre 4 a 7 mm. Conclusiones : La localización del punto de entrada para la colocación de tornillos pediculares C7 con la técnica de manos libres es muy variable debido a las diferencias anatómicas. Los autores recomiendan utilizar algún tipo de guía para incrementar la precisión y seguridad.


Subject(s)
Pedicle Screws , Orthopedic Fixation Devices , Cervical Vertebrae , Orthopedic Procedures/methods
12.
Rev. bras. ortop ; 50(2): 174-179, Mar-Apr/2015. tab, graf
Article in English | LILACS | ID: lil-748357

ABSTRACT

OBJECTIVE: To verify whether the combination of tibial cross pin fixation and femoral screw fixation presents biomechanical advantages when compared to femoral cross pin fixation and tibial screw fixation for the reconstruction of the anterior cruciate ligament (ACL). METHODS: Thirty-eight porcine knees and bovine extensor digitorum tendons were used as the graft materials. The tests were performed in three groups: (1) standard, used fourteen knees, and the grafts were fixated with the combination of femoral cross pin and a tibial screw; (2) inverted, used fourteen knees with an inverted combination of tibial cross pin and a femoral screw; (3) control, ten control tests performed with intact ACL. After the grafts fixation, all the knees were subjected to tensile testing to determine yield strength and ultimate strength. RESULTS: There was no statistically significant difference in survival techniques in regard to strength, yield load and tension. There was a higher survival compared in the standard curves of yield stress (p < 0.05). CONCLUSION: There is no biomechanical advantage, observed in animal models testing, in the combination of tibial cross pin fixation and femoral screw when compared to femoral cross pin fixation and tibial screw.


OBJETIVO: investigar se a fixação transversa tibial com parafuso femoral apresenta vantagens biomecânicas sobre a fixação transversa femoral com parafuso tibial na reconstrução do ligamento cruzado anterior (LCA). MÉTODO: foram usados como modelos de testes joelhos suínos e tendões extensores digitais bovinos. Foram submetidos à reconstrução do LCA 28 joelhos: 14 foram fixados com parafuso na tíbia e implante transverso no fêmur (grupo padrão) e 14 com parafuso no fêmur e fixação transversa na tíbia (grupo invertido). Os modelos foram submetidos aos testes de tração. RESULTADOS: não houve diferença estatisticamente significante na sobrevivência das técnicas no que tange a força, força máxima sem falha e tensão. Houve uma sobrevivência maior no grupo padrão na comparação das curvas de tensão de limite elástico (p < 0,05). CONCLUSÃO: não há vantagem biomecânica da fixação transversa tibial com parafuso femoral em relação à fixação transversa femoral com parafuso tibial, observada em testes com modelos animais.


Subject(s)
Animals , Anterior Cruciate Ligament , Femur , Mechanics , Orthopedic Fixation Devices , Tendons , Cattle , Swine
13.
Arch. méd. Camaguey ; 19(2): 148-153, mar.-abr. 2015. ilus
Article in Spanish | LILACS, CUMED | ID: lil-745699

ABSTRACT

FUNDAMENTO: las fracturas del pilón tibial son enfermedades traumáticas muy frecuentes debido a un mecanismo de compresión axial de la extremidad. OBJETIVO: mostrar un paciente con fractura del pilón tibial tratado mediante fijación externa triangular. CASO CLÍNICO: paciente de 52 años de edad, blanco, masculino con antecedentes de salud anterior, que sufrió caída de un caballo, luego comenzó con dolor, inflamación e impotencia funcional localizado a nivel distal de la pierna derecha, que le impedía la marcha y el apoyo de la extremidad. En el examen físico se observó deformidad en varo por encima del tobillo, así como herida medial de bordes irregulares de aproximadamente tres centímetros muy contaminada. La palpación reveló movilidad anormal y crepitación a nivel del foco de fractura. A la exploración neurovascular no se detectaron anormalidades. El paciente fue tratado mediante la colocación de aguja de Kirschner para la fractura del peroné y fijación externa en configuración triangular. CONCLUSIONES: la fijación externa constituye una modalidad efectiva en el tratamiento de pacientes con fracturas abiertas del pilón tibial.


BACKGROUND: tibial pylon fractures are traumatic diseases that appear very frequently due to a mechanism of axial compression of the extremity. OBJECTIVE: to present the case of a patient with tibial pylon fracture treated by means of triangular external fixation. CLINICAL CASE: a fifty-two-year-old, white, male patient with antecedents of being a healthy person who fell from a horse and then presented pain, inflammation, and functional impotence located at distal level in the right leg that impaired him from walking and leaning on his extremity. A varus deformity above the ankle and a very contaminated 3-odd cm medial wound of irregular margins, were found in the physical examination. Palpation showed an abnormal mobility and crepitation at the level of the fracture focus. No abnormalities were observed in the neurovascular examination. The patient was treated with the placement of Kirschner wires for the fibula fracture and with external fixation in triangular configuration. CONCLUSIONS: external fixation is an effective method in the treatment of patients with open tibial pylon fractures.


Subject(s)
Humans , Male , Middle Aged , Orthopedic Fixation Devices , Tibial Fractures , External Fixators , Fracture Fixation
14.
Int. j. morphol ; 33(1): 318-326, Mar. 2015. ilus
Article in English | LILACS | ID: lil-743804

ABSTRACT

The objective of the present study was to validate virtual models for the study of dual core and cylindrical screws and evaluate the influence of the geometry of the screws on the mechanical behavior and anchoring. Two models of dual core screws were used, one with a double thread and the other with a single thread, both with a conventional cylindrical screw were used in this study. The stiffness was assessed in a pullout test using polyurethane. Three dimensional virtual models simulating the pullout test were created for finite element analysis. To validate the models, the results were correlated with the mechanical tests. Tensions generated in polyurethane and the screw were studied while simulating the application of force in the direction of the screw pullout, of force transmitted by the rod with the individual standing at rest, and the force transmitted by the rod when performing flexion of the trunk. The dual core screws generated lower tensions in the polyurethane when compared to the cylindrical screw for the forces studied. When evaluating internal tension in the screw, lower levels of tension were presented in the dual core - double thread, higher levels were observed in dual core - single thread, this screw has a smaller internal diameter which may be responsible for this higher generated tension. The dual core screws double thread proportionated good anchorage with more diameter on the region with great tension, avoiding the fracture.


El objetivo de la presente investigación fue validar modelos virtuales para el estudio de tornillos cilíndricos y de pedículo de doble núcleo para evaluar la influencia de la geometría éstos en su anclaje y comportamiento mecánico. Se utilizaron dos modelos de tornillos de doble núcleo, unos de rosca doble y otros de rosca única, ambos tipos conformados por un tornillo cilíndrico convencional. La rigidez se evaluó en una prueba de retirada, utilizando poliuretano. Se crearon tres modelos virtuales tridimensionales que permitieron simular la prueba de retirada para el análisis de elementos finitos. Para validar los modelos, los resultados se correlacionaron con ensayos mecánicos. Se estudiaron las tensiones generadas en el poliuretano y el tornillo a través de la simulación de la aplicación de la fuerza en la dirección de retirada del tornillo, de la fuerza transmitida por la varilla en el individuo en reposo de pie, y la fuerza transmitida por la varilla cuando se realizaba la flexión del tronco. Los tornillos de doble núcleo generan tensiones más bajas en el poliuretano en comparación con el tornillo cilíndrico, para las mismas fuerzas estudiadas. Cuando se evalúa la tensión interna en el tornillo, se presentaron niveles más bajos de tensión en el tornillo de doble rosca, en comparación a los niveles de tensión más altos presentados en los tornillos de rosca única, presentando este tornillo un diámetro interno más pequeño que puede ser responsable de la mayor tensión. Los tornillos de doble núcleo y doble rosca proporcionan un buen anclaje con mayor diámetro y tensión en la región a tratar, evitando la fractura.


Subject(s)
Bone Screws , Computer Simulation , Fracture Fixation/instrumentation , Spine/surgery , Biomechanical Phenomena , Finite Element Analysis , Materials Testing , Orthopedic Fixation Devices
15.
Coluna/Columna ; 13(1): 69-70, Jan-Mar/2014. graf
Article in English | LILACS | ID: lil-709630

ABSTRACT

The posterior fossa decompression is a form of treatment suggested for patients with basilar invagination (BI) secondary to hypoplasia symptomatic of the clivus and atlantoaxial alignment preserved. Based on the fact that the worsening of cranial-cervical kyphosis (decrease of clivus-canal angle to less than 150o) can result in anterior brainstem compression, we propose that some patients may benefit from the cranio-cervical fixation. We present a case report of a patient with BI secondary to clivus hypoplasia who underwent cranio-cervical fixation in extension, with a reduction in clivus-canal angle and improvement of symptoms without posterior fossa decompression.


A descompressão da fossa posterior é uma das formas de tratamento sugeridas para pacientes com invaginação basilar (IB) secundária a hipoplasia sintomática de clivo e alinhamento atlanto-axial preservado. Baseado no fato de que a piora da cifose crânio-cervical (diminuição do ângulo clivo-canal para menos do que 150o) pode resultar em compressão anterior do tronco cerebral, propomos que alguns pacientes podem se beneficiar da fixação crânio-cervical. Apresentamos um caso de paciente com IB secundária a hipoplasia de clivo submetido à fixação crânio-cervical em extensão, com diminuição do seu ângulo clivo-canal e melhora dos sintomas, sem descompressão da fossa posterior.


La descompresión de la fosa posterior es una forma de tratamiento sugerido para los pacientes con invaginación basilar (IB) secundaria a hipoplasia sintomática del clivus con alineación atlantoaxial preservada. Con base en el hecho de que el empeoramiento de la cifosis cráneo-cervical (reducción del ángulo clivus-canal para menos de 150o) puede resultar en la compresión del tronco cerebral anterior, se propone que algunos pacientes pueden beneficiarse de la fijación craneocervical. Presentamos un paciente con IB secundaria a la hipoplasia del clivus sometido a fijación cráneo-cervical en extensión, con reducción del ángulo clivus-canal y mejora de los síntomas sin descompresión de la fosa posterior.


Subject(s)
Humans , Male , Middle Aged , Orthopedic Fixation Devices , Platybasia , Cranial Fossa, Posterior , Kyphosis
16.
Chinese Medical Journal ; (24): 2753-2758, 2014.
Article in English | WPRIM | ID: wpr-318542

ABSTRACT

<p><b>BACKGROUND</b>Anterior cruciate ligament reconstruction (ACLR) has developed dramatically in the last century. Now, ACLR has become a reliable and productive procedure. Patients feel satisfied in >90% cases. The aim of this study was to evaluate the feasibility of allogenetic cortical bone cross-pin (ACBCP) used as a clinical fixation method in anterior cruciate ligament reconstruction on the femoral side based on biomechanical tests in vitro.</p><p><b>METHODS</b>The specimens were provided by the bone banks of the First Affiliated Hospital of People's Liberation Army of General Hospital from September 2011 to June 2012. Fresh deep frozen human allogenetic cortical bone was machined into cross-pins which is 4.0 mm in diameter and 75.0 mm in length. Biomechanical parameters compared with Rigidfix were collected while cross-pins were tested in double-shear test. The load-to-failure test and cycling test were carried out in a goat model to reconstruct anterior cruciate ligament with Achilles tendon autograft on the femoral side fixed by human 4.0 mm ACBCP and 3.3 mm Rigidfix served as control. Maximum failure load, yield load, and stiffness of fixation in single load-to-failure test were compared between the two groups. Cycle-specific stiffness and displacement at cycles 1, 30, 200, 400, and 1 000 were also compared in between.</p><p><b>RESULTS</b>In double-shear test both maximum failed load and yield load of 4.0 mm human ACBCP were (1 236.998±201.940) N. Maximum failed load and yield load of Rigidfix were (807.929±110.511) N and (592.483±58.821) N. The differences of maximum failed load and yield load were significant between ACBCP and Rigidfix, P < 0.05. The shear strength of ACBCP and Rigidfix were (49.243±8.039) MPa and (34.637±3.439) MPa, respectively, P < 0.05. In the load-to-failure test ex vivo, yield load and maximum failed load of ACBCP fixation complexity ((867.104±132.856)N, (1 032.243±196.281) N) were higher than those of Rigidfix ((640.935±42.836) N, (800.568±64.890) N, P < 0.05). However, stiffness did not differ significantly between ACBCP group ((247.116±31.897)N/mm) and Rigidfix group ((220.413±51.332) N/mm, P > 0.05). In the cycling test, the cycle-specific stiffness and displacement at cycles 1, 30, 200, 400, and 1 000 did not differ significantly between the ACBCP group and Rigidfix group, P > 0.05.</p><p><b>CONCLUSIONS</b>Allogenetic cortical bone cross-pin possesses satisfactory biomechanical profile which is safe for ACLR and suitable for an aggressive rehabilitation program. Animal and clinical tests should be recommended before clinical use to secure the ACBCP could successfully substituted by host new bone in vivo.</p>


Subject(s)
Achilles Tendon , General Surgery , Adult , Anterior Cruciate Ligament , General Surgery , Anterior Cruciate Ligament Reconstruction , Female , Femur , General Surgery , Humans , Male , Materials Testing , Middle Aged , Orthopedic Fixation Devices
17.
Article in Chinese | WPRIM | ID: wpr-249275

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the clinical results of using end plate rings in preventing subsidence of titanium cage in anterior cervical corpectomy and fusion (ACCF) surgery.</p><p><b>METHODS</b>The clinical data of 71 patients with cervical spondylotic myelopathy underwent ACCF in single segment from February 2008 to February 2011 were retrospectively analyzed. There were 38 males and 33 females, aged from 39 to 74 years old with a mean of 53.8 years. Thirty-three were used end plate rings and thirty-eight were not used (end plate rings group and no end plate ring group, respectively). The Japanese Orthopaedic Association (JOA) score, Odom's scale, imaging data were used to evaluate the clinical effects. Imaging data including Cobb angle of fusion segment, intervertebral height of anterior border (Da) and posterior border (Dp), the mean intervertebral height (Dm).</p><p><b>RESULTS</b>All patients were followed up from 13 to 34 months with an average of 19.5 months. Between two groups, there was no significant difference in Cobb angle of fusion segment and the mean intervertebral height (Dm) before surgery and one week after surgery. Whereas, one year after surgery, the Cobb angle of end plate ring group was (9.4 ± 3.8) degrees, and contral group was (7.5 ± 3.9) degrees, which was significantly lower than that of end plate ring group. Meanwhile, the Dm of end plate ring group was (57.3 ± 2.2) mm, and no end ring group was (55.2 ± 2.6) mm which was significantly lower than that of end plate ring group. The subsidence in end plate ring group was 57.6%, and was 78.9% in no end plate ring group. There was no significant difference in JOA score before and after surgery between two groups. At 1 year after operation, 90.9% (30/33) got excellent or good results in end plate ring group, 89.5% (33/38) got excellent or good results in contral group.</p><p><b>CONCLUSION</b>The use of end plate rings could not completely prevent the subsidence of titanium cage, however, which can decrease the occurrence rate of the subsidence and lessen its degree.</p>


Subject(s)
Adult , Aged , Bone Plates , Cervical Vertebrae , Pathology , General Surgery , Female , Humans , Male , Middle Aged , Orthopedic Fixation Devices , Spinal Fusion , Methods , Spondylosis , Pathology , General Surgery , Titanium
18.
Rev. cuba. cir ; 52(4): 324-331, oct.-dic. 2013.
Article in Spanish | LILACS | ID: lil-701847

ABSTRACT

Paciente masculino, de 47 años de edad que sufrió un accidente automovilístico en el año 1991, con fractura de columna lumbar , que dejó como secuela una paraparesia flácida postraumática con nivel neurológico de lesión del segmento L5, con disminución de la fuerza muscular y de la sensibilidad en las extremidades inferiores. Se le hizo inmovilización con yeso durante 6 meses y fue intervenido quirúrgicamente en ese propio año. Se le realizó fijación y osteosíntesis con material metálico. Se rehabilitó durante varios anos alcanzando buen fortalecimiento muscular y en noviembre de 2008, en horas de la noche, comienza con dolor intenso a nivel de hipocondrio y hemitórax derecho, que se incrementa con el decúbito supino y mejora con el decúbito lateral izquierdo y con disnea moderada. Al examen físico del tórax, se constató aumento de la matidez del tercio inferior del hemitórax derecho y se auscultaron ruidos hidroaéreos a este nivel. Se realizó radiografía (Rx) de tórax vista posteroanterior(PA), donde se constató elevación del hemidiafragma derecho e imagen compatible con presencia de asas intestinales en el tercio inferior de este hemitórax. Se diagnosticó una hernia diafragmática traumática derecha , que es una enfermedad poco frecuente debido al efecto amortiguador del hígado. Se realizó tratamiento médico inicialmente y una hora después , cesa el dolor. Se redujo la hernia de manera espontánea, lo que se corroboró en el Rx de tórax ( vista PA) evolutivo. Posteriormente fue intervenido quirúrgicamente de forma electiva y el resultado fue favorable(AU)


A 47 years-old male patient, who was injured in a car accident in 1991 and suffered lumbar column fracture that left as a sequel a postraumatic flaccid paraparesia with neurological lesion of L5 segment, reduction of muscle strength and sensitivity in lower limbs. He had plaster for 6 months and was surgically treated in that year. He underwent fixation and osteosynthesis with metal material. During several years, he went to rehabilitation program and finally achieved good muscle strengthening. In November 2008, he began feeling intense pain at hypochondrium and right hemithorax at night and also moderate dyspnea. On the physical exam, it was confirmed that there was increase of lower third of right hemithorax and hydroaerial noises were heard. Chest x-ray using posteroanterior view was performed, which revealed increase of right hemidiaphragm and images compatible with intestinal loop in the lower third of this hemithorax. Right traumatic diaphragmatic hernia was diagnosed. This is an infrequent disease due to the shock-absorbing effect of the liver. He was medically treated and one hour later, the pain ceased. Hernia was reduced spontaneously, which was confirmed in the posterior chest x-ray. He was further operated on electively and the final result was favorable(AU)


Subject(s)
Humans , Male , Middle Aged , Hernia, Diaphragmatic, Traumatic/diagnostic imaging , Orthopedic Fixation Devices , Paraparesis/therapy
19.
Prensa méd. argent ; 99(1): 62-67, mar. 2013. ilus
Article in Spanish | LILACS | ID: lil-719881

ABSTRACT

Las fisuras labio palatinas corresponden a una patología compleja que requiere de un tratamiento integral para resolverla exitosamente. El tratamiento de los pacientes que presentan fisuras labio palatinas debe iniciarse desde el momento del nacimiento con estímulos orotpédicos. Al obtenerse las condiciones favorables de desarrollo, deben entonces considerarse las etapas quirúrgicas, las cuales deben dividirse en dos etapas. Existen grandes controversias respecto al adecuado manejo de estos pacientes. En este trabajo de revisión se describe el protocolo de tratamiento que ha conseguido resolver exitosamente numerosos casos a lo largo de 40 años de experiencia.


The cleft lip and palate correspond to a complex disorder which requires an integrated treatment to resolve it successfully. Treatment of patients with cleft lip and palate should begin from the moment of birth with orthopedic stimulation. When obtaining favorable conditions of development, should then be considered the surgical stages, which should be divided into two stages. There is considerable controversy regardin the appropriate management of these patients. In tis review paper we describe the treatment protocol that has managed to successfully resolve many cases throughout 40 years of experience.


Subject(s)
Humans , Cleft Palate , Cleft Lip/surgery , Orthopedic Fixation Devices , Orthopedics , Palatal Obturators
20.
Article in Chinese | WPRIM | ID: wpr-814895

ABSTRACT

OBJECTIVE@#To evaluate the safety and efficacy of modified technique for removing Nuss bar after Nuss procedure.@*METHODS@#We reviewed 186 patients undergoing bar removal after repair of pectus excavatum with Nuss procedure at our institution from December 2008 to February 2012. All patients had unilateral incision (metallic stabilizers have been used on one side in all patients). Under general anesthesia with single lumen tracheal tube or laryngeal mask, with the patient lying down in supine position, the bar was pulled out along the thoracic wall without overturning or straightening.@*RESULTS@#Totally 132 patients (71.0%) had the bar removed 2 years after the Nuss procedure, 1 (0.5%) removed within 1 year and 53 (28.5%) removed over 2 and half years. The operation time for bar removal was 9-20 (13.1 ± 3.4) min, and the operative blood loss was 3-20 (5.2 ± 2.7) mL. There was no hemorrhage. Three patients (1.6%) developed mild pneumothorax and none showed infection of incision after the operation. All patients were discharged 1 day after the surgery and followed up for 4-48 (21.4 ± 6.8) months. Recurrence was found in the one who which had the bar removed within 1 year (0.5%).@*CONCLUSION@#With modified procedures, Nuss bar can be easily and safely removed 2 years or longer after the Nuss operation. After removing the metallic stabilizer, the bar should be turned and then pulled out along the original surgical incision without bending or turning.


Subject(s)
Adolescent , Blood Loss, Surgical , Child , Child, Preschool , China , Epidemiology , Device Removal , Methods , Female , Funnel Chest , General Surgery , Humans , Male , Orthopedic Fixation Devices , Pneumothorax , Epidemiology , Postoperative Complications , Epidemiology , Prostheses and Implants , Sternum , General Surgery , Young Adult
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