Factors Associated with Readmission within 30 Days after Discharge and In-Hospital Mortality after Proximal Femoral Fracture Surgery in the Elderly: Retrospective Cohort / Fatores associados à reinternação em até 30 dias após a alta e à mortalidade intra-hospitalar após cirurgia por fratura do fêmur proximal em idosos: coorte retrospectiva

Abstract Objective To evaluate the factors associated with readmission within 30 days after discharge (R30) and in-hospital mortality (IHM) in elderly patients undergoing proximal femur fracture surgery (PFF). Methods Retrospective cohort with data from 896 medical records of elderly (≥ 60 years) patients submitted to PFF surgery in a Brazilian hospital between November 2014 and December, 2019. The patients included were followed-up from the date of hospitalization for surgery up to 30 days after discharge. As independent variables, we evaluated gender, age, marital status, pre- and postoperative hemoglobin (Hb), international normalized ratio, time of hospitalization related to the surgery, door-surgery time, comorbidities, previous surgeries, use of medications, and the American Society of Anesthesiologists (ASA) score. Results The incidence of R30 was 10.2% (95% confidence interval [CI]: 8.3-12.3%), and the incidence of IHM was 5.7% (95%CI: 4.3-7.4%). Regarding R30, hypertension (odds ratio [OR]: 1.71; 95%CI: 1.03-2.96), and regular use of psychotropic drugs (OR: 1.74; 95%CI: 1.12-2.72) were associated in the adjusted model. In the case of IHM, higher chances were associated with chronic kidney disease (CKD) (OR: 5.80; 95%CI: 2.64-12.31), longer hospitalization time (OR: 1.06; 95%CI: 1.01-1.10), and R30 (OR: 3.60; 95%CI: 1.54-7.96). Higher preoperative Hb values were associated with a lower chance of mortality (OR: 0.73; 95%CI: 0.61-0.87). Conclusion Findings suggest that the occurrence of these outcomes is associated with comorbidities, medications, and Hb.

Resumo Objetivo Avaliar os fatores associados à reinternação em até 30 dias após a alta (R30) e à mortalidade intra-hospitalar (MIH) em idosos submetidos a cirurgia por fratura do fêmur proximal (FFP). Métodos Coorte retrospectiva com dados de 896 prontuários de idosos (≥ 60 anos) submetidos a cirurgia de FFP em hospital brasileiro, no período entre novembro de 2014 a dezembro de 2019. Os pacientes incluídos foram acompanhados desde a data de internação para a cirurgia até 30 dias após a alta. Como variáveis independentes, foram avaliados o sexo, idade, estado civil, hemoglobina (Hb) pré e pós-operatória, razão normalizada internacional, tempo da internação relacionada à cirurgia, tempo porta cirurgia, comorbidades, cirurgias prévias, uso de medicamentos e escore da American Society of Anesthesiologists (ASA). Resultados A incidência de R30 foi de 10,2% (intervalo de confiança [IC] 95%: 8,3-12,3%) e a de MIH foi 5,7% (IC95%: 4,3-7,4%). Referente a R30, no modelo ajustado, associaram-se ter hipertensão (odds ratio [OR]: 1,71; IC95%: 1,03-2,96), uso regular de medicamentos psicotrópicos (OR: 1,74; IC95%: 1,12-2,72). Tratando-se da MIH, maiores chances estiveram associadas à doença renal crônica (DRC) (OR: 5,80; IC95%: 2,64-12,31), maior tempo de internação (OR: 1,06; IC95%: 1,01-1,10) e R30 (OR: 3,60; IC95%: 1,54-7,96). Maiores valores de Hb pré-operatória associaram-se à menor chance de mortalidade (OR: 0,73; IC95%: 0,61-0,87). Conclusão Os achados sugerem que a ocorrência destes desfechos está associada à comorbidades, medicamentos e Hb.

Ventana cortical anterior para extracción de vástago en revisión de artroplastia total de cadera: una alternativa a la osteotomía trocantérica extendida / Anterior cortical window for stem extraction in total hip arthroplasty revision: an alternative to extended trochanteric osteotomy

Total hip arthroplasty (THA) is a safe and effective procedure in patients with end-stage ostheoarthritis. In the last years the indication for THA is increasingly in younger patients, associated with rising of life expectancy, this imply an increase in revision surgeries for various causes such as: aseptic loosening, fractures and infections. In this context and in view of the need to replace the femoral component, alternatives to the classic extended trochanteric osteotomy (ETO) arise, such as the anterior cortical window (ACW), which allows the rate of complications to be reduced with excellent results. We present the case of a 51-year-old patient who sustained one episode of dislocation, who required revision surgery due to aseptic loosenig, where the ACW was used for the extraction of the stem. In addition, a review of the literature was made to show advantages and complications regarding ETO.

Management of Bone Failure in Fracture of the Distal Region of the Femur Using the Masquelet Technique with Fibula Graft Associated with Iliac-Crest Graft: Report of Two Cases / Manejo de falha óssea em fratura da região distal do fêmur pela técnica de Masquelet com enxerto de fíbula associado a enxerto de crista ilíaca: Relato de dois casos

Abstract Two cases of bone failure after fracture of the distal region of the femur treated with the Masquelet technique are presented. The first case involves acute bone loss, and the second, pseudarthrosis. The proper management of these lesions led to consolidation and a good functional result.

Resumo Dois casos de falha óssea após fratura da região distal do fêmur tratados pela técnica de Masquelet são apresentados. O primeiro caso envolve uma perda óssea aguda, e o segundo, uma pseudoartrose. O manejo adequado dessas lesões levou à consolidação e a um bom resultado funcional.

Atypical femur fractures associated with chronic bisphosphonates use: A case series with 66 patients / Fraturas atípicas do fêmur associadas ao uso crônico de bisfosfonatos: Uma série de casos de 66 pacientes

Abstract Objective The present study aims to describe outcomes from a series of surgically treated patients with atypical femoral fracture due to bisphosphonates use, in addition to correlate the time of previous medication use with fracture consolidation time, and to compare the consolidation time of complete and incomplete fractures. Methods This is an observational, retrospective study with 66 patients diagnosed with atypical femur fractures associated with chronic bisphosphonates use. The patients underwent orthopedic surgical treatment at a referral hospital from January 2018 to March 2020. Results All patients were females, with two bilateral cases. Fracture consolidation occurred in all cases, with an average time of 2.3 months and a follow-up time of 5.8 months. The average time of bisphosphonates use was 7.8 years. There was no correlation between the time of previous bisphosphonates use and the time for fracture consolidation. Consolidation time differed in complete and incomplete fractures. Conclusion Surgical treatment with a long cephalomedullary nail resulted in consolidation in all patients. The consolidation time was longer in complete fractures when compared with incomplete lesions, and there was no correlation between the time of previous bisphosphonates use and the consolidation time . Level of evidenceLevel IV, case series

Resumo Objetivo Descrever os resultados de uma série de pacientes tratados cirurgicamente com diagnóstico de fratura femoral atípica associada ao uso de bisfosfonatos, assim como correlacionar o tempo de uso prévio da medicação com o tempo de consolidação da fratura e comparar o tempo de consolidação das fraturas completas e incompletas. Métodos Trata-se de um estudo observacional e retrospectivo de 66 pacientes com diagnóstico de fratura atípica do fêmur associada ao uso crônico de bisfosfonatos. Os pacientes foram submetidos ao tratamento cirúrgico ortopédico em hospital de referência no período de janeiro de 2018 a março de 2020. Resultados Os pacientes incluídos no estudo eram todos do sexo feminino, com dois casos bilaterais. A consolidação da fratura ocorreu em todos os casos com tempo médio de 2,3 meses e seguimento de 5,8 meses. O tempo médio de uso de bisfosfonatos foi de 7,8 anos. Não houve correlação do tempo de uso prévio de bisfosfonatos com o tempo de consolidação das fraturas. Houve uma diferença do tempo de consolidação entre as fraturas completas e incompletas. Conclusão Houve consolidação após tratamento cirúrgico com haste cefalomedular longa em todos os pacientes do presente estudo, sendo o tempo de consolidação maior nas fraturas completas em relação às incompletas, e não houve correlação entre o tempo de uso prévio de bisfosfonatos e o tempo de consolidação. Nível de evidênciaNível IV, série de casos

Research of Building 3D Model in External Fixator for Proximal Femoral Fracture Based on Locking Plate Shape / 中国医疗器械杂志

The software of 3D-Modeling(UG NX 10.0) was used to design a new external fixator model for proximal femoral fracture, and fresh femoral cadaver specimens were used to simulate experimental operation. The results showed that the external fixator designed with the proximal femoral locking plate shape can improve the accuracy of Kirschner wire penetration into the femoral neck, reduce fluoroscopic and soft tissue incision injuries, and make a good stability and is easy to operate, which has a certain value for patients with proximal femoral fracture, such as intolerant surgery and poor physical condition.

Intraoperative IPC combined with 3M warming instrument to prevent lower extremity deep venous thrombosis in patients undergoing proximal femoral anti rotation intramedullary nailing / 中国骨伤

OBJECTIVE@#To explore the effect of intermittent pneumatic compression(IPC) combined with 3M thermometer on the prevention of deep venous thrombosis(DVT) in patients with femoral intertrochanteric fracture.@*METHODS@#From March 2016 to August 2019, 127 patients with femoral intertrochanteric fractures who underwent proximal femoral nail antirotation(PFNA) were retrospectively analyzed. They were divided into two groups according to different methods of thrombus prevention and treatment. Among them, 63 patients in group A did not use IPC and 3M thermometer;64 cases in group B were treated with IPC combined with 3M thermometer. Color Doppler ultrasound was used to dynamically monitor the DVT and changes of lower limbs during perioperative period. The venous thrombosis of lower limbs was monitored at 0, 24, 72 h and > 72 h after operation(recheck every 3 days until discharge).@*RESULTS@#Occurrence of DVT of lower limbs after PFNA operation in two groups:there were 5 cases (7.8%) in group B and 20 cases (31.7%) in group A, there was significant difference between two groups (P=0.001). There was no significant difference in lower limb DVT between two groups at 0, 72 and > 72 h after operation(P>0.05), but the formation rate of group A was significantly higher than that of group B at 24 h after operation (P=0.049). There was no significant difference in DVT formation between group A and group B(P>0.05). However, the formation of DVT in group A was significantly higher than that in group B(P=0.012).@*CONCLUSION@#Intraoperative IPC combined with 3M thermostat can effectively prevent DVT of lower limbs in patients undergoing PFNA surgery.

Fractura de fémur distal asociada con una lesión del tendón cuadricipital: reporte de dos casos / Fractures of the distal femur associated with a complete quadricipital tendon injury: report of two cases

Las fracturas de fémur distal, especialmente las abiertas, se asocian con traumas de alta energía. Las lesiones asociadas al-rededor de la rodilla son frecuentes; sin embargo, la asociación con una lesión completa del tendón cuadricipital ha sido poco documentada. El diagnóstico temprano y un adecuado tratamiento de ambas lesiones son fundamentales para conseguir buenos resultados posoperatorios. Presentamos dos casos de fracturas intrarticulares de fémur distal expuestas asociadas con lesiones completas del tendón cuadricipital. La reparación de la lesión tendinosa asociada mediante túneles transóseos luego de la fijación de la fractura permite comenzar un protocolo de rehabilitación temprano, esencial para obtener buenos resultados funcionales.Palabras clave: Fractura; fémur distal; lesión; tendón cuadricipital; aparato extensor. Nivel de Evidencia: V

Fractures of the distal femur, especially open fractures, occur in association with high-energy trauma. The presence of associated injuries around the knee is common; however, the association with a complete quadricipital tendon injury has been poorly documented. Early diagnosis and adequate treatment of both injuries is essential to achieve good postoperative outcomes. We present two cases of exposed intra-articular distal femoral fractures associated with complete quadricipital tendon injuries. The repair of the associated tendon injury with transosseous tunnels after fracture fixation allows an early rehabilitation protocol, essential to obtain good functional outcomes.Key words:Fracture; distal femur; injury; quadricipital tendon; extensor mechanism. Level of Evidence: V

Osteosíntesis con placa helicoidal en las fracturas de fémur distal / Helical plate osteosynthesis in distal femur fractures

Introducción: En pacientes con fracturas de fémur distal con alto grado de conminución metafisaria (AO 33 C2, C3) y fracturas periprotésicas (Vancouver tipo C), el uso de doble osteosíntesis brinda mayor estabilidad a la fractura. Las placas helicoidales se emplean cada vez más con el objetivo de evitar dañar elementos nobles relacionados con el abordaje. Materiales y métodos: Entre 2017 y 2021, seis pacientes fueron tratados mediante osteosíntesis con doble placa (por vía lateral y helicoidal por vía medial). La serie se compone de cuatro mujeres y dos hombres. El 66% (4 pacientes) tenía fracturas de fémur distal, y el resto (33%), fracturas periprotésicas tipo Vancouver C. Resultados: Se observó la consolidación radiográfica en todos los pacientes, a los 6 meses de la cirugía, con retorno normal a la actividad previa. Ninguno sufrió una lesión vasculonerviosa asociada. Conclusiones: La placa helicoidal es una gran opción para las fracturas de fémur distal con conminución y las fracturas femorales periprotésicas tipo Vancouver C. Esto demuestra que, aplicando los principios básicos de osteosíntesis, con una técnica sencilla, se pueden suplir materiales más sofisticados, y obtener resultados radiográficos similares. Nivel de Evidencia: IV

Introduction: The use of double osteosynthesis for the treatment of fractures of the distal femur with metaphyseal comminution (AO 33C2, C3) and periprosthetic fractures (Vancouver C) provides greater stability. The use of helical plates has increased in or-der to avoid vascular damage related to the approach. Materials and methods: Between 2017 and 2021, six patients were treated by double plate osteosynthesis (helical plate by medial approach). The series consisted of four females and two males, 66% (4 patients) had distal femoral fractures, and the rest (33%, 2 patients) were diagnosed with Vancouver C periprosthetic fractures. Results: In all cases, radiographic consolidation was observed 6 months after surgery, with a normal return to activities of daily living. None of them presented an associated neurovascular injury. Conclusion: The helical plate is a great option in distal femur fractures and Vancouver C periprosthetic femoral fractures. By applying the basic principles of osteosynthesis, sophisticated ma-terials can be supplied, obtaining good clinical, functional, and radiographic outcomes. Level of Evidence: IV

Traumatic recurrent hip dislocation associated with femoral head fracturere constructed with iliac crest autograft / Luxación recurrente de cadera asociada a fractura de cabeza femoral reconstruida con autoinjerto de cresta iliaca

Hip femoral head fractures are extremely uncommon, but likely associated with traumatic hip dislocations. Both lesions require emergent treatment to avoid further complications.19-year-old male patient was received after a high-energy motor vehicle accident with severe brain and thoraco-abdominal trauma and a displaced femoral head fracture with posterior hip dislocation with no acetabular fracture. An emergent open reduction and internal fixation with 2 headless screws was performed, as well as posterior capsule repair. After 1 month as an inpatient in Intensive Care Unit, he sustained a new episode of posterior hip dislocation. Consequently, a second successful surgical reduction was obtained, and hip stability was achieved by posterior reconstruction with iliac crest autograft fixed with cannulated screw and posterior structure repair. Two years later, he was able to walk independently and he does not present any signs of degenerative joint disease nor avascular necrosis.

Las fracturas de la cabeza femoral son extremadamente raras y están asociadas comúnmente con una luxación de cadera traumática. Ambas lesiones requieren tratamiento urgente con el objetivo de evitar complicaciones posteriores. Un paciente varón de 19 años fue trasladado tras un accidente de tráfico de alta energía en el que sufrió un traumatismo craneoencefálico y toracoabdominal grave, además de una fractura de cabeza femoral desplazada junto a una luxación posterior de cadera sin afectación acetabular. De manera urgente, fue intervenido mediante una reducción abierta y fijación interna de la fractura con dos tornillos canulados sin cabeza y reparación de la cápsula articular posterior. Tras un mes de ingreso en la unidad de cuidados intensivos, sufrió un nuevo episodio de luxación posterior de cadera. Debido a ello, se realiza una segunda intervención quirúrgica con reducción abierta y en la que se obtiene una adecuada estabilidad de la cadera mediante reconstrucción posterior con la adición de autoinjerto tricortical de cresta ilíaca y reparación capsular posterior. Después de dos años de seguimiento, el paciente deambula de manera independiente, sin dolor y sin signos degenerativos ni de necrosis avascular en las pruebas de imagen.

Analysis of the effect of surgical treatment of periprosthetic femoral fractures after hip replacement / 中国骨伤

OBJECTIVE@#To analyze and compare the clinical efficacy of different types of surgical treatment of periprosthetic femoral fracture(PFF) after hip arthroplasty (HA).@*METHODS@#From September 2010 to September 2016, 47 patients (47 hips) with periprosthetic fractures after total hip arthroplasty were retrospectively analyzed, including 13 males and 34 females. According to Vancouver classification, there were 2 patients with type AG, 17 patients with type B1, 19 patients with type B2, 7 patients with type B3 and 2 patients with type C. The age of patients ranged from 56 to 94 (71.5±8.3) years. After admission, nutritional risk screening (NRS2002) was used to assess the nutritionalstatus of the patients. Eighteen patients (38%) had malnutrition risk (NRS>3 points). After admission, the patients were given corresponding surgical treatment according to different types. Intraoperative blood loss was recorded. Harris score was used to evaluate the hip function. VAS pain score was performed on admission and after operation.@*RESULTS@#All the 47 patients were followed up for 19 to 62 (34±11) months. The Harris scores were (41.8±12.1) and (89.0±2.6) respectively before and 1 year after operation, and the difference was statistically significant (@*CONCLUSION@#The treatment of hip periprosthetic fracture patients should be based on the general situation of patients, imaging data, intraoperative correction classification, etc. to develop individualized treatment plan in line with patients. For patients with preoperative malnutrition risk, preoperative nutritional intervention may reduce intraoperative bleeding.

Effect of double plate technique combined with autogenous iliac bone graft in the treatment of femoral nonunion after intramedullary nailing / 中国骨伤

OBJECTIVE@#To investigate the clinical effect of double plate combined with iliac bone graft in the treatment of femoral nonunion after intramedullary nailing.@*METHODS@#From December 2008 to December 2017, double plate combined with autogenous iliac bone graft was used to treat femoral nonunion after intramedullary nailing. There were 11 cases, including 10 males and 1 female, aged 35 to 62 years, and the time from fracture to nonunion was 12 to 20 months. According to Judet classification, there were 8 cases of atrophic nonunion and 3 cases of proliferative nonunion. Regular follow-up was conducted after operation to record the fracture healing time, load-bearing activity time and complications, and to observe the repair effect of double plate fixation combined with iliac bone graft on nonunion after femoral shaft fracture operation.@*RESULTS@#All patients were followed up for 12 to 22 months. The operation time was 70 to 130 min and the blood loss was 180 to 350 ml. After operation, 2 cases had knee stiffness, which recovered after passive exercise with CPM machine for 2 weeks;1 case had pain in iliac bone donor area, which was relieved after 3 months. The time of fracture healing was 24 to 40 weeks, and the time of complete weight-bearing activity was 14 to 32 weeks. SF-36 quality of life score at the final follow-up:body pain 70 to 82, activty 70 to 82, social function 72 to 83, the overall health 72 to 82. At the end of the follow-up, there were no complications such as limb shortening, infection, poor wound healing, internal fixation failure (fracture, loosening).@*CONCLUSION@#It is an effective method to treat nonunion of femur after intramedullary nailing by using double plate combined with autogenous iliac bone graft.

Prevention and treatment of complications in the treatment of femoral shaft closed fracture with core drilling intramedullary nail / 中国骨伤

OBJECTIVE@#To summarize the complications of core drilling intramedullary nail in the treatment of femoral shaft closed fracture and explore the treatment strategy.@*METHODS@#From August 2014 to June 2018, a total of 215 patients with closed femoral shaft fractures were treated with closed reduction core drill intramedullary nail, including 129 males and 86 females, aged from 18 to 62 years, with an average of (44.2±10.6) years old. The time from injury to operation was 3 to 21 days. There were 102 cases of AO type A fracture, 82 cases of AO type B fracture and 31 cases of AO type C fracture. The time of operation, the amount of blood loss during operation, the duration of hospitalization, the time of fracture healing and the HSS score of knee joint function at the last follow-up were recorded. The observation of complications included:iatrogenic fracture, core drill broken, core drill twist, postoperative infection, and fracture nonunion.@*RESULTS@#The average operation time was (63.2± 15.6) min and intraoperative blood loss was (150.0±34.5) ml. All the incisions reached grade A healing. Patients were follow up for a mean of (18.5±3.2) months, the average hospital stay was (4.3±1.2) days, and the average fracture healing time was (5.6±2.3) months. At the final follow-up, the average HSS score of knee joint was 90.3±4.7. Related complications occurred in 37 cases (17.2%). The core drill related complications occurred in 13 cases (6.0%), including core drill broken in 5 cases (2.3%), core removal in 1 case and slotting in 4 cases;core drill twist in 8 cases (3.7%). After the core was cut, the core was removed. Similar complicationsof conventional intramedullary nail:iatrogenic fracture was performed in 12 cases (5.6%), including 10 cases of fracture end split and 2 cases of distal perimedullary fracture of intramedullary nail. The patients with cleavage at the fracture end were not treated after judging their stability, and the patients with fracture around the distal end of the intramedullary nail were fixed with auxiliary steel plate during operation;1 case(0.4%) with delayed infection after operation, debridement and external fixation was replaced and healed after bone transfer; fracture nonunion occurred in 11 cases (5.1%), of which 7 cases (3.3%) were hypertrophic nonunion and healed with additional plate. Atrophic nonunion occurred in 4 cases (1.9%), which healed after additional steel plate and bone graft.@*CONCLUSION@#Core drilling intramedullary nail is an effective method for the treatment of closed femoral shaft fracture, and the complications include core drill related complications and conventional intramedullary nail similar complications. Accurate preoperative evaluation, careful operation during operation and early postoperative symptomatic treatment can effectively reduce the occurrence of related complications.

Técnicas de extracción de clavos endomedulares retrógrados de fémur rotos. Presentación de tres casos / Retrograde femoral intramedullary nail extraction techniques. Report of three cases

Introducción: La indicación de realizar una osteosíntesis con un clavo endomedular retrógrado en las fracturas de fémur se ha incrementado en los últimos años y, con ello, la cantidad de complicaciones. Se describen tres técnicas quirúrgicas para el manejo del fragmento proximal de la osteosíntesis endomedular rota. Desde marzo de 2001 hasta enero de 2019, se realizaron 321 osteosíntesis con clavos endomedulares retrógrados de fémur en nuestra institución. La tasa de rotura del implante asociada a una seudoartrosis fue del 0,9%. Se realizaron técnicas mínimamente invasivas para la extracción del implante, preservando las partes blandas. Se logró la reosteosíntesis definitiva con la consiguiente consolidación en un tiempo medio de 140 días. Conclusiones: Las técnicas utilizadas fueron simples, seguras, mínimamente invasivas y muy reproducibles. Nivel de Evidencia: IV

background: The indication for osteosynthesis with a retrograde intramedullary nail in femur fractures has increased in recent years and with it, the number of complications. Three surgical techniques are described for the management of the proximal fragment of the broken intramedullary osteosynthesis. From March 2001 to January 2019, 321 osteosyntheses with retrograde femoral intramedullary nails were performed at our institution. The implant rupture rate associated with nonunion was 0.9%. Minimally invasive techniques were performed to remove the implant, preserving the soft tissues. Definitive reosteosynthesis was achieved with the consequent consolidation in an average time of 140 days. Conclusions: The techniques used were simple, safe, minimally invasive, and reproducible. Level of Evidence: IV

Obturator dislocation of total hip arthroplasty with disassembly of the prosthesis components and periprosthetic fracture in morbid obese patient / Luxación obturatriz de una prótesis total de cadera con desensamblaje de los componentes y fractura periprotésica en un paciente obeso

Abstract: Introduction: Anterior dislocation is a rare complication of total hip arthroplasty (THA). There exist only three cases in the literature. None of them report disassembly of the prosthesis components. We present a morbidly obese woman who suffered an irreducible obturator dislocation of an infected total hip arthroplasty (THA), due to uncontrolled adduction during an early debridement surgery. Following unsuccessful closed reduction attempts, a Vancouver B2 periprosthetic fracture and disassembly of the prosthetic components were observed. Two-stage revision THA was necessary to resolve the infection and restore hip functionality. In obturator dislocation, the femoral head prosthetic can be trapped in the obturator foramen, and this may disassemble the prosthesis components during reduction maneuvers; there's also risk of periprosthetic fracture. This mandate an open reduction of the joint. Patient obesity could be a determining factor for this rare type of hip arthroplasty dislocation. Obturator dislocation is an extremely rare complication of the total hip arthroplasty, whose reductions should be handled with caution given the risks of periprosthetic fractures. In most cases, an open reduction of the joint is required. Clinical importance: Our work is likely to be of great interest because it offers tips for the management of this rare complication based on our experience.

Resumen: Introducción: La luxación anterior es una complicación poco frecuente de la artroplastia total de cadera (ATC). Sólo existen tres casos en la literatura. Ninguno de ellos informa del desmontaje de los componentes de la prótesis. Presentamos el caso una mujer obesa que sufrió una luxación irreducible de una artroplastia total de cadera (THA), la cual estaba infectada, debido a la aducción no controlada durante una cirugía de desbridamiento temprano. Después de los intentos fallidos de reducción cerrada, se presentó una fractura periprotésica clasificada como Vancouver B2 y el desmontaje de los componentes protésicos. Ameritó cirugía de revisión en dos etapas, lo cual se realizó para resolver la infección y restaurar la funcionalidad de la cadera. En la luxación obturatriz, la cabeza femoral puede quedar atrapada en el agujero obturador y, como consecuencia, favorecer la disociación de los componentes protésicos al intentar la reducción, asimismo puede favorecer un brazo de palanca que produzca una fractura periprotésica. La obesidad puede ser un factor determinante para la producción de esta rara complicación. Por todo lo anterior, se recomienda considerar de entrada la reducción abierta. La luxación obturatriz es una complicación rara en la artroplastia total de cadera; su tratamiento puede ser difícil y asociarse a fracturas. La relevancia de este caso es que permite mostrar algunas estrategias de manejo para prevenir complicaciones catastróficas.

Prevention of bone infection after open fracture using a chitosan with ciprofloxacin implant in animal model

Abstract Purpose To evaluate different concentrations of ciprofloxacin to prevent infection after open fracture contaminated with S. aureus in rats using absorbable local delivery system. Methods Fifty-two Wistar rats were assigned to six groups. After 4 weeks, all animals underwent 99mTc-ceftizoxima scintigraphy evaluation, callus formation measurement and histological analysis. ANOVA, t-Student and Kruskal Wallis were used for quantitative variables statistical analysis, whereas qui square and exact Fisher were used for qualitative variables. Results Treatment using 25% and 50% of ciprofloxacin incorporated at the fracture fixation device were effective in preventing bone infection compared to control group (p<0.05). Chitosan were not effective in preventing bone infection when used alone compared to control group (p>0.05). Histological findings demonstrated bone-healing delay with 50% of ciprofloxacin. No difference in callus formation were observed (p>0.05). Conclusion Local delivery treatment for contaminated open fracture using chitosan with ciprofloxacin is effective above 25%.

Description of a minimally invasive technique with a modified instrument for the osteosynthesis of proximal femoral fractures using the standard DHS and case series / Osteossíntese de fraturas do fêmur proximal minimamente invasiva com um instrumento modificado usando o DHS padrão: descrição de técnica e série de casos

ABSTRACT Introduction: the number of hip fractures is estimated to increase from 1.66 million in 1990 to 6.26 million by 2050. Internal fixation is the most common surgical treatment for intertrochanteric fractures. Objectives: the objective of the present research is to describe a minimally invasive technique with a modified instrument for the treatment of stable proximal femoral trochanteric fractures using the standard DHS, classified as Tronzo types 1 and 2 (AO 31A1.2), and presenting a case series. Methods: a case was selected to present the technique. Patients operated by this technique undergo a clinical evaluation and preoperative preparation as routine. The criteria for inclusion in the study were the presence of stable fracture of the proximal femur verified by two hip specialist orthopedists, and operated by the minimally invasive technique with a modified instrument using a standard DHS. Exclusion criteria were cases of patients operated for unstable fractures, and the use of other surgical techniques. A case series of 98 patients was performed and discussed. Results: minimally invasive technique with a modified instrument using the standard DHS device can reduce bleeding, it decreases soft tissue injuries, surgical time, and hospital stay, as any other MIPO procedures. Ninety-eight patients underwent the operation (Tronzo types I and II), 59 female and 39 male, ages from 50 to 85 years old. Immediate post-operative complications were shortening of the lower limb, loss of fracture reduction, and death by clinical complications. Conclusion: the present study describes a minimally invasive surgical technique using a modified instrument to perform proximal femoral osteosynthesis for stable trochanteric fractures, using the standard DHS.

RESUMO Introdução: estima-se que o número de fraturas de quadril aumente de 1,66 milhão em 1990 para 6,26 milhões em 2050. A fixação interna é o tratamento cirúrgico mais comumente utilizado para as fraturas intertrocantéricas. Objetivos: o objetivo da presente investigação é descrever uma técnica minimamente invasiva com um instrumento modificado para o tratamento de fraturas trocantéricas femorais proximais estáveis, classificadas como tipos I e II de Tronzo (AO 31A1.2), usando o DHS padrão, e apresentar uma série de casos. Métodos: foi selecionado um caso aleatório para apresentar a técnica. Os pacientes operados por essa técnica passam por avaliação clínica e preparo pré-operatório de rotina. Os critérios para inclusão no estudo foram a presença de fratura estável do fêmur proximal, verificada por dois ortopedistas especialistas em quadril, e operada pela técnica minimamente invasiva com um instrumento modificado usando um DHS padrão. Os critérios de exclusão foram os casos de pacientes operados por fraturas instáveis e o uso de outras técnicas cirúrgicas. Uma série de casos de 98 pacientes foi realizada e é discutida. Resultados: a técnica minimamente invasiva com o instrumento modificado usando o dispositivo DHS padrão pode reduzir a hemorragia, as lesões dos tecidos moles, o tempo cirúrgico e a estadia hospitalar, tal como quaisquer outros procedimentos de osteossíntese minimamente invasivos. Noventa e oito pacientes foram operados (tipos I e II de Tronzo), 59 do sexo feminino e 39 do masculino, com idades entre 50 e 85 anos. As complicações pós-operatórias imediatas foram encurtamento do membro inferior, perda da redução da fratura e morte por complicações clínicas. Conclusão: o presente estudo descreve uma técnica cirúrgica minimamente invasiva, utilizando um instrumento modificado para realizar osteossíntese femoral proximal para fraturas trocantéricas estáveis, utilizando o DHS padrão.

Fracturas de fémur proximal de alta energía tratadas con reducción a través de mini-open y clavo cefalo-medular / High energy proximal femur fractures treated with cephalo-medullary nails and open reduction through mini-open approach

OBJETIVO: Evaluar los resultados radiológicos de pacientes con fractura de fémur proximal tratados con clavo cefalo-medular y reducción abierta a través de abordaje mini-open. MATERIAL Y MÉTODOS: Estudio retrospectivo-descriptivo de una serie consecutiva de 45 pacientes (38 hombres, 7 mujeres, edad promedio 52 años) con fractura de cadera de alta energía tratados con clavo cefalo-medular y reducción a través de abordaje miniopen. Se registró el mecanismo del accidente y presencia de lesiones asociadas. En todos los casos se contó con radiografías preoperatorias y tomografía axial computada (TAC). Se clasificaron de acuerdo a la AO. Se registró en número de fragmentos que presentaba la fractura. Se tomaron radiografías de control en forma mensual hasta la consolidación. Se midió el ángulo cervico-diafisiario operado y contralateral. RESULTADOS: Todos los casos fueron secundarios a un accidente de alta energía. Veintidós pacientes presentaron lesiones asociadas. El número de fragmentos promedio fue de 3. La diferencia entre el ángulo cervico-diafisiario post operatorio de la cadera fracturada versus la cadera contralateral fue de 4,9 grados. Un paciente presentó no-unión. El tiempo promedio hasta la consolidación radiográfica fue de 3,7 meses. CONCLUSIÓN: El uso de clavos cefalo-medulares asociado a reducción a través de miniopen en pacientes jóvenes con fractura de fémur proximal de alta energía, presenta buenos resultados radiológicos con bajo número de complicaciones.

OBJECTIVE: To evaluate radiologic results of patients with proximal femur fracture treated with cephalo-medullary nails and open reduction through mini-open approach. MATERIALS AND METHODS: A retrospective-descriptive study of 45 patient consecutive series (38 male, 7 female. Mean age 52 years old) with high energy hip fracture treated with cephalo-medullary nails and open reduction through mini-open approach. Accident mechanism and associated lesions were documented. Every case was evaluated with pre-operative radiography and CT-scan. Fractures were classified according to AO classification. Patients were radiographically controlled monthly until bone healing. Cervical-diaphysial angle was measured and compared bilaterally. RESULTS: Every case was secondary to high energy trauma. 22 patients presented associated lesions. The mean number of bone fragments was 3. The difference between postoperative cervical-diaphysial angle versus contralateral hip was 4.9°. Only 1 patient presented non-union. The mean time until consolidation confirmed with radiography was 3.7 months. CONCLUSION: The use of cephalo-medullary nails associated to open reduction through a mini-open approach in young patients with high energy associated proximal femur fractures, presents satisfactory radiologic results with a low amount of complications.

Perioperative complications and mortality in elderly patients following surgery for femoral fracture: prospective observational study / Complicações perioperatórias e mortalidade em pacientes idosos submetidos a cirurgia para correção de fratura de fêmur: estudo prospectivo observacional

Abstract Background and objectives: Perioperative management of femoral fractures in elderly patients has been studied to determine modifiable causes of complications and death. The aim of this study was to evaluate the mortality rate and its causes in the elderly population with FF. We also evaluated perioperative complications and their association with postoperative mortality. Method: In this prospective and observational study, we evaluated 182 patients, by questionnaire and electronic medical record, from the moment of hospitalization to one year after surgery. Statistical analyzes using the multivariate Cox proportional hazards model and Kaplan-Meier curves were performed to detect independent mortality factors. Results: Fifty-six patients (30.8%) died within one year after surgery, and the main cause of death was infection followed by septic shock. The main complication, both preoperatively and postoperatively, was hydroelectrolytic disorder. For every one-unit (one-year) increase in age, the odds ratio for death increased by 4%. With each new preoperative complication, the odds ratio for death increased by 28%. Patients ASA III or IV had a 95% higher odds ratio for death than patients ASA I or II. Conclusions: Increasing age and number of preoperative complications, in addition to ASA classification III or IV, were independent factors of increased risk of death in the population studied. The mortality rate was 30.8%, and infection followed by septic shock was the leading cause of death.

Resumo Justificativa e objetivos: O manejo perioperatório das fraturas de fêmur em pacientes idosos tem sido estudado com o intuito de determinar causas modificáveis de complicações e óbito. Este estudo tem por objetivo avaliar taxa de mortalidade e suas causas na população idosa com fraturas de fêmur. Avaliamos também complicações perioperatórias e sua associação com mortalidade pós-operatória. Método: Neste estudo prospectivo e observacional, avaliamos 182 pacientes, por questionário e prontuário eletrônico, desde o momento da internação até um ano após a cirurgia. Análises estatísticas pelo modelo multivariado de riscos proporcionais de Cox e curvas de Kaplan-Meier foram feitas para detectar fatores independentes de mortalidade. Resultados: Cinquenta e seis pacientes (30,8%) obituaram em até um ano de pós-operatório, sendo que a principal causa determinada de óbito foi infecção seguida de choque séptico. A principal complicação, tanto pré quanto pós-operatória, foi distúrbio hidroeletrolítico. Para cada aumento de uma unidade (em ano) na idade, a razão de chance de vir a óbito aumentou em 4%. A cada nova complicação pré-operatória apresentada, a razão de chance de óbito aumentou em 28%. Os pacientes ASA III ou IV apresentaram razão de chance de óbito, em um ano, 95% maior do que aqueles ASA I ou II. Conclusões: O aumento da idade e do número de complicações pré-operatórias, além da classificação de ASA III ou IV, foram fatores independentes de risco aumentado de óbito na população estudada. A taxa de mortalidade foi de 30,8%, sendo que a infecção seguida de choque séptico foi a principal causa determinada de óbito.

The Relationship between the Lee Score and Postoperative Mortality in Patients with Proximal Femur Fractures / A relação do escore de Lee com a mortalidade pós-operatória em pacientes com fraturas de fêmur proximal

Abstract Objective To verify the predictive value of the Lee score for mortality in a one-year period after proximal femur fracture surgery. The present study also evaluated the isolated predictive capacity of other variables. Methods A sample of 422 patients with surgically-treated proximal femur fractures was evaluated. Data was collected through a review of medical records, appointments, and contact by telephone. Results The Lee score was applied to 99.3% of the patients with proximal femur fractures submitted to surgical treatment. Themortality rate was of 22% of the sample, and the majority were classified as class I risk. The Lee score had no significant association with mortality (p = 0.515). High levels of serum creatinine (p = 0.001) and age (p = 0.000) were directly associated with death. Conclusion The Lee score was not predictive of mortality in a one-year period after proximal femur fracture surgery; however, a statistical significance was observed between age and serum creatinine levels, considered separately, and death.

Resumo Objetivo Verificar o valor preditivo do escore de Lee para a mortalidade no primeiro ano pós operatório de fraturas de fêmur proximal. O estudo também avaliou a capacidade preditiva isolada de outras variáveis. Método Uma amostra de 422 pacientes com fraturas do fêmur proximal submetidos a cirurgia foi avaliada neste estudo. Os dados foram coletados por meio de revisão de prontuários, consultas presenciais e contatos telefônicos. Resultados O escore de Lee foi aplicado em 99,3% dos pacientes com fraturas de fêmur proximal submetidos a tratamento cirúrgico. A taxa de mortalidade da amostra foi de 22%, a maioria classificada como classe I de risco. O escore de Lee não apresentou associação significativa com a mortalidade (p = 0,515). Os valores elevados de creatinina sérica (p = 0,001) e a idade (p = 0,000) estiveram diretamente associados com o desfecho de morte. Conclusões O escore de Lee não é preditivo para amortalidade emumperíodo de um ano após cirurgia de fraturas de fêmur proximal; entretanto, observou-se significância estatística entre a idade e a dosagem sérica da creatinina, isoladamente, com o desfecho de morte.

Fatores relacionados ao delirium e à mortalidade em idosos vítimas de fratura de fêmur em uma enfermaria de ortopedia / Factors related to delirium and mortality in older adults with femur fracture on an orthopedic unit

OBJETIVO: Correlacionar as principais características clínicas do idoso internado por fratura de fêmur com a incidência de delirium e mortalidade durante a internação. MÉTODOS: Estudo transversal em pacientes com idade acima de 65 anos internados em enfermaria de ortopedia com fratura de fêmur. Foi aplicada aos pacientes e/ou cuidadores uma entrevista elaborada pelos autores para levantamento de suas características clínicas, sendo posteriormente realizada a correlação entre o perfil e a taxa de delirium e mortalidade. Para análise estatística, foi usado o programa Statistical Package for the Social Sciences (SPSS), o teste t de Student e o teste do χ2. Foi considerado estatisticamente significativo o valor p < 0,05. RESULTADOS: Noventa pacientes com média de idade de 83 anos (65­99), sendo 77,8% mulheres. O tempo médio de internação foi de 19,7 dias, sendo identificado delirium em 39,9% dos pacientes, e a taxa de mortalidade foi de 17,8%. O delirium esteve significativamente associado à idade avançada (p = 0,046), ao uso de psicotrópicos ­ especialmente a quetiapina ­ , à maior taxa de mortalidade, ao diabetes mellitus, à síndrome demencial e à baixa funcionalidade. Mortalidade, por sua vez, apresentou associação com insuficiência renal crônica, menor funcionalidade e síndrome demencial. CONCLUSÃO: Encontramos que o delirium esteve associado a idades mais elevadas, à menor funcionalidade, ao diabetes mellitus, à síndrome demencial, ao maior desfecho de óbitos e ao uso de psicotrópicos; e a mortalidade, à síndrome demencial, à insuficiência renal crônica e à pior funcionalidade.

OBJECTIVE: To correlate the main clinical characteristics of geriatric patients hospitalized for femur fracture with delirium incidence and mortality during hospitalization. METHODS: Cross-sectional study in patients over 65 years old admitted to an orthopedics unit with femoral fracture. The authors interviewed patients and / or caregivers to investigate their clinical characteristics, and subsequently correlate their profiles to the rates of delirium and mortality. Statistical analysis was performed using the Statistical Package for Social Sciences (SPSS), Student's t-test and χ2 test. Significance was established at p < 0.05. RESULTS: Participants included 90 patients with a mean age of 83 years (65­99), 77.8% women. The mean length of stay was 19.7 days, with delirium identified in 39.9% of patients, and a mortality rate of 17.8%. Delirium was significantly associated with advanced age (p = 0.046), use of psychotropic drugs ­ especially quetiapine ­ , higher mortality rate, diabetes mellitus, dementia syndrome, and low functionality. Mortality, in turn, was associated with chronic kidney disease, lower functionality, and dementia syndrome. CONCLUSION: We found that delirium was associated with advanced age, lower functionality, diabetes mellitus, dementia syndrome, higher death outcomes, and the use of psychotropic drugs; and mortality was associated to dementia syndrome, chronic kidney disease, and worse functionality. KEYWORDS: geriatrics; femoral fractures; delirium; mortality.