Angle Evaluation of Possible Routes that Can Be Used to Reach the Foramen Ovale in the Anterior Approach / Evaluación Angular de Posibles Rutas que se Pueden Utilizar para Alcanzar el Foramen Oval en el Abordaje Anterior

SUMMARY: For the treatment of trigeminal neuralgia, the foramen ovale is reached by entering the cheek with a needle. Thermocoagulation is performed with balloon compression, administration of alcohol or radiofrequency. Apart from the classical method, it is theoretically possible to reach the foramen ovale through the mouth with the anterior approach. In our study, it was aimed to examine horizontally and vertically the angular values that must be given to the needle to reach the foramen ovale in the anterior approach. Three landmark points were determined on both right and left sides of 25 dry skulls. A rod was inserted starting from these landmark points and passing through the center of the foramen ovale. The vertical and horizontal angular values of this bar were measured. For each foramen ovale, 3 vertical angles, 3 horizontal angles and 4 distance measurements were made. There was a significant difference between the right and left sides in terms of horizontal angular values. Average values of horizontal angles (in degrees); on the right, 7.29 for H1, 12.15 for H2, 32.29 for H3; 1.26 for H1, 9.46 for H2, and 30.56 for H3 on the left side (p<0.005). The angle value was measured as 0 or negative value in 5 (20 %) of the H1 angle measurements made on the right side and 14 (56 %) on the left side. The H2 angle value was found to be smaller than the H1 angle in the skull 2 (8 %) on the right and 3 (12 %) on the left. There was no difference between the right and left sides in terms of vertical angular values. A significant difference was found between the right and left sides in the D1, D2, D4 distances (p<0.005). Six important anatomical features affecting angular values were encountered.

Para el tratamiento de la neuralgia del trigémino, se alcanza el foramen oval introduciendo una aguja en la mejilla. La termocoagulación se realiza con compresión con balón, administración de alcohol o radiofrecuencia. Aparte del método clásico, en teoría es posible alcanzar el foramen oval a través de la cavidad oral mediante el abordaje anterior. En nuestro estudio se tuvo como objetivo examinar horizontal y verticalmente los valores angulares que se deben dar a la aguja para alcanzar el foramen oval en el abordaje anterior. Se determinaron tres puntos de referencia en los lados derecho e izquierdo de 25 cráneos secos. Se insertó una varilla comenzando desde estos puntos de referencia y pasando por el centro del foramen oval. Se midieron los valores angulares verticales y horizontales de esta barra. Para cada foramen oval se realizaron mediciones de 3 ángulos verticales, 3 ángulos horizontales y 4 distancias. Hubo una diferencia significativa entre los lados derecho e izquierdo en términos de valores angulares horizontales. Valores medios de ángulos horizontales (en grados); a la derecha, 7,29 para H1, 12,15 para H2, 32,29 para H3; 1,26 para H1, 9,46 para H2 y 30,56 para H3 en el lado izquierdo (p<0,005). El valor del ángulo se midió como 0 o valor negativo en 5 (20 %) de las mediciones del ángulo H1 realizadas en el lado derecho y 14 (56 %) en el lado izquierdo. Se encontró que el valor del ángulo H2 era menor que el ángulo H1 en el cráneo 2 (8 %) a la derecha y 3 (12 %) a la izquierda. No hubo diferencia entre los lados derecho e izquierdo en términos de valores angulares verticales. Se encontró diferencia significativa entre el lado derecho e izquierdo en las distancias D1, D2, D4 (p<0,005). Se encontraron seis características anatómicas importantes que afectan los valores angulares.

CyberKnife Radiosurgery for refractory bilateral trigeminal neuralgia. Case report

Case description: A case of a 37-year-old female patient suffering from refractory bilateral trigeminal neuralgia is presented, who underwent various interventions such as acupuncture, block therapies and even microvascular decompression without effective pain relief. Clinical findings: Paresthesias and shooting-like twinges of pain intensity 10/10 in bilateral maxillary and mandibular branches of the trigeminal nerve, with nasal and intraoral triggers that made eating impossible, becoming increasingly severe since refractoriness to microvascular decompression and carbamazepines, triggering the twinges even during sleep, generating somnolence, depressive mood and social isolation. Treatment and results: The patient was evaluated by an interdisciplinary neuro-oncology team, where, in accordance with the analysis of the brain magnetic resonance imaging and the patient's history, it was indicated to perform Cyberknife® radiosurgery in monofraction on the left trigeminal and subsequently treat the contralateral trigeminal. When treated with Cyberknife® radiosurgery, the patient reported absolute improvement in her pain for 2 years. Clinical relevance: Radiosurgery by CyberKnife is not yet the first line of management in trigeminal neuralgia, however, it should be considered since several studies have managed to demonstrate an increase in the quality of life of patients and pain relief in refractory or severe cases. of said pathology.

Descripción del caso: Se presenta un caso de paciente femenino de 37 años que padecía neuralgia del trigémino bilateral refractaria, tratada con terapias alternativas, cirugía de descompresión microvascular, analgesia multimodal y terapias de bloqueo sin alivio efectivo del dolor. Hallazgos clínicos: Parestesias y punzadas tipo disparo de intensidad del dolor 10/10 en ramas maxilar y mandibular bilaterales del nervio trigémino, con gatillos nasales e intraorales que imposibilitaban comer, tornándose cada vez más severa desde refractariedad a descompresión microvascular y carbamazepinas, desencadenándose las punzadas incluso en el sueño, provocando somnolencia, animo depresivo y aislamiento social. Tratamiento y resultados: La paciente fue sometida a valoración por equipo interdisciplinario de neurooncología, donde en concordancia con el análisis de la resonancia magnética cerebral y los antecedentes de la paciente, se indicó realización de radiocirugía por Cyberknife en monofracción sobre trigémino izquierdo y posteriormente tratar el contralateral. Al ser tratada con radiocirugía Cyberknife® la paciente refiere mejora absoluta de su dolor desde hace 2 años. Relevancia clínica: La Radiocirugía por Cyberknife aún no es primera línea de manejo en neuralgia del trigémino, sin embargo, debería considerarse ya que diversos estudios han logrado demostrar un aumento en la calidad de vida de los pacientes y alivio del dolor en casos refractarios o graves de dicha patología.

Surgical Treatment for Spasticity: Selective Dorsal Rhizotomy ­ Technique and Literature Review

Spasticity is amotor disorder that leads to a resistance to passive jointmovement. Cerebral palsy is the most important cause of spasticity and can be caused by several factors, including multiple gestations, alcoholism, infections, hemorrhages, drowning, and traumatic brain injuries, among others. There aremany scales that help tomeasure andmonitor the degree of impairment of these patients. The initial treatment should focus on the causal factor, such as tumors, inflammation, degenerative diseases, hydrocephalus, etc. Subsequently, the treatment of spastic musculature includes oral or intrathecal myorelaxants, spinal cord electrostimulation, neurotomies, Lissauer tract lesion, dentatotomy and selective dorsal rhizotomy. The latter is a safetechnique, possibleto beperformed inmost centers with neurosurgical support, and it is effective in the treatment of severe spasticity. In this article, the authors describe the surgical technique and conduct a review the literature.

Analysis of Three-Dimensional Gait Characteristics before and after FSPR Surgery of Patients with Spastic Cerebral Palsy / 医用生物力学

Objective To analyze gait characteristics of patients with spastic cerebral palsy (CP) before and after functional selective posterior rhizotomy (FSPR) surgery, so as to evaluate curative effects of the surgery objective ly. MethodsFifteen patients with spastic CP to be treated by FSPR were selected. The VICON three-dimensional (3D) motion analysis system and AMTI 3D force plates were used to collect and analyze the spatiotemporal gait parameters, kinematic and dynamic parameters before and after FSPR surgery. Results After the surgery, the left and right support phases were longer,and the left-side step length was significantly larger. The step height, velocity and the max displacement of center of gravity (COG) in coronal plane were smaller than those before surgery.The sagittal plane angle (flexion and extension angle) of the knee during initial landing was significantly increased, while no significant differences were found in that of the hip and ankle.The range of motion (ROM) of the left/right hip, knee and ankle in sagittal plane was increased to some extent during walking, with statistical differences. The ROM of right ankle in coronal plane was also increased obviously. The minimum flexion angle of the right knee and the maximum plantar flexion angle of the left/right ankle were significantly reduced. The maximum vertical forces of left and right support phases were significantly increased, while no significant differences were found in torque of lower limbs. Conclusions The 3D gait analysis can be used to evaluate the effect of FSPR on patients with spastic CP. The spasticity of patients with spastic CP is relieved after FSPR surgery, and the spatiotemporal gait parameters and kinematics parameters are improved significantly. But the improvement of dynamic parameters was not obvious, and further rehabilitation treatment is needed.

Termocoagulación por radiofrecuencia de ganglio de Gasser para el tratamiento de neuralgia trigeminal, resultados de 11 años / Gasser's ganglion radiofrequency thermocoagulation for the treatment of trigeminal neuralgia, 11-year results

Objetivos: Describir resultados de los últimos 11 años en el tratamiento de neuralgia del trigémino con termocoagulación por radiofrecuencia, analizar variables relacionadas a complicaciones y resultados. Material y Métodos: Estudio retrospectivo, descriptivo, longitudinal, comparativo y analítico. Se analizaron los resultados de los últimos 11 años de nuestro servicio evaluando las temperaturas de las lesiones armando dos grupos, de 65°C-70°C y 71°C-75°C para analizar su relación con resultados y complicaciones. Resultados: Se trataron 59 pacientes en los cuales se realizaron 74 procedimientos, la edad media fue 59.22 años (±13,45). Se observó recidiva en 23 procedimientos con una tasa global de 31%. El tiempo medio de recidiva fue de 28,19 meses (±26,21). El tiempo medio de seguimiento fue de 33,10 meses (±33,49). El tiempo medio de evolución del dolor, previo al primer procedimiento, fue de 5,35 años (±4,37). Analizando los grupos se observó que no existía relación significativamente estadística (p = 0,74) entre el grupo de pacientes de 65ºC-70ºC y el grupo de 71ºC-75ºC y recidiva. No se observó relación estadísticamente significativa entre el grupo de 65ºC-70ºC y el grupo de 71ºC-75ºC y tiempo de recidiva (p=0,12). Se observó más pacientes con hipoestesia inmediata en el grupo de pacientes de 65ºC-70ºC, sin significación estadística (p=0,47). Conclusión: La termocoagulación por radiofrecuencia de ganglio de Gasser es un procedimiento accesible, mínimamente invasivo que demostró buenos resultados y buen manejo del dolor con bajo índice de complicaciones.

Objectives: Describe results of the last 11 years in the treatment of trigeminal neuralgia with radiofrequency thermocoagulation, analyze variables related to complications and results. Methods: Retrospective, descriptive, longitudinal, comparative and analytical study. The results of the last 11 years of our service were analyzed by assessing the temperatures of the lesions by assembling two groups, 65° C-70° C and 71 ° C-75° C to analyze their relationship with results and complications. Results: 59 patients were treated in which 74 procedures were performed; the mean age was 59.22 years (± 13.45). Recurrence was observed in 23 procedures with an overall rate of 31%. The average recurrence time was 28.19 months (± 26.21). The average follow-up time was 33.10 months (± 33.49). The average time of pain evolution, prior to the first procedure, was 5.35 years (± 4.37). Analyzing the groups, it was observed that there was no significant statistical relationship (p = 0.74) between the group of patients from 65ºC-70ºC and the group from 71ºC-75ºC and recurrence. No statistically significant relationship was observed between the 65ºC-70ºC group and the 71ºC-75ºC group and recurrence time (p = 0.12). More patients with immediate hypoaesthesia were observed in the group of patients from 65ºC-70ºC, without statistical significance (p = 0.47). Conclusion: Gasser's ganglion radiofrequency thermocoagulation is an accessible, minimally invasive procedure that demonstrated good results and good pain management with a low complication rate

Advances on selective posterior rhizotomy for lower limb function in patients with cerebral palsy / 中国骨伤

Cerebral palsy is a common clinical syndrome of neurological disability in childhood, which seriously affects the quality of life of children and their families, and brings a heavy economic burden to the society. Domestic and foreign scholars had a long history of the application of selective posterior rhizotomy for the treatment of spastic cerebral palsy or mixed cerebral palsy with limb paralysis. It is effective in improving the lower extremity spasm of patients with cerebral palsy, and there are few cases with recurrences. After rehabilitation therapy, the muscle strength of patients with cerebral palsy was significantly improved compared with the previous one. The range of motion was significantly improved after operation, and there is no rebounded in aspect of joint activety in the long-term follow-up. The overall gait of the patient was significant improved. The author thought that selective posterior rhizotomy is effective in improving the motor function of lower limbs in patients with cerebral palsy, and it is worth being spread. However, it has to follow the principle of selecting appropriate cases before surgery, precise operation during operation, and timely and effective rehabilitation treatment after surgery, in order to achieve a better curative effect.

Critérios de elegibilidade e efeitos da rizotomia dorsal seletiva sobre a função motora e marcha de crianças e adolescentes com paralisia cerebral: revisão sistemática / Eligibility criteria and effects of selective dorsal rhizotomy on the motor function and gait of children and adolescents with cerebral palsy: a systematic review

INTRODUÇÃO: A espasticidade pode ser considerada como uma das mais impactantes alterações secundárias à paralisia cerebral. Nos últimos anos, a Rizotomia Dorsal Seletiva (RDS) tem sido destacada como um procedimento cirúrgico eficaz para o tratamento da espasticidade dos membros inferiores de crianças com paralisia cerebral. OBJETIVOS: Verificar por meio de uma revisão sistemática da literatura os efeitos em médio e longo prazo, da RDS sobre a função motora grossa e a marcha em crianças e adolescentes com paralisia cerebral. Além de averiguar se existe um consenso na literatura sobre os critérios de indicação da RDS. MÉTODOS: Uma pesquisa foi realizada na rede internacional nos bancos de dados de acordo com os seguintes critérios de inclusão: (1) desenho: estudos envolvendo o acompanhamento pós-operatório longitudinal; (2) população: crianças e adolescentes com paralisia cerebral espástica; (3) intervenção: RDS; (4) grupo controle com intervenção diferente ou sem intervenção; (5) desfecho: melhora da função motora, melhora da espasticidade e desempenho da marcha. RESULTADOS: Foi encontrado um total de seis artigos que preencheram os critérios de inclusão e foram utilizados nesta revisão. Nos estudos analisados, foram observadas melhoras significativas na variável cinemática da marcha com diminuição da espasticidade no grupo RDS. CONCLUSÃO: A RDS diminui a espasticidade com efeitos positivos sobre a função motora grossa e a marcha de crianças e adolescentes com paralisia cerebral, porém estudos adicionais são necessários para esclarecer a eficácia da RDS aplicada em grupos musculares de membros inferiores.

INTRODUCTION: Spasticity can be considered one of the most striking alterations secondary to cerebral palsy. In recent years, Selective Dorsal Rhizotomy (SDR) has been highlighted as an effective surgical procedure for the treatment of lower limb spasticity in children with cerebral palsy. OBJECTIVES: To verify through a systematic review of the literature the medium and long-term effects of SDR on gross motor function and gait in children and adolescents with cerebral palsy. Secondarily, to verify if there is a consensus in the literature on the criteria to indicate SDR. METHODS: A search was performed in the international network databases according to the following inclusion criteria: (1) design: studies involving longitudinal postoperative follow-up; (2) population: children and adolescents with spastic cerebral palsy; (3) intervention: SDR; (4) control group with different intervention or without intervention; (5) outcome: improvement of motor function, improvement of spasticity and gait performance. RESULTS: A total of six articles were found that met the inclusion criteria and were used in this review. In the studies analyzed, significant improvements were observed in the kinematic gait variable with decreased spasticity in the SDR group. CONCLUSION: SDR decreases spasticity with positive effects on gross motor function and gait of children and adolescents with cerebral palsy, but additional studies are needed to elucidate the efficacy of RDS applied to lower limb muscle groups.

Indications of the Neurotomy of Genicular Nerves by Radiofrequency for the Treatment of Knee Osteoarthritis: A Literature Review / Indicações da neurotomia dos nervos geniculares por radiofrequência para o tratamento da osteoartrite do joelho: uma revisão de literatura

Abstract Osteoarthritis (OA) is one of the most frequent and incapacitating pathologies today, especially of the knee. Among the possible approaches for knee OA, the neurotomy of the genicular nerves by radiofrequency (RF) has been gaining prominence. However, as this is a relatively new procedure, indications for its implementation are still unclear. The objective of the present reviewis to identify the main indications of the use of RF for the treatment of knee OA in themedical literature. A review of the literature was performed in January 2018 through a search in the PubMed, ClinicalKey and Google Scholar databases. After reviewing themain articles on the subject, it was concluded that the main indications of the use of RF for the treatment of kneeOAwere:OA Kellgren-Lawrence grades 3 and 4, withmoderate to severe pain and failure of conservative treatment, mainly in elderly people; persistence of pain even after total knee arthroplasty (TKA); patients with an indication for TKAwho refuse to undergo surgical treatment.

Resumo A osteoartrite é uma das patologias mais frequentes e incapacitantes na atualidade, principalmente do joelho. Dentre as abordagens possíveis para osteoartrite, a neurotomia dos nervos geniculares por radiofrequência vem se destacando. Todavia, por se tratar de um procedimento relativamente novo, as indicações para realização ainda não estão bem definidas. O principal objetivo desta revisão foi identificar as principais indicações do uso da radiofrequência para o tratamento da osteoartrite do joelho na literatura médica. Foi realizada revisão da literatura em janeiro de 2018, através de pesquisa nas bases de dados PubMed, Clinicalkey e Google Scholar. Após revisão dos principais artigos no assunto, foi concluído que as principais indicações do uso da radiofrequência para o tratamento da osteoartrite do joelho foram: pacientes com osteoartrite grau 3 e 4 da classificação de Kellgren-Lawrence, com dor de moderada a severa e falha do tratamento conservador, principalmente idosos; persistência da dor, mesmo após realizado artroplastia total de joelho; pacientes com indicação de artroplastia total de joelho e que se recusam a submeter-se ao tratamento cirúrgico.

Clinical observation of selective posterior rhizotomy for improving spasticity and gross movement in patients with cerebral palsy / 中国骨伤

OBJECTIVE@#To explore the effect of selective lumbosacral posterior rhizotomy(SPR) on lower limb spasticity and gross motor function in patients with cerebral palsy.@*METHODS@#From January 2018 to October 2018, 47 patients with cerebral palsy were treated with rehabilitation alone and SPR combined with rehabilitation. According to whether SPR was performed, the patients were divided into group A and group B. Group A was treated with rehabilitation combined with SPR at lumbosacral level, and group B was treated with rehabilitation alone. There were 23 cases in group A, including 15 males and 8 females, with an average age of (7.30±3.25) years old; 24 cases in group B, 13 males and 11 females, with an average age of (7.00±3.09) years old. Forty-seven patients were assessed with modified Ashworth(MAS) and Gross Motor Function Scale(GMFM-88 items) before and after treatment. The changes of MAS and GMFM-88 scores before and after treatment were compared to evaluate the degree of spasm and the improvement of gross motor function in the two groups.@*RESULTS@#All 47 patients were followed up. At 6 months after treatment, the MAS classification of the two groups was significantly improved(<0.05), and the improvement of group A was more obvious than that of group B(<0.05). Six months after treatment, the D, E and total scores of GMFM-88 between two groups were significantly improved compared with those before operation(<0.05). The improvement of D and total scores in group A was more obvious than that in group B. There was no significant difference in the improvement of area E between two groups.@*CONCLUSIONS@#Selective posterior rhizotomy combined with rehabilitation can significantly improve the spastic state and gross motor function of lower limbs in children with cerebral palsy, and can effectively promote the reconstruction and recovery of motor function of lower limbs in children with cerebral palsy.

Rizotomia dorsal seletiva na paralisia cerebral: critérios de indicação e protocolos de reabilitação fisioterapêutica pós-operatória / Selective dorsal rhizotomy in cerebral palsy: selection criteria and postoperative physical therapy protocols

RESUMO Objetivo: Identificar critérios de seleção para a rizotomia dorsal seletiva (RDS) na paralisia cerebral (PC), analisar os instrumentos de avaliação e descrever as características da fisioterapia nos protocolos pós-operatórios. Fontes de dados: Revisão do tipo integrativa nas bases de dados SciELO, PEDro, Cochrane Library e PubMed. Os termos em português e inglês "paralisia cerebral", "rizotomia dorsal seletiva" e "fisioterapia" foram utilizados na busca. Os critérios de inclusão foram: artigos que arrolaram indivíduos com PC, que realizaram fisioterapia nos protocolos de RDS e que descreviam características desses protocolos. Foram excluídos artigos de revisão da literatura e não houve restrição de período de publicação. Síntese dos dados: Incluíram-se 18 estudos, sendo a maioria coortes prospectivas, com acompanhamento dos pacientes de oito meses a dez anos. Os instrumentos das avaliações contemplam, na maior parte dos trabalhos, os domínios de funções e estruturas corporais e atividade. O percentual de secção das raízes posteriores foi próximo a 50%. A principal indicação para a RDS incluiu deambuladores com diplegia espástica, que preenchiam os seguintes critérios: espasticidade que interfere com a mobilidade, boa força muscular de membros inferiores e tronco, sem deformidades ortopédicas, distonia, ataxia ou atetose e boa função cognitiva. A fisioterapia é parte integrante dos protocolos de tratamento com RDS, devendo ser intensiva, específica e enfatizada principalmente no primeiro ano. Conclusões: Os estudos salientam a importância da seleção adequada dos pacientes para o sucesso dos resultados. A fisioterapia é intensiva e de longa duração, devendo necessariamente ter estratégias para modificar o antigo padrão motor.

ABSTRACT Objective: To identify selection criteria for selective dorsal rhizotomy (SDR) in cerebral palsy, to analyze the instruments used for evaluation, and to describe the characteristics of physical therapy in postoperative protocols. Data sources: Integrative review performed in the following databases: SciELO, PEDro, Cochrane Library, and PubMed. The terms in both Portuguese and English for "cerebral palsy", "selective dorsal rhizotomy", and "physical therapy" were used in the search. Studies whose samples enrolled individuals with cerebral palsy who had attended physical therapy sessions for selective dorsal rhizotomy according to protocols and describing such protocols' characteristics were included. Literature reviews were excluded and there was no restriction as to period of publication. Data synthesis: Eighteen papers were selected, most of them being prospective cohort studies with eight-month to ten-year follow-ups. In most studies, the instruments of assessment encompassed the domains of functions, body structure, and activity. The percentage of posterior root sections was close to 50%. Primary indications for SDR included ambulatory spastic diplegia, presence of spasticity that interfered with mobility, good strength of lower limbs and trunk muscles, no musculoskeletal deformities, dystonia, ataxia or athetosis, and good cognitive function. Postoperative physical therapy is part of SDR treatment protocols and should be intensive and specific, being given special emphasis in the first year. Conclusions: The studies underline the importance of appropriate patient selection to obatin success in the SDR. Postoperative physical therapy should be intensive and long-term, and must necessarily include strategies to modify the patient's former motor pattern.

Resultados funcionales de corto plazo en rizotomía dorsal selectiva para el tratamiento de espasticidad en niños con parálisis cerebral / Short-term functional outcomes of selective dorsal rhizotomy for the treatment of spasticity in children with cerebral palsy

Introduction: selective dorsal rhizotomy (SDR) is a neurosurgical, non-reversible intervention to treat disabling spasticity in children with cerebral palsy (CP), improving their motor function and general performance. Objective: to assess functional outcomes of SDR in CP patients at Institutos teletón Chile, 6 and 12 months post-surgery. Patients and Method: Clinical records of all patients that underwent a SDR procedure between November 2010 and November 2013 were reviewed. Eighteen cases (spastic diplegia; age 7.5 +/- 2.9 years) were found, and their relevant pre-, peri- and post operative data after 6 and 12 months, were analyzed, as: clinical history, physical examination, evidence of preventricular leukomalacia (PVL), aspects related to surgery, and functional outcomes, including Gross Motor Function Measurement (GMFM)-66 and -88, Pediatric Evaluation Disability Inventory (PEDI) and gait lab (GL) using Gait Deviation Index (GDI). Results: Fifty percent of the subjects were classified as GMFCS II-III and the other 50 percent as GMFCS IV. A clinical important reduction in lower limb spasticity, particularly in triceps surae and hip flexors was observed in all patients, as well as improved muscular strength in many of them. GMFM-66 and GMFM-88 scores improved (p < 0.01). A trend towards improvement, without significant differences was observed in PEDI scores (GMFCS IV patients), and a significant improvement in GDI in ambulant patients (p < 0.015). Conclusions: SDR is a valid option to achieve long-lasting control of spasticity, 12 months after surgery, in children with spastic cerebral palsy, improving also functional capacity.

Introducción: la rizotomía dorsal selectiva (RDS) es una intervención neuro-quirúrgica irreversible para tratarla espasticidad discapacitante en niños con parálisis cerebral (PC). Su finalidad es mejorar la función motora y funcionalidad global de los pacientes. Objetivo: Evaluar los resultados funcionales de la RDS en los pacientes de Institutos teletón Chile con PC a los 6 y 12 meses postoperatorio. Pacientes y Método: Se revisan las fichas clínicas de los pacientes operados de RDS entre noviembre de 2010 y noviembre de 2013. Se encuentran 18 casos (diplejia espástica; edad 7,5 +/- 2,9 años), cuyos datos clínicos relevantes pre, peri y postoperatorios a 6 y 12 meses, fueron analizados: historia y examen físico; presencia de leucomalacia periventricular (LMPV); aspectos quirúrgicos y resultados funcionales de: Gross Motor Function Measurement (GMFM)-66 y 88, Pediatric Evaluation Disability Inventory (PEDI) y en laboratorio de marcha (LM), el Gait Deviation Index (GDI). Resultados: 50 por ciento correspondieron a pacientes GMFCS II-III y 50 por ciento a GMFCS IV. Se obtuvo importante reducción clínica de espasticidad de extremidades inferiores, especialmente plantiflexores de tobillo y flexores de cadera en todos los pacientes y en muchos un aumento de la fuerza muscular. Hubo mejoría en función motora gruesa evaluado con GMFM-66 (p < 0,001) y GMFM-88 (p < 0,001). tendencia a mejoría, sin diferencias significativas en PEDI (pacientes GMFCS IV) y mejoría significativa de GDI en pacientes ambulantes (p < 0,015). Conclusiones: La RDS es una opción válida para el control duradero de la espasticidad, a 12 meses, en niños con parálisis cerebral espástica, proporcionando además mejorías funcionales.

Cost-benefit analysis of different surgical methods in patients with trigeminal neuralgia / 重庆医学

Objective To analyze the cost-benefit ratio of primary trigeminal neuralgia patients with bad drug control and never accepted the surgical treatment through surgery [including microvascular decompression (MVD) ,percutaneous radiofrequency rhizotomy (RFR) ,stereotactic radiotherapy (SRS)] .Methods A total of 89 patients with primary trigeminal neuralgia who under-went surgical treatment for the first time from 2005 to 2013 were enrolled in this study ,including 27 patients with MVD ,23 patients with RFR and 39 patients with SRS .Evaluation criteria (effect factors) include facial pain (excellent :no pain and no drug treat-ment ;good :no pain but medication ;worse:less than 50% of patients with pain ;worse:more than 50% of patients with facial pain or need to undergo secondary surgery ) ,numbness ,cost and .Results The mean age of the patients treated with MVD was (50 .4 ± 14 .3)years old ,RFR was(73 .2 ± 13 .6) years old SRS was (72 .6 ± 11 .8) years old ,MVD group was younger than RFR and SRS group(P<0 .05);The average total cost of each surgical approach as follows :MVD was 50274 yuan ,RFR was 4539 yuan ,SRS was 38512 yuan (P<0 .05);The postoperative facial numbness proportion of MVD was 1 .1% ,RFR was 52 .2% and SRS was 28 .2% (P<0 .05);The ratio of patients who needed recurrent surgery in two years was MVD 26 .0% ,RFR 73 .9% and SRS 30 .7% (P<0 .05);The mean remission rate of MVD was 1 .6 years ,the RFR was 2 .1 years ,and the SRS was 1 .0 year(P<0 .05);The cost-benefit ratio of MVD was 31618 yuan ,RFR was 1982 yuan ,SRS was 39297 yuan(P<0 .05) .Conclusion The cost-ben-efit ratio of the three surgical from low to high were RFR ,MVD ,SRS ,which means the unit cost of RFR gain the highest ,followed by M VD and SRS .

Spinal deformities after selective dorsal rhizotomy / Deformidades da coluna vertebral após rizotomia dorsal seletiva / Deformidades espinales luego de rizotomía dorsal selectiva

ABSTRACT Objective: Selective dorsal rhizotomy (SDR) used for spasticity treatment could worsen or develop spinal deformities. Our goal is to describe spinal deformities seen in patients with cerebral palsy (CP) after being treated by SDR. Methods: Retrospective study of patients operated on (SDR) between January/1999 and June/2012. Inclusion criteria: spinal Rx before SDR surgery, spinography, and assessment at follow-up. We evaluated several factors emphasizing level and type of SDR approach, spinal deformity and its treatment, final Risser, and follow-up duration. Results: We found 7 patients (6 males): mean age at SDR 7.56 years (4.08-11.16). Mean follow-up: 6.64 years (2.16-13), final age: 14.32 years (7.5-19). No patient had previous deformity. GMFCS: 2 patients level IV, 2 level III, 3 level II. Initial walking status: 2 community walkers, 2 household walkers, 2 functional walkers, 1 not ambulant, at the follow-up, 3 patients improved, and 4 kept their status. We found 4 TL/L laminotomies, 2 L/LS laminectomies, and 1 thoracic laminectomy. Six spinal deformities were observed: 2 sagittal, 3 mixed, and 1 scoliosis. There was no association among the type of deformity, final gait status, topographic type, GMFCS, age, or SDR approach. Three patients had surgery indication for spinal deformity at skeletal maturity, while those patients with smaller deformities were still immature (Risser 0 to 2/3) although with progressive curves. Conclusions: After SDR, patients should be periodically evaluated until they reach Risser 5. The development of a deformity does not compromise functional results but adds morbidity because it may require surgical treatment.

RESUMO Objetivo: A rizotomia dorsal seletiva (SDR) para tratamento da espasticidade pode piorar ou desenvolver deformidades da coluna vertebral. Nosso objetivo é descrever as deformidades da coluna observadas em pacientes com paralisia cerebral (PC) depois de serem submetidos à SDR. Métodos: Avaliação retrospectiva de pacientes operados (SDR), entre janeiro/1999 e junho/2012. Critérios de inclusão: Radiografias vertebrais prévias, espinografia e avaliação no acompanhamento. Foram avaliados vários fatores com ênfase no nível e tipo de abordagem da SDR, deformidade da coluna vertebral e seu tratamento, Risser final e tempo de acompanhamento. Resultados: Encontramos 7 pacientes (6 do sexo masculino): média de idade à SDR 7,56 anos (4,08-11,16). Acompanhamento médio: 6,64 anos (2,16-13); idade final: 14,32 anos (7,5-19). Nenhum paciente tinha deformidade anterior. GMFCS: 2 pacientes com nível IV, 2 com nível III, 3 com nível II. Estado deambulatório inicial: 2 deambuladores comunitários, 2 deambuladores domiciliares, 2 deambuladores funcionais, 1 Não deambulador; no acompanhamento, 3 melhoraram e 4 mantiveram seu estado. Foram encontradas 4 laminotomias TL/L, 2 laminectomias L/LS, 1 torácica. Foram detectadas 6 deformidades da coluna: 2 sagitais, 3 mistas e 1 escoliose. Não houve nenhuma associação entre o tipo de deformidade e o estado de deambulação final, tipo topográfico, GMFCS, idade nem abordagem da SDR. Três pacientes tinham indicação de cirurgia à maturidade esquelética, mas as deformidades menores eram ainda imaturas (Risser 0 a 2/3), apesar das curvas evolutivas. Conclusões: A coluna deve-se ser avaliada periodicamente depois da SDR até Risser 5. O desenvolvimento de uma deformidade não afeta o resultado funcional, mas sim acrescenta morbidade, pois pode exigir tratamento cirúrgico.

RESUMEN Objetivo: La rizotomía dorsal selectiva (SDR) para el tratamiento de la espasticidad podría empeorar o desarrollar deformidades espinales. Nuestro objetivo es describir deformidades espinales observadas en pacientes con parálisis cerebral (PC) luego de someterse a SDR. Métodos: Evaluación retrospectiva de pacientes operados (SDR) entre enero/1999 y junio/2012. Criterios de inclusión: Rx raquídeas previas, espinograma y evaluación al seguimiento. Se evaluaron diversos factores con énfasis en nivel y tipo de abordaje de SDR, deformidad espinal y su tratamiento, Risser final y tiempo de seguimiento. Resultados: Encontramos 7 pacientes (6 varones): edad promedio a la SDR 7,56 años (4,08 - 11,16). Seguimiento promedio: 6,64 años (2,16 - 13); edad final: 14,32 años (7,5 - 19). Ninguno tenía deformidad previa. GMFCS: 2 pacientes nivel IV, 2 nivel III, 3 nivel II. Estado ambulatorio inicial: 2 Deambuladores Comunitarios, 2 Domiciliarios, 2 Funcionales, 1 No Deambulador; al seguimiento 3 mejoraron y 4 lo mantuvieron. Hubo 4 laminotomías TL/L, 2 laminectomías L/LS y 1 torácica. Se detectaron 6 deformidades espinales: 2 sagitales, 3 mixtas y 1 escoliosis. No hubo asociación entre tipo de deformidad y estado ambulatorio final, tipo topográfico, GMFCS, edad ni abordaje para la SDR. Tres pacientes tuvieron indicación de cirugía; pero estos llegaron a la madurez esquelética, mientras que los de deformidades menores aún son inmaduros (Risser 0 a 2/3) aunque con curvas evolutivas. Conclusiones: Se debe evaluar periódicamente la columna después de SDR hasta Risser 5. La aparición de una deformidad no afecta el resultado funcional pero sí agrega morbilidad pues puede requerir tratamiento quirúrgico.

A Clinical Analysis of Secondary Surgery in Trigeminal Neuralgia Patients Who Failed Prior Treatment

OBJECTIVE: Although many treatment modalities have been introduced for trigeminal neuralgia (TN), the long-term clinical results remain unsatisfactory. It has been particularly challenging to determine an appropriate treatment strategy for patients who have responded poorly to initial therapies. We analyzed the surgical outcomes in TN patients who failed prior treatments. METHODS: We performed a retrospective analysis of 37 patients with recurrent or persistent TN symptoms who underwent surgery at our hospital between January 2010 and December 2014. Patients with follow-up data of at least one year were included. The prior treatment modalities of the 37 patients included microvascular decompression (MVD), gamma knife radiosurgery (GKRS), and percutaneous procedures such as radiofrequency rhizotomy (RFR), balloon compression, and glycerol rhizotomy (GR). The mean follow-up period was 69.9 months (range : 16–173). The mean interval between the prior treatment and second surgery was 26 months (range : 7–123). We evaluated the surgical outcomes using the Barrow Neurological Institute (BNI) pain intensity scale. RESULTS: Among the 37 recurrent or persistent TN patients, 22 underwent MVD with partial sensory rhizotomy (PSR), 8 received MVD alone, and 7 had PSR alone. Monitoring of the surgical treatment outcomes via the BNI pain intensity scale revealed 8 (21.6%) patients with a score of I, 13 (35.1%) scoring II, 13 (35.1%) scoring III, and 3 (8.2%) scoring IV at the end of the follow-up period. Overall, 91.8% of patients had good surgical outcomes. With regard to postoperative complications, 1 patient had transient cerebrospinal fluid rhinorrhea (2.7%), another had a subdural hematoma (2.7%), and facial sensory changes were noted in 8 (21.1%) patients after surgery. CONCLUSION: Surgical interventions, such as MVD and PSR, are safe and very effective treatment modalities in TN patients who failed initial or prior treatments. We presume that the combination of MVD with PSR enabled us to obtain good short- and long-term surgical outcomes. Therefore, aggressive surgical treatment should be considered in patients with recurrent TN despite failure of various treatment modalities.

Efficacy analysis of selective posterior rhizotomy at medullary conus for treatment of double lower extremities spastic cerebral palsy / 中华实用儿科临床杂志

Objective To investigate the clinical efficacy of L1 -S1 selective posterior rhizotomy (SPR)at the medullary conus level for the treatment of double lower extremities spastic cerebral palsy(CP).Methods A total of 1 09 double lower extremities spastic CP children underwent SPR at the level of medullary consul were selected in the Second Affiliated Hospital of Xinjiang Medical University from October 201 0 to May 201 4.The 4 groups were analyzed in terms of muscle tension and gross motor function of the lower limbs 6 months before and after operation,retrospective-ly.The SPSS 1 7.0 software was used for statistical analysis.Results Patients had different degrees of improvement in gross motor function and reduction of spasticity in all muscle groups of lower limbs after operation.Six months after the operation,the muscular tension of hip flexor,hip adductor,knee flexor and plantar flexors (modified Ashworth spastic scale score)were all improved compared with preoperation (t =1 6.635,27.41 1 ,31 .362,38.81 9,all P <0.01 ).Gross motor function of lower limbs (Gross Motor Function Measure)at 6 months after the operation was significantly im-proved compared with preoperation (51 .97 ±1 2.92 vs 41 .01 ±1 1 .46),and the difference was significant(t =26.67, P <0.01 ).The postoperative complications:intracranial hypotension headache (5 cases,4.59%),postoperative high fever (2 cases,1 .83%),incision fat liquefaction (2 cases,1 .83%),sensory barriers of lower limbs (1 case, 0.92%),and urine obstacles (1 case,0.92%).Conclusions SPR at the level of medullary conus has the advantages of minimal injury,rapid recovery and little influence on the stability of the spine.In addition,the procedure can relieve the spasticity of lower limbs of the CP patients effectively.

La Rizotomía Selectiva Posterior: Una alternativa en el tratamiento de la espasticidad en la Disfunción Cerebral Motora / Selective posterior rhizotomy: An alternate treatment for spasticity in cerebral motor dysfunction

La Rizotomía Selectiva Posterior (RSP) es un procedimiento quirúrgico que se realiza en las raíces posteriores (sensitivas) de la columna lumbosacra. Su fundamento se basa en disminuir la respuesta motora exagerada que producen los estímulos sensitivos en pacientes con espasticidad, como sucede en la Disfunción Motora de origen cerebral (DCM). En este trabajo se presenta una descripción de la técnica, indicación, selección de pacientes y aspectos pre y post operatorios.

Selective Dorsal Rhizotomy (SDR) is a surgical procedure performed on the posterior roots of the lumbosacral spine. It is based on the diminishment of the exaggerated motor response produced by sensitive stimuli in patients with spasticity, such as in the child with cerebral motor dysfunction (CMD). This paper presents a description of the technique, indications, patient selection and pre and post operative aspects.

Effect of dorsal rhizotomy on cartilage of degenerative changes in knee joint of rats / 中国比较医学杂志

Objective To investigate the changing characteristics and rules of the different period of articular cartilage in rats after dorsal rhizotomy, and to verify the partial sensory disturbance can cause articular cartilage injury. Methods Thirty-three ten-month-old SPF male Wistar rats were randomly divided into experimental group ( n=18 ) and control group ( n=15) .The rats in the experimental group were sectioned the L3、L4 dorsal roots in the right.The rats in the control group were only incised the skin and paravertebral muscles.To observe the behavior changes in rats.At 2, 6 and 10 weeks, the specimens of the right hind lower end of femur were drawn out to make paraffin sections, then HE staining and Safranin O/Fast Green staining.The changes and characteristics of the morphology of the articular cartilage was observed.Results With the prolonging of period, the right hind limb of the experimental rats through the change process of transient paralysis, coordination of movement disorders and active movement.In the experimental group, the patellar surface of right hind femur gradually became shallow and wide.The articular cartilage underwent rough, cells disorganizated, cells decreased, and duplicated drifted and interrupted tide line. The ratios of ACC/TAC of the experimental group were gradually high(t=5.25~8.13,P <0.05).Conclusion Dorsal rhizotomy can cause injury and degenerative changes in articular cartilage.

Complications of selective posterior rhizotomy for lower limb spasticity of cerebral palsy / 北京大学学报(医学版)

Objective:To investigate the complications of spastic cerebral palsy with selective posterior rhizotomy (SPR).Methods:In the study, 2 593 patients who had undergone SPR from January 2000 to September 2012 were followed-up for at least one year .The complications were classified .Results:Peri-operative complications:pulmonary system complications including bronchial spasm (5 cases, 0.19%) and aspiration pneumonia (4 cases, 0.15%);digestive system complications including abdominal bloa-ting (145 cases, 5.6%) and colic (80 cases, 3.1%);urinary system complications including tempora-ry bladder dysfunction (54 cases, 2.1%) and urinary tract infection (6 cases, 0.23%); peripheral nervous system complications including lower extremity weakness ( 327 cases, 12.6%) and lower extremity sensory disturbances ( 140 cases, 5.4%); central nervous system complications including headache (112 cases, 4.3%) and epileptic seizures (4 cases, 0.15%).None spinal or intracranial in-fection, intraspinal hematoma or intracranial hemorrhage were identified .General surgery complications including back pain (1 382 cases, 53.3%), delay wound healing caused by infection (5 cases, 0.19%) and cerebrospinal fluid leakage (8 cases, 0.31%).Long-term follow-up complications inclu-ding lower limb decreased exercise capacity ( incidence: 7.33%) and lower extremity sensory distur-bance (incidence:5.59%).Urination occurred in only one case and defecation function disturbance with no sexual dysfunction was identified .The incidences of scoliosis , thoracic kyphosis , spondylolisthe-sis and long-term back pain were 7.23%(31/429), 4.2%(18/429), 10.49%(45/429) and 9.72%respectively .Conclusion:SPR is one of the effective and safe surgical treatments for spastic cerebral pal-sy.Valid methods should be applied to reduce the incidence of postoperative complications , such as choosing the appropriate patients , meticulously operating in the surgery , assistance of electrophysiological guidance , reinforcing perioperative management and regular rehabilitation training after operation .

Rizotomia dorsal seletiva (RDS) para espasticidade: técnica minimamente invasiva no cone medular / Selective dorsal rhizotomy (SDR) for spasticity: minimally invasive technique at conus medullaris

A rizotomia dorsal seletiva é um procedimento cirúrgico bem aceito no manejo da espasticidade e tem como objetivo o alívio desse sintoma em pacientes cuidadosamente selecionados. Neste estudo, apresentamos o método que utilizamos em nosso serviço para indicação de pacientes, bem como a técnica cirúrgica e o método de monitorização neurofisiológica intraoperatória utilizado para otimizar os resultados. Realizamos também uma revisão bibliográfica utilizando os sites de busca da PubMed/MedLine e Lilacs, com artigos publicados entre os anos de 1965 e 2013. Os descritores utilizados foram: "rizotomia", "espasticidade", "paralisia cerebral" e "monitorização intraoperatória". Foram selecionados 17 artigos para este estudo.

Selective dorsal rhizotomy is a well-accepted cirurgic procedure utilized for relieving spasticity in carefully selected patients. In this work, we present the method we use to indicate the patients, the operative technique, and the intraoperative monitoring technique used in order to obtain the best results. We also reviewed the literature through the online databases PubMed/MedLine and Lilacs, with published papers from 1965 to 2013, descriptors included "rhizotomy", "spasticity", "cerebral palsy" and "intraoperative monitoring". We selected 17 articles for this study.

Clinic research into the effects of SPR on the sensory function of lower extremities / 中华显微外科杂志

Objective To explore the reason why the SPR could make the changes of Sensory Function of Lower extremities,and the clinical significance of these changes.Methods From February,2012 to August,2014,24 patients with spastic cerebral palsy who were consistent with the indications of SPR,had normal intelligence development,and express competence,and could cooperate with the test.To test the changes of Sensory Function of lower extremities preoperatively,1 week after SPR,such as haptics,superficial algaesthesis,temperature sensation,cinaesthesia,topesthesia,pallesthesia,deep pain sense,tactile localization sense,two point discrimination and pattern sense.Results There were 6 patients who present with skin paresthesia of lower extremities among the 24 patients after the SPR.Of the 6 patients,4 became normal 2 weeks later,1 became normal 3 weeks later,and the longest 1 became normal 6 weeks later.No instances with permanent sensory deprivation and anaesthesia were found.The proportions of the excised root of spinal nerves during the SPR in the groups with skin anaesthesia of lower extremities and without skin anaesthesia of lower extremities were 0.268 ± 0.049 and 0.193 ± 0.074 (P ＜ 0.05 respectively).The former was significantly higher than the latter.The changes of haptics,cinaesthesia,topesthesia,deep pain sense,tactile localization sense,two point discrimination,pallesthesia preoperatively,1 week after SPR were not significantly different (P ＞ 0.05).There were significant differences in the superficial algaesthesis,pattern sense and temperature sensation preoperatively and postoperatively (P ＜ 0.05).Both of them decreased compared with those of 1 week after SPR.Conclusion The slight damage to sensory function of lower extremities resulted from SPR may not affect the protectant sensory function of the body.The skin anaesthesia of lower extremities is probably concerned with the proportion of the excised root of spinal nerves during the SPR,but not associated with the age.The impaired symptoms of the sensory function of lower extremities resulted from SPR can spontaneous recover in 2-6 weeks after SPR.SPR is safely with the clinic research on the sensory function of lower extremities.