Evoked potential as an adjuvant predictive tool for neurological deficit in acetabular and pelvic ring injuries: A meta-analysis.

OBJECTIVES: To identify the value of the evoked potential as an adjuvant predictive tool in pelvic ring and acetabulum fractures focusing on the neurological deficit. MATERIAL AND METHODS: Adhering to PRISMA guidelines, we performed a systematic review with a priori design to identify randomized controlled trials, retrospective and prospective cohort studies, and case-control studies of interventions in acetabular and pelvic ring injuries. The search strategy included the use of Title/Abstract related to: ("somatosensory" or "evoked potential" or "electrophysiology") and ("randomized controlled trials" or "clinical studies" or "controlled clinical trial" or "systematic literature review" or "meta-analysis" or "review" or "overview") and ("complications"). From 01/1985 to 12/2019, we searched MEDLINE, PubMed, EMBASE, and Cochrane, Centre for Reviews and Dissemination, reference lists and journals. The PRISMA checklist was adopted to evaluate reporting quality. Two reviewers independently selected studies and extracted data. Statistical analysis was conducted to assess the probability of evoked potential tests performed on random samples, with the assumption of normal distribution of the populations from which they were derived and knowledge of the parametric variance. RESULTS: Five articles fulfilled eligibility criteria. CONCLUSION: Evoked potential tests can quickly and accurately detect imminent neurological impairment during surgery of acetabular and pelvic ring injuries. This results in significantly better surgical outcomes, although in some cases the irreversible nature of the injury cannot be prevented.

Femur lengthening with monoplanar external fixator associated with locked intramedullary nail.

OBJECTIVE: This study aimed to demonstrate that the lengthening technique of an external fixator associated with locked intramedullary nail is an efficient method that decreases the duration of the external fixation and improves the rehabilitation period. METHODS: From January of 2005 to May of 2014, 31 patients with mean lower limb discrepancy of 5.31 cm were treated. The etiologies of the deformity were femur fracture sequelae, infection, hip development dysplasia, polio, and congenital short femur. RESULTS: The mean duration of external fixation was 2.47 months (external fixation index of 16.15 days per cm). The mean time for bone healing was 6.66 months (consolidation index 43 days per cm). Initial mean knee range of motion was -1° to 100°, progressing to 0°-115° at the end of treatment. The complications observed were incomplete osteotomies, hip subluxation, broken fixator, decreased knee range of motion, and need for locking screw removal. CONCLUSION: Femur lengthening with a monoplanar external fixator associated with locked intramedullary nail allowed for a shorter period of external fixation use, better protection for the regenerated bone tissue, and early rehabilitation with possible complications.

OBJETIVO: Demonstrar que a técnica de alongamento do fixador externo associado a haste intramedular bloqueada é eficaz e traz benefícios quanto ao tempo de uso do fixador e a melhoria na reabilitação. MÉTODO: Entre janeiro de 2005 e maio de 2014 foram tratados 31 pacientes com discrepância de membros inferiores com média de encurtamento de 5,31 cm. As etiologias da deformidade foram sequelas de fratura de fêmur, infecção, displasia de desenvolvimento do quadril, paralisia infantil e fêmur curto congênito. RESULTADOS: O tempo médio de fixação externa foi de 2,47 meses (índice de fixação externa de 16,15 dias por centímetro). O tempo médio necessário para consolidação óssea foi 6,66 meses (índice de consolidação 43 dias por centímetro). A amplitude de movimento do joelho média inicial era de -1 a 100 graus e no término do tratamento de 0 a 115 graus. As complicações observadas foram osteotomias incompletas, subluxação de quadril, quebra do fixador, limitação da amplitude do joelho e necessidade de retirada de material. CONCLUSÃO: A técnica de alongamento femoral com fixador externo monolateral sobre haste intramedular propicia um tempo menor de uso do fixador externo, melhor proteção do regenerado ósseo e reabilitação precoce, não isenta de complicações.

Femur lengthening with monoplanar external fixator associated with locked intramedullary nail / Alongamento ósseo femoral com fixador externo monoplanar associado a haste intramedular bloqueada

ABSTRACT OBJECTIVE: This study aimed to demonstrate that the lengthening technique of an external fixator associated with locked intramedullary nail is an efficient method that decreases the duration of the external fixation and improves the rehabilitation period. METHODS: From January of 2005 to May of 2014, 31 patients with mean lower limb discrepancy of 5.31 cm were treated. The etiologies of the deformity were femur fracture sequelae, infection, hip development dysplasia, polio, and congenital short femur. RESULTS: The mean duration of external fixation was 2.47 months (external fixation index of 16.15 days per cm). The mean time for bone healing was 6.66 months (consolidation index 43 days per cm). Initial mean knee range of motion was -1° to 100°, progressing to 0°-115° at the end of treatment. The complications observed were incomplete osteotomies, hip subluxation, broken fixator, decreased knee range of motion, and need for locking screw removal. CONCLUSION: Femur lengthening with a monoplanar external fixator associated with locked intramedullary nail allowed for a shorter period of external fixation use, better protection for the regenerated bone tissue, and early rehabilitation with possible complications.

RESUMO OBJETIVO: Demonstrar que a técnica de alongamento do fixador externo associado a haste intramedular bloqueada é eficaz e traz benefícios quanto ao tempo de uso do fixador e a melhoria na reabilitação. MÉTODO: Entre janeiro de 2005 e maio de 2014 foram tratados 31 pacientes com discrepância de membros inferiores com média de encurtamento de 5,31 cm. As etiologias da deformidade foram sequelas de fratura de fêmur, infecção, displasia de desenvolvimento do quadril, paralisia infantil e fêmur curto congênito. RESULTADOS: O tempo médio de fixação externa foi de 2,47 meses (índice de fixação externa de 16,15 dias por centímetro). O tempo médio necessário para consolidação óssea foi 6,66 meses (índice de consolidação 43 dias por centímetro). A amplitude de movimento do joelho média inicial era de -1 a 100 graus e no término do tratamento de 0 a 115 graus. As complicações observadas foram osteotomias incompletas, subluxação de quadril, quebra do fixador, limitação da amplitude do joelho e necessidade de retirada de material. CONCLUSÃO: A técnica de alongamento femoral com fixador externo monolateral sobre haste intramedular propicia um tempo menor de uso do fixador externo, melhor proteção do regenerado ósseo e reabilitação precoce, não isenta de complicações.