Lesiones del plexo braquial en adultos: una revisión narrativa de la literatura / Brachial plexus injuries in adults: a narrative review of the literature

La patología traumática del plexo braquial comprende un amplio espectro de lesiones potencialmente devastadoras para la funcionalidad de los pacientes. El objetivo del presente trabajo es realizar una revisión narrativa de la literatura enfocada en el diagnóstico y estudio de las lesiones del plexo braquial en adultos, además de entregar nociones básicas sobre el manejo de esta compleja patología

Traumatic brachial plexus injuries comprise a wide spectrum of lesions that are potentially devastating to the functionality of the patients. The aim of the present review is to perform a narrative review of the literature focused on the diagnosis and study of brachial plexus injuries in adults, in addition to providing basic guidelines on the management of this complex pathology.

Validação de um instrumento de avaliação da funcionalidade para indivíduos com lesão traumática do plexo braquial ­ perspectiva dos pacientes / Validation of a functioning evaluation instrument for individuals with traumatic brachial plexus injury - patients' perspective

Introdução: Dentre as Lesões do Plexo Braquial (LPB), 80% a 90% são resultantes de traumas auto/motociclísticos. As Lesões Traumáticas do Plexo Braquial (LTPB) são uma condição altamente incapacitante, com prevalência em homens entre 21 e 40 anos, que em sua maioria, são moradores de região urbana e trabalhadores braçais. Objetivo: O estudo visa realizar uma das três etapas necessárias para a validação de um instrumento de avaliação da funcionalidade, baseado na Classificação Internacional de Funcionalidade, Incapacidade e Saúde (CIF), para indivíduos com LTPB. Métodos: Trata-se de um estudo qualitativo com grupo focal, composto por 5 (cinco) indivíduos adultos com LTPB. Resultados: Das cinquenta e seis categorias da CIF presentes no instrumento a ser validado, trinta e uma foram relatadas pelos indivíduos que participaram do grupo focal. Uma categoria referente ao componente de atividade e participação foi citada pelos participantes e não havia sido contemplada pelo instrumento. Em relação às categorias da CIF de fatores ambientais, apenas duas categorias citadas pelos participantes do grupo não estão presentes no instrumento de avaliação. Conclusão: A maioria das categorias da CIF presentes no instrumento de avaliação a ser validado pôde ser confirmada a partir da perspectiva de indivíduos com LTPB participantes do grupo focal. (AU)

Among brachial plexus injuries (BPI), 80% to 90% are result of automovel or motorcycle traumas. Traumatic brachial plexus injuries (TBPI) are a highly incapacitating condition. The most prevalent are in men between the ages of 21 and 40, where the majority are urban residents and manual workers. Objective: The aim of this study is the validation of a functional evaluation tool based on International Classification of Functioning, Disability and Health (ICF) for individuals with TBPI. Methodology: This is a qualitative study with a focal group, composed of 5 (five) adult individuals with TBPI. Results: Of the fifty-six ICF categories present in the instrument to be validated, thirty-one were reported by individuals who participated in focal group. Only one category referring to the activity and participation component was mentioned by the participants and had not been contemplated by the instrument. Regarding the ICF categories of environmental factors, only two categories cited by group participants are not present in the assessment. Conclusion: Most of the ICF categories present in the assessment instrument to be validated could be confirmed from the perspective of individuals with TBPI participants in the focus group. (AU)

Neonatal brachial plexus palsy: a permanent challenge / Paralisia do plexo braquial neonatal: um desafio permanente

Neonatal brachial plexus palsy (NBPP) has an incidence of 1.5 cases per 1000 live births and it has not declined despite recent advances in obstetrics. Most patients will recover spontaneously, but some will remain severely handicapped. Rehabilitation is important in most cases and brachial plexus surgery can improve the functional outcome of selected patients. This review highlights the current management of infants with NBPP, including conservative and operative approaches.

A paralisia neonatal do plexo braquial (PNPB) tem uma incidência de 1,5 casos por 1000 nascidos vivos e não tem diminuído a despeito dos recentes avanços em obstetrícia. A maioria dos pacientes recupera-se espontaneamente, mas alguns permanecerão com sequelas graves. A reabilitação é importante na maioria dos casos e a cirurgia do plexo braquial pode melhorar o resultado funcional em pacientes selecionados. Esta revisão destaca o manejo atual de lactentes com PNPB, incluindo as terapêuticas conservadora e cirúrgica.

Prognostic value of thumb pain sensation in birth brachial plexopathy / Valor prognóstico da sensibilidade dolorosa do polegar na plexopatia braquial relacionada ao parto

OBJECTIVE: To evaluate the prognostic value of absent thumb pain sensation in newborns and young infants with birth brachial plexopathy. METHODS: We evaluated 131 patients with birth brachial plexopathy with less than two months of age. Pain sensation was evoked by thumb nail bed compression to evaluate sensory fibers of the upper trunk (C6). The patients were followed-up monthly. Patients with less than antigravity elbow flexion at six months of age were considered to have a poor outcome. RESULTS: Thirty patients had absent thumb pain sensation, from which 26 showed a poor outcome. Sensitivity of the test was 65% and specificity was 96%. CONCLUSION: Evaluation of thumb pain sensation should be included in the clinical assessment of infants with birth brachial plexopathy.

OBJETIVO: Avaliar o valor prognóstico da hipoestesia dolorosa no polegar em recém-nascidos e lactentes jovens com plexopatia braquial obstétrica. MÉTODOS: Avaliamos 131 pacientes com plexopatia braquial obstétrica com menos de dois meses de idade. A sensação dolorosa foi provocada pela compressão do leito ungueal do polegar para avaliar fibras sensitivas do tronco superior (C6). Os pacientes foram seguidos mensalmente. Prognóstico desfavorável foi atribuído aos pacientes sem força antigravitacional para flexão do cotovelo aos seis meses de idade. RESULTADOS: Trinta pacientes apresentaram hipoestesia dolorosa do polegar, dos quais 26 tiveram prognóstico desfavorável. A sensibilidade do teste foi de 65% e a especificidade 96%. CONCLUSÃO: A avaliação da sensibilidade dolorosa do polegar deve ser incluída na avaliação clínica de pacientes com plexopatia braquial obstétrica.

Anatomical and Electrophysiological Myotomes Corresponding to the Flexor Carpi Ulnaris Muscle

This study was designed to investigate the incidence of lateral root of the ulnar nerve through cadaveric dissection and to analyze its impact on myotomes corresponding to the flexor carpi ulnaris (FCU) assessed by electrodiagnostic study. Dissection of the brachial plexus (BP) was performed in 38 arms from 19 cadavers, and the connecting branches between the lateral cord and medial cord (or between lateral cord and ulnar nerve) were investigated. We also reviewed electrodiagnostic reports from January 2006 to May 2008 and selected 106 cases of single-level radiculopathy at C6, C7, and C8. The proportion of abnormal needle electromyographic findings in the FCU was analyzed in these patients. In the cadaver study, branches from the lateral cord to the ulnar nerve or to the medial cord were observed in 5 (13.1%) of 38 arms. The incidences of abnormal electromyographic findings in the FCU were 46.2% (36/78) in C7 radiculopathy, 76.5% (13/17) in C8 radiculopathy and 0% (0/11) in C6 radiculopathy. In conclusion, the lateral root of the ulnar nerve is not an uncommon anatomical variation of the BP and the FCU commonly has the C7 myotome. Needle EMG of the FCU may provide more information for the electrodiagnosis of cervical radiculopathy and brachial plexopathy.

Prognostic relevance of risk factors for obstetrical brachial plexopathy

Realizamos um estudo caso-controle para verificar se o peso ao nascimento, parto forceps ou asfixia perinatal apresentam efeito significativo no prognóstico da plexopatia braquial obstétrica. O grupo A foi composto por 25 lactentes que apresentavam recuperação completa aos 6 meses de idade. O grupo B foi composto por 21 lactentes incapazes de remover uma venda do rosto com o membro acometido na posição sentada aos 12 meses de idade. Não houve diferença significativa entre as medianas de peso ao nascimento ou do boletim Apgar do primeiro minuto entre os grupos. Também não foi observada relação entre peso ao nascimento maior que 4000g, boletim Apgar do primeiro minuto menor do que 6 ou parto forceps com um prognóstico desfavorável.

Estudo epidemiológico das lesões traumáticas de plexo braquial em adultos / Epidemiological study of the traumatic brachial plexus injuries in adults

OBJETIVO: Determinar informações epidemiológicas sobre as variáveis relacionadas ao trauma de plexo braquial em adultos. MÉTODO: Foram analisados 35 pacientes, de maneira prospectiva, atendidos consecutivamente no período de um ano. RESULTADOS: A maioria das lesões apresentou localização supraclavicular (62 por cento), sendo 21 lesões por mecanismo de tração (60 por cento), nove por projétil de arma de fogo (25 por cento), três por compressão (8,5 por cento) e dois ferimentos cortantes (5,7 por cento). Acidentes motociclísticos responderam por 54 por cento das causas do trauma. A TC-mielografia identificou avulsão radicular em 16 casos (76 por cento). Melhora neurológica parcial espontânea foi observada em 43 por cento dos pacientes. Dor neuropática foi observada em 25 casos (71 por cento) sendo que em 16 (64 por cento) pôde ser controlada com medicações orais. CONCLUSÃO: Os traumas de plexo braquial são mais freqüentemente associados aos mecanismos de tração, sendo comum identificação de avulsão radicular. Em geral produzem dor no membro afetado e estão associados a lesões em outros órgãos. Na presente série, a incidência calculada para a população de abrangência foi 1,75/100000/ano.

Value of clinical findings, electrodiagnosis and magnetic resonance imaging in the diagnosis of root lesions in traumatic brachial plexus injuries.

OBJECTIVE: To evaluate the diagnostic value of clinical findings, electromyography and magnetic resonance imaging of root lesions in traumatic brachial plexus injuries MATERIAL AND METHOD: The authors clinically evaluated 175 cervical roots (C5-8, T1) in patients with traumatic brachial plexus injuries then with electromyography and magnetic resonance imaging (MRI). Each finding, taken alone and in combination with each other, was compared with the findings of exploratory surgery. RESULTS: The mean correlations of the clinical findings, electromyography and MRI in relation to the surgical findings were 60, 87 and 70 percent, respectively. The mean correlation was highest (90%) when the positive findings from the clinical, electromyographic or MRI investigations were combined. The correlation of the C5-6 root injuries was improved to 100% though the mean correlation was only 90%. CONCLUSION: The combination of clinical findings and electromyography correlated well with the surgical findings of root lesions caused by traumatic brachial plexus injury. MRI markedly improved identification only of C5-6 root injuries.

Brachial plexus injury in vaginal delivery

To study the incidence and persistence of brachial plexus injury [BPI] and the ability to predict its occurrence pre-natally depending on patients' criteria and antepartum-partum course. During a 3-year period from June 2001-June 2004 at Queen Alia Military Hospital, Royal Medical Services, Amman, Jordan, all newborns with BPI were identified [patients group] and followed-up for a one-year period. Obstetric details were compared with a control group who were delivered during the same period. Obstetrical neonatal features of both groups were compared. Over the mentioned period, 30 cases of BPI were identified from a total 11560 deliveries [0.25%]. Persistency for more than one year was present in 5 cases [17%]. Both groups were compared regarding certain known maternal and intra-partum risk factors. Significant risk was history of having shoulder dystocia in previous and current pregnancy [p<0.05] and duration of labor [p<0.05]. Brachial plexus impairment was encountered in the presence of normal course of labor and delivery. No predictable risk factors were found that could be avoided antenatally to prevent BPI

Evaluación mediante resonancia magnética (RM) de las lesiones obstétricas del plexo braquial / Obstetrical brachial plexus injuries: a MRI diagnostic approach

Propósito. Demostrar la utilidad de la resonancia magnética (RM) en la evaluación de las lesiones obstétricas del plexo braquial. Material y métodos. Fueron evaluados mediante RM de campo alto (1,5 Tesla) 23 pacientes con semiología correspondiente a parálisis del plexo braquial. Se estudió con bobina de cerebro en los planos axial, coronal oblicuo y sagital en secuencias ponderadas para T1, T2 y STIR. Resultados. En cuatro pacientes (17 por ciento) el examen fue considerado como normal. En 19 pacientes (83 por ciento) se obtuvieron hallazgos patológicos (pseudomeningoceles, neuromas, tumor y quiste aracnoideo). Conclusión. La RM es un método no invasivo que logra determinar el sitio y grado de compromiso del plexo braquial, permitiendo de esta manera programar en forma precisa la terapéutica a instituir

Brachial plexus injury and pain: incidence and the effects of surgical reconstruction.

A prospective study of pain after brachial plexus injury was carried out on 246 patients with at least 2 years follow-up. All of them had closed traction injury from motorcycle accidents. There were 16 females and 230 males aged from 16 to 44 years old. The patients' biodata, onset of pain, characteristics of pain and treatment were recorded. Changes in pain after conservative and operative treatment and the outcome of treatment were analysed. Two hundred and nineteen patients (89%) had significant pain and 182 patients (74%) had severe pain. Most of them had continuous pain with 2 to 20 peaks of severe pain per day. Crushing type of pain was the most common but mixed type of pain caused the most distress. Conservative treatment before surgery could relieve the pain in 39 patients (15.8%). Surgical reconstruction could further relieve the pain in 176 patients (80.36%). However, 21 patients (8.5%) still had severe pain. Improvement in sensory function had more effect on pain reduction than motor function.