Elbow Flexion in Neonatal Brachial Plexus Palsy: A Meta-Analysis of Graft Versus Transfer

Abstract

Abstract INTRODUCTION Functional elbow flexion recovery is one of the main goals of neonatal brachial plexus palsy (NBPP) reconstruction. The current neurosurgical treatment options include nerve grafting and nerve transfer. The goal of the present study is to compare functional elbow flexion recovery in NBPP following nerve grafting or nerve transfer. METHODS The present study conducted a systematic literature review and meta-analysis according to PRISMA guidelines. A search was conducted on Pubmed for eligible studies published until November of 2018. Odds Ratios (OR) and 95% confidence intervals (CI) were calculated to compare functional elbow flexion outcomes between nerve graft and nerve transfer. A random-effects model meta-analysis was conducted. A Medical Research Council (MRC) score = 3 or Active Movement Scale (AMS) = 5 was considered functional recovery of elbow flexion. RESULTS The present study included 194 patients from 1990 2015 across five observational trials. Only pediatric patients with obstetric brachial plexus injury were included. The mean patient age at surgery varied between studies from 5.7 to 11.9 mo and mean follow-up from 12 to 70 mo. No complications or cases of donor site morbidity were reported. Functional recovery occurred with nerve transfer in 95.2% of patients (n = 59/62) and with nerve grafting in 96.4% of patients (n = 54/56). Overall, the outcomes for elbow flexion between the groups appeared similar (OR: 1.15, 95% CI: 0.19-7.08, I2: 2.9%). CONCLUSION The optimal approach to brachial plexus reconstruction in NBPP continues to be the subject of debate. As one of the most important outcomes, the present meta-analysis finds that functional recovery of elbow flexion does not appear to differ between nerve grafting and nerve transfer.