Vuvu TM, Dorniol M, Le Nen D, et al. - In children with brachial plexus birth injury (BPBI), researchers performed a systematic review and meta-analysis to assess changes in shoulder mobility and bone and joint deformity, to evaluate the impact of release with and without tendon transfer on the same outcomes, as well as to assess the peri-operative and long-term complications. Thirteen articles were involved: 6 low quality and 7 moderate quality separated into 17 studies (266 children). This systematic review found that both shoulder mobility and bone deformity are effectively improved by arthroscopic release, with few complications in young children with BPBI. A stepwise approach starting with a release without transfer seems reasonable to propose. Arthroscopic release significantly improved Mallet score and passive external rotation; percentage humeral head anterior and glenoid retroversion also improved.