Background Seymour fractures are open, displaced juxta-epiphyseal fractures of the distal phalanx, with an overlying nail bed laceration that occur in children and adolescents with an open physis. This fracture occurs rarely, but its potential consequences are clinically significant. Due to anatomical particulars and proximity to the growth plate, this open fracture may result in soft tissue infection and osteomyelitis, leading to growth arrest and persistent mallet deformity. At present, there is no consensus as to the optimal management of Seymour fractures. The objective of this study will be to systematically evaluate the existing evidence to establish whether operative or non-operative management of Seymore fractures is associated with a lower incidence of infection. Methods We designed and registered a study protocol for a systematic review of comparative and observational studies. A comprehensive literature search will be conducted (from 1966 to present) in MEDLINE, EMBASE, CINAHL, Cochrane Library and Google Scholar databases. Grey literature will be identified through searching Open Grey and dissertation databases using an exhaustive search strategy. All clinical studies examining the management of Seymour fractures in children & adolescents will be included, comparing operative and non-operative groups. Operative management will be defined as formal washout and soft tissue debridement prior to reduction, whether in the emergency department or operating theatre. Non-operative management refers to washout without surgical debridement. Primary outcome measures will be the incidence of superficial and deep infection. Secondary outcomes will include adverse events such mal-union, non-union, need for re-operation, physeal disturbance, nail dystrophy/atrophy. Two independent reviewers will screen all citations, full-text articles, and abstract data. Conflicts will be resolved through discussion. The study methodological quality (or bias) will be appraised using an appropriate tool. A narrative synthesis will be performed and if two or more studies with comparable design and reporting the same outcome are identified, data will be pooled for comparative analysis. Discussion This review will provide robust evidence for the management of Seymour fractures, based on a cumulation of existing studies. Due to the rarity of this fracture pattern, included studies are expected to be mainly observational and prone to bias; however, there is value in summarising the evidence, assessing its risk of bias and performing meta-analysis where possible to guide clinicians. Registration PROSPERO CRD42020153726