title: Functional outcome after Mason II-III radial head and neck fractures: study protocol for a systematic review in accordance with the PRISMA statement.
abstract: Fractures of the radial head and neck are the most common fractures of the elbow, and account for approximately one-third of all elbow fractures. Depending on the fracture type the treatment is either conservative or surgical. There is no absolute consensus regarding optimal treatment for different fracture types. The aim of this protocol is to present the method that will be used to collect, describe and analyse the current evidence regarding the treatment of Mason II-III radial head and neck fractures.
  
  
  
  We will conduct a systematic review in accordance with the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocol (PRISMA-P) guidelines statement. We will search a number of databases with a predefined search strategy to collect both randomised and non-randomised studies. The articles will be summarised with descriptive statistics. If applicable a meta-analysis will be conducted.
  
  
  
  Ethical approval is not required since this is a protocol for a systematic review and no primary data will be collected. The authors will publish findings from this review in a peer-reviewed scientific journal.
  
  
  
  CRD42016037627.
authors.affiliation: Department of Clinical Sciences at Danderyd Hospital, Karolinska Institute, Stockholm, Sweden.
authors.forename: Mårten
authors.initials: M
authors.lastname: Hagelberg
authors.affiliation: Department of Clinical Sciences at Danderyd Hospital, Karolinska Institute, Stockholm, Sweden.
authors.forename: Alexandra
authors.initials: A
authors.lastname: Thune
authors.affiliation: University of Gothenburg Institute of Clinical Sciences, Sahlgrenska Akademy, University of Gothenburg, Mölndal, Sweden.
authors.forename: Ferid
authors.initials: F
authors.lastname: Krupic
authors.affiliation: Department of Clinical Sciences at Danderyd Hospital, Karolinska Institute, Stockholm, Sweden.
authors.forename: Björn
authors.initials: B
authors.lastname: Salomonsson
authors.affiliation: Department of Clinical Sciences at Danderyd Hospital, Karolinska Institute, Stockholm, Sweden.
authors.forename: Olof
authors.initials: O
authors.lastname: Sköldenberg
mesh_terms: D001178:Arthroplasty; D000072700:Conservative Treatment; D005593:Fracture Fixation, Internal; D006801:Humans; D000070799:Open Fracture Reduction; D011885:Radius Fractures / Q000503:physiopathology / Q000628:therapy*; D020127:Recovery of Function; D000078202:Systematic Reviews as Topic; D000092464:Elbow Injuries
keywords: Radial head and neck fractures; Systematic review protocol; Treatment outcome