title: Sources and quality of literature addressing femoroacetabular impingement: a scoping review 2011-2015.
abstract: A systematic review was performed to explore the current trends over the last 5 years in femoroacetabular impingement (FAI) literature and compare the quality and sources of publications in the literature to that published previously. We identified 1066 relevant studies including 186,572 patients. The number of publications increased during the reviewed time period with the most dramatic increase from 2011 to 2013. Seventy-three percent (N = 786) of all studies were of levels 4 and 5 quality evidence. The percent of publications which were levels 1, 2 and 3 increased by almost twofold from 16.1 % (N = 26) to 28.7 % (N = 51) between 2011 and 2015. In comparison to previous work, there has been 3.5-fold increase in the number of publications over the past 5 years with a shift towards improving the level of evidence available guiding the arthroscopic management of FAI.
  
  
  METHODS
  IV-Systematic Review.
authors.affiliation: Division of Orthopaedics, Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4L8.
authors.forename: Moin
authors.initials: M
authors.lastname: Khan
authors.affiliation: Division of Orthopaedics, Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4L8.
authors.forename: Kayode O
authors.initials: KO
authors.lastname: Oduwole
authors.affiliation: McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4L8.
authors.forename: Parul
authors.initials: P
authors.lastname: Razdan
authors.affiliation: Division of Orthopaedics, Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4L8.
authors.forename: Mark
authors.initials: M
authors.lastname: Phillips
authors.affiliation: Michael G. DeGroote School of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4L8.
authors.forename: Seper
authors.initials: S
authors.lastname: Ekhtiari
authors.affiliation: Michael G. DeGroote School of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4L8.
authors.forename: Nolan S
authors.initials: NS
authors.lastname: Horner
authors.affiliation: Department of Orthopaedics, Sahlgrenska University Hospital, SE-413 45, Gothenburg, Sweden.|Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Box 100, S-405 30, Göteborg, Sweden.
authors.forename: Kristian
authors.initials: K
authors.lastname: Samuelsson
authors.affiliation: Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Box 100, S-405 30, Göteborg, Sweden. ayenif@mcmaster.ca.|Division of Orthopaedics, Department of Surgery, McMaster University, 1280 Main Street West, HSC 4E15, Hamilton, Ontario, L8S 4L8, Canada. ayenif@mcmaster.ca.
authors.forename: Olufemi R
authors.initials: OR
authors.lastname: Ayeni
keywords: Evidence; FAI; Femoroacetabular impingement; Hip arthroscopy; Surgery; Systematic review