title: Return-to-play rates following arthroscopic treatment of femoroacetabular impingement in competitive baseball players.
abstract: OBJECTIVE
  Femoroacetabular impingement (FAI) has been increasingly recognized in cutting sports including soccer, hockey and football. More recently, the prevalence among overhead athletes has also been recognized. The purpose of this study was to review impingement patterns, return-to-play rates and clinical outcome following arthroscopic treatment of FAI among high-level baseball players.
  
  
  METHODS
  Between 2010 and 2014, 70 competitive baseball players (86 hips; age 22.4 ± 4.5 years) were identified. Demographics and return-to-play rates were recorded. Patient-reported outcome scores, including the Modified Harris Hip Score (mHHS), the Hip Outcome Score-Activity of Daily Living (HOS-ADL), the Sport-specific Subscale (HOS-SSS), and the International Hip Outcome Tool (iHOT-33), were collected pre-operatively at 6 months and 1year (n = 34, 49% of cohort).
  
  
  RESULTS
  The cohort included professional (27.1%), college (57.1%), high-school (8.6%) and club-team athletes (7.1%). Infielder (37.5%), pitcher (22.9%) and catcher (16.7%) were the most common positions. Average follow-up was 16.8 months (range 12.1-34.2). There was no relationship between playing position and impingement pattern (p ≥ 0.459), or between symptom laterality and handedness, batting position or playing position (p ≥ 0.179). One patient required revision surgery (infection). Return to sport rate was 88%, at a mean of 8.6 ± 4.2 months, with 97.7% returning at/above their pre-injury level of play. There was significant improvement in all outcome measures: mHHS (60.1 ± 11.9 to 93 ± 9.5), HOS-ADL (71.3 ± 16.7 to 96.3 ± 3.6), HOS-SSS (51.3 ± 24.8 to 92.3 ± 8.2) and iHOT-33 (40.7 ± 19.9 to 85.9 ± 14) (p < 0.001).
  
  
  CONCLUSIONS
  Arthroscopic treatment of FAI in competitive baseball players resulted in high return-to-play rates at short-term follow-up, with significant improvements in clinical outcome scores.
authors.affiliation: a Center for Hip Preservation , Hospital for Special Surgery , New York , NY , USA.
authors.forename: Ryan M
authors.initials: RM
authors.lastname: Degen
authors.affiliation: a Center for Hip Preservation , Hospital for Special Surgery , New York , NY , USA.
authors.forename: Kara G
authors.initials: KG
authors.lastname: Fields
authors.affiliation: a Center for Hip Preservation , Hospital for Special Surgery , New York , NY , USA.
authors.forename: C Sally
authors.initials: CS
authors.lastname: Wentzel
authors.affiliation: a Center for Hip Preservation , Hospital for Special Surgery , New York , NY , USA.
authors.forename: Bethanne
authors.initials: B
authors.lastname: Bartscherer
authors.affiliation: a Center for Hip Preservation , Hospital for Special Surgery , New York , NY , USA.
authors.forename: Anil S
authors.initials: AS
authors.lastname: Ranawat
authors.affiliation: a Center for Hip Preservation , Hospital for Special Surgery , New York , NY , USA.
authors.forename: Struan H
authors.initials: SH
authors.lastname: Coleman
authors.affiliation: a Center for Hip Preservation , Hospital for Special Surgery , New York , NY , USA.
authors.forename: Bryan T
authors.initials: BT
authors.lastname: Kelly
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D001182:Arthroscopy / Q000379:methods*; D056352:Athletes; D001484:Baseball; D057925:Femoracetabular Impingement / Q000601:surgery*; D006615:Hip / Q000601:surgery*; D006621:Hip Joint / Q000601:surgery*; D006801:Humans; D008297:Male; D012086:Reoperation; D000068958:Return to Sport; D016896:Treatment Outcome; D055815:Young Adult
keywords: Hip arthroscopy; baseball; femoroacetabular impingement; outcomes