title: Traumatic posterior hip instability and femoroacetabular impingement in athletes.
abstract: We describe 3 cases of posterior hip instability associated with femoroacetabular impingement. In each case, we obtained a detailed medical history, performed a physical examination, evaluated imaging, recorded intraoperative findings, and clinically followed the patient for 1 year. Two of the 3 patients sustained a traumatic posterior hip subluxation caused by noncontact injuries. All patients had decreased internal rotation on physical examination, radiographic evidence of acetabular retroversion, a cam lesion, an elevated α angle, and a posterior acetabular rim fracture with associated labral injury. All patients underwent hip arthroscopy and direct repair of the bony acetabular fragment using 3 to 5 suture anchors. One-year follow-up in all cases demonstrated good to excellent results and full return to activities without restriction. Patients with femoroacetabular impingement may be predisposed to traumatic posterior dislocation or subluxation and a concomitant posterior acetabular rim fracture with labral injury. We propose that FAI predisposed these athletes to posterior hip instability.
authors.affiliation: Hospital for Special Surgery, New York, New York, USA. berkesm@hss.edu
authors.forename: Marschall B
authors.initials: MB
authors.lastname: Berkes
authors.forename: Michael B
authors.initials: MB
authors.lastname: Cross
authors.forename: Michael K
authors.initials: MK
authors.lastname: Shindle
authors.forename: Asheesh
authors.initials: A
authors.lastname: Bedi
authors.forename: Bryan T
authors.initials: BT
authors.lastname: Kelly
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D001265:Athletic Injuries / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D057925:Femoracetabular Impingement / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D025981:Hip Injuries / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D006621:Hip Joint / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D007593:Joint Instability / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D008297:Male; D016059:Range of Motion, Articular; D020127:Recovery of Function; D016896:Treatment Outcome