title: Extrarticular hip impingement.
abstract: Extrarticular causes of impingement have a current, interesting role in the complaint of groin pain in athletes. Subspine impingement is related to a prominent anterior inferior iliac spine (AIIS) and is actually described as a frequent cause of groin pain. Ischiofemoral impingement is described when the space between the lesser trochanter is decreased. Psoas impingement appears between the psoas tendon and the anterior labrum and anterior acetabular rim.
authors.affiliation: Orthopaedic Surgery and Traumatology Department, University Hospital Infanta Leonor, Madrid - Spain.
authors.forename: Óliver
authors.initials: Ó
authors.lastname: Marin-Peña
authors.affiliation: Orthopaedic Surgery and Traumatology Department, University Hospital Torrejon, Madrid - Spain.
authors.forename: Pablo
authors.initials: P
authors.lastname: Sierra-Madrid
authors.affiliation: Orthopaedic Surgery and Traumatology Department, University Hospital Reina Sofia, Murcia - Spain.
authors.forename: Raquel
authors.initials: R
authors.lastname: Lax-Pérez
authors.affiliation: Orthopaedic Surgery and Traumatology Department, University Hospital Santa Lucia, Cartagena - Spain.
authors.forename: Francisco
authors.initials: F
authors.lastname: Ferrero-Manzanal
mesh_terms: D001182:Arthroscopy / Q000379:methods*; D001265:Athletic Injuries / Q000175:diagnosis / Q000628:therapy; D000072700:Conservative Treatment / Q000379:methods; D005260:Female; D057925:Femoracetabular Impingement / Q000150:complications / Q000000981:diagnostic imaging*; D005500:Follow-Up Studies; D006119:Groin / Q000293:injuries* / Q000503:physiopathology; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D063806:Myalgia / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D019637:Orthopedic Procedures / Q000379:methods; D010147:Pain Measurement; D016658:Psoas Muscles / Q000503:physiopathology; D016059:Range of Motion, Articular / Q000502:physiology; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome