title: Anterior femoroacetabular impingement: part I. Techniques of joint preserving surgery.
abstract: The exact pathomechanism responsible for osteoarthritis (OA) of the nondysplastic hip has remained unknown for many years. There is, however, emerging clinical evidence implicating femoroacetabular impingement as an etiologic factor for having early OA of the hip develop. Femoroacetabular impingement is an abutment conflict occurring between the proximal femur and the acetabular rim arising from morphologic abnormalities affecting the acetabulum or the proximal femur, or both. The repetitive mechanical conflict occurring during motion, particularly flexion and internal rotation, can lead to lesions of acetabular labrum and, even more serious, the adjacent acetabular cartilage. Surgical treatment of femoroacetabular impingement focuses on improving the clearance for hip motion and alleviation of femoral abutment against the acetabular rim. We will describe the rationale for the treatment of this condition, and discuss the technique of joint-preserving surgery.
authors.affiliation: Department of Orthopaedic Surgery, University of Berne, Inselspital, Berne, Switzerland.
authors.forename: Martin
authors.initials: M
authors.lastname: Lavigne
authors.forename: Javad
authors.initials: J
authors.lastname: Parvizi
authors.forename: Martin
authors.initials: M
authors.lastname: Beck
authors.forename: Klaus A
authors.initials: KA
authors.lastname: Siebenrock
authors.forename: Reinhold
authors.initials: R
authors.lastname: Ganz
authors.forename: Michael
authors.initials: M
authors.lastname: Leunig
mesh_terms: D000077:Acetabulum / Q000002:abnormalities*; D005270:Femur Head / Q000002:abnormalities*; D006621:Hip Joint; D006801:Humans; D007592:Joint Diseases / Q000209:etiology / Q000601:surgery; D019637:Orthopedic Procedures / Q000379:methods*