title: Prevalence of acetabular cartilage lesions and labral tears in femoroacetabular impingement.
abstract: The goal of this study was to determine the prevalence of associated acetabular cartilage lesions and labral tears in patients with cam-type femoro-acetabular impingement (FAI). We evaluated acetabular cartilage lesions and labral tears found during hip arthroscopy in 52 patients with radiological signs of cam-type FAI. We found a high prevalence of associated lesions (86.5%) in patients with cam-type FAI. They were graded according to the morphology, extent, and location of the lesion. Forty-one patients (78.8%) had an acetabular cartilage lesion. Labral tears were found in 31 patients (59.6%). There was a high correlation between age and the presence and extent of acetabular cartilage and labral lesions (r = 0.70; p < 0.0001 and r = 0.45; p <0.001 respectively). There was also a high correlation between the extent of the acetabular cartilage lesion and the presence of labral lesions (r = 0.62; p < 0.0001). Despite the recognized consequences of associated lesions on treatment and outcome, no classification system includes this aspect of FAI. Based on our findings, we developed a system to grade acetabular cartilage lesions according to their morphology and extent. This information can help to define the natural history of cam-type FAI, and to determine appropriate treatment.
authors.affiliation: University College London Hospital, London, United Kingdom. geertmeermans@hotmail.com
authors.forename: Geert
authors.initials: G
authors.lastname: Meermans
authors.forename: Sujith
authors.initials: S
authors.lastname: Konan
authors.forename: Fares S
authors.initials: FS
authors.lastname: Haddad
authors.forename: Johan D
authors.initials: JD
authors.lastname: Witt
mesh_terms: D000077:Acetabulum / Q000473:pathology* / Q000503:physiopathology; D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D001696:Biomechanical Phenomena; D002358:Cartilage, Articular / Q000473:pathology*; D005260:Female; D005269:Femur / Q000503:physiopathology; D006621:Hip Joint / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult