title: Subclinical slipped capital femoral epiphysis. Relationship to osteoarthrosis of the hip.
abstract: We examined the femora of 2665 adult human skeletons from an osteological collection to determine the prevalence of post-slip morphology termed femoral head-tilt deformity by Murray and pistol-grip deformity by Stulberg et al. The hypothesis was that primary osteoarthrosis of the hip is a secondary manifestation of a subclinical developmental disorder of the hip. The prevalence of post-slip morphology was 8 per cent (215 of 2665 skeletons). Severe osteoarthrosis was more prevalent in association with post-slip morphology (116 [38 per cent] of 306 hips) than in the matched controls (seventy-nine [26 per cent] of 306 hips) (p < 0.005). In the skeletons that had unilateral post-slip morphology, severe osteoarthrosis was more prevalent in the involved hips (thirty-one [37 per cent] of eighty-three) than in the contralateral, normal hips (eighteen [22 per cent] of eighty-three) (p < 0.05). Post-slip morphology, which was unrelated to age, was found to be a major risk factor for the development of high-grade osteoarthrosis. We noted evidence of high-grade osteoarthrosis in sixty-three (68 percent) of the ninety-three hips with minimum post-slip morphology in skeletons from individuals who had been fifty-six years old or more at the time of death compared with forty-five (48 percent) of the ninety-three control hips. This difference was significant (p < 0.025) [corrected]. The osteoarthrosis in the hips with post-slip morphology was distinctly characterized by anterior flattening of the acetabulum, cystic degeneration in the anterior metaphyseal-epiphyseal region, and progression to global osteoarthrosis of the hip.
authors.affiliation: Cleveland Museum of Natural History, Ohio, USA.
authors.forename: D A
authors.initials: DA
authors.lastname: Goodman
authors.forename: J E
authors.initials: JE
authors.lastname: Feighan
authors.forename: A D
authors.initials: AD
authors.lastname: Smith
authors.forename: B
authors.initials: B
authors.lastname: Latimer
authors.forename: R L
authors.initials: RL
authors.lastname: Buly
authors.forename: D R
authors.initials: DR
authors.lastname: Cooperman
mesh_terms: D000077:Acetabulum / Q000473:pathology; D000328:Adult; D000375:Aging / Q000473:pathology; D004839:Epiphyses, Slipped / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D005260:Female; D005270:Femur Head / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000453:epidemiology / Q000209:etiology* / Q000473:pathology; D015995:Prevalence; D012307:Risk Factors