@article{ref1,
title="Descriptive epidemiology of mechanical hip pathology in adults under 50years of age. Prospective series of 292 cases: Clinical and radiological aspects and physiopathological review",
journal="Orthopaedics and traumatology: surgery and research",
year="2010",
author="Nogier, A. and Bonin, N. and May, O. and Gedouin, J-E and Bellaiche, L. and Boyer, T. and Lequesne, M.",
volume="96",
number="8 Suppl",
pages="S53-8",
abstract="Two hundred and ninety-two patients, aged between 16 and 50years and presenting with mechanical hip pathology, were included in a prospective multicenter study. The descriptive study concerned the clinical examination and analysis of three X-ray views (AP pelvic, Lequesne false profile and lateral axial view). The series comprised 62% males, mean age 35years, with 53% right side and 22% bilateral involvement. Initial trauma was reported in 19% of cases, and direct familial history of hip pathology in 20%. Seventy percent of the patients played sports, 30% were high-level athletes, and 17% played combat sports. The physical impingement sign was present in 18% to 65% of cases depending on the variant studied. On imaging (n=241), 62% of hips showed osteoarthritis, with 25% at the evolved stage. In the series, as a whole, there was a 35% rate of dysplasia, 63% of impingement and 5% of normal X-ray results. The radiologic impingement aspects were 58% cam-type, 19% pincer-type and 23% mixed. Twenty-two percent of dysplasia cases showed signs of associated impingement. Pain experienced exclusively in flexion/internal rotation/adduction on examination showed little sensitivity (20%) but considerable specificity (86%) for the main diagnosis of impingement. The links between impingement and dysplasia are discussed, and an integrative schema of all risk factors is put forward. LEVEL OF EVIDENCE: IV, descriptive epidemiological study.<p /> <p>Language: en</p>",
language="en",
issn="1877-0568",
doi="10.1016/j.otsr.2010.09.005",
url="http://dx.doi.org/10.1016/j.otsr.2010.09.005"
}