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  • Title: Comparison of four parameters to assess acetabular dysplasia and acetabular dysplasia rates in primary hip osteoarthritis patients: A study in Turkish population.
    Author: Adanir O, Zorer G.
    Journal: J Orthop Surg (Hong Kong); 2018; 26(2):2309499018768032. PubMed ID: 29669444.
    Abstract:
    INTRODUCTION: Hip osteoarthritis is an important orthopedic problem frequently observed in the elderly. Acetabular dysplasia (AD) is one of the pathologies that cause coxarthrosis. Nearly 20-45% of primary or idiopathic hip osteoarthritis is linked to AD. In our country, there are few studies on this topic. We measured the center-edge (CE) angle, Sharp's angle, acetabular depth, and femoral head coverage ratio on pelvis anteroposterior radiographs of patients with primary coxarthrosis and calculated the dysplasia rates. PATIENTS AND METHOD: Age at surgery and sex of the patients; and CE angle, Sharp's angle, acetabular depth, and femoral head coverage ratio for both operated and opposite hips were evaluated in 223 total hip prosthesis-performed patients with coxarthrosis. Also the distribution of mean age at surgery, sex of patients, dysplasia rates of operated hips, and bilateral dysplasia rates were calculated. RESULTS: The right to left ratio of operated hips was 104/119. Female to male ratio was 163/60 (2.7/1), for those with CE angle below 20° it was 123/30 (4.1/1), and it was 40/30 (1.3/1) with CE angle above 20°. Mean age of patients at surgery was 56.9 (±11.4) years. CE angle less than 20° was found in 68.6% of patients, acetabulum depth less than 9 mm was found in 75.3%, Sharp's angle was more than 45° in 65.9%, and femoral head coverage ratio was less than 70% in 70.3% of patients. CONCLUSIONS: We identified a high rate of AD in primary coxarthrosis patients undergoing total hip arthroplasty in the study population.
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