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  • Title: Femoral head deformity and severity of acetabular dysplasia of the hip.
    Author: Okano K, Yamaguchi K, Ninomiya Y, Matsubayashi S, Osaki M, Takahashi K.
    Journal: Bone Joint J; 2013 Sep; 95-B(9):1192-6. PubMed ID: 23997130.
    Abstract:
    Patients with acetabular dysplasia commonly undergo peri-acetabular osteotomy after skeletal maturity to reduce the risk of the late development of osteoarthritis. Several studies have suggested that deformity of the femoral head influences the long-term outcome. We radiologically examined 224 hips in 112 patients with acetabular dysplasia and early-stage osteoarthritis. There were 103 women and nine men with a mean age of 37.6 years (18 to 49). A total of 201 hips were placed in the acetabular dysplasia group and 23 in a normal group. The centre-edge angle and acetabular head index were significantly smaller (both p < 0.001), and the acetabular angle, acetabular roof angle and roundness index were significantly greater in the acetabular dysplasia group than those in the normal group (all p < 0.001). There were significant correlations between the roundness index and other parameters. Femoral head shape may be influenced by the severity of the acetabular dysplasia.
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