1. A. X-ray of congenital dislocation of the right hip. B
A. X-ray of congenital dislocation of the right hip. B. Analysis of hip radiographs presupposes adequately exposed films of a properly positioned patient. Hilgenreiner’s horizontal line is drawn through both triradiate cartilages (H), and Perkins’s vertical line is drawn through the outer margin of each acetabulum (P). If the hip is located, the proximal femoral epiphysis will lie in the inferomedial quadrant formed by the two intersecting lines. Proximal or lateral displacement indicates dislocation. Abnormal acetabular development is suggested by lack of obvious concavity and by an acetabular index (θ) greater than 30 degrees.
Source: Orthopedic Surgery, CURRENT Diagnosis & Treatment: Surgery, 14e
Citation: Doherty GM. CURRENT Diagnosis & Treatment: Surgery, 14e; 2015 Available at: Accessed: November 07, 2017
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