Anteversion of the acetabular cup. Measurement of angle after total hip replacement.
We describe a new method for the accurate measurement of the angle of anteversion of an acetabular cup from standard anteroposterior radiographs, and provide the conversion tables required. The effect of the centering of the radiograph is discussed and a method of distinguishing between anteversion and retroversion by using a caudally directed x-ray beam is described.
D000077:Acetabulum / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D001699:Biometry / Q000379:methods; D006617:Hip Dislocation / Q000517:prevention & control; D006622:Hip Prosthesis; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control; D011859:Radiography