Cementless hip replacement by Harris/Galante system. A study of the radiological changes.:A Study of the Radiological Changes

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We have studied the radiological changes of a cementless hip replacement, using a Harris/Galante porous femoral component. Seventeen arthroplasties in 15 patients with an average age of 59.6 years (1 man and 14 women) were reviewed at a minimum of 12 and up to 28 months. The diagnosis was osteoarthritis in 13 hips, avascular necrosis in two, rheumatoid arthritis in one and femoral neck fracture in one.Bony atrophy around the trochanter, calcar changes with atrophy, round off and resorption, radio-opaque line along the stem, thickening of the cortex, stress shielding and sinking of the stem were found in the postoperative radiographs.We measured percentage of the femoral component to the femoral medullary canal by anteroposterior and lateral views. An average percentage by the anteroposterior view was 92.9% and one by the lateral view was 88.2%.Presence of a radio-opaque line at the tip of the stem and an extensive radio-opaque line along the distal half stem seen on the lateral view correlate to low percentage by the lateral view.
西日本整形・災害外科学会の論文