Fig. 4

Group B X-ray (Metha stem on CoM) in a patient suffering from secondary osteoarthritis post acetabular fracture. A: post-operative X-ray showing a well-positioned implant; B: last-follow-up X-ray (142 months) in an asymptomatic patient but with very high levels of chromium and cobalt, showing only calcar neck resorption in absence of any sign of pseudotumor or failure. The implant is well osseointegrated