Fig. 2

A patient with bilateral hip prostheses aseptically loosened had undergone bilateral primary total hip arthroplasties eight years ago. Cemented prostheses were implanted in both of his hips. Before revision, aseptic loosening of the prostheses could be found in the bilateral hips of the patient. a After revision, an uncemented short stem was implanted. b At the last follow-up, the prosthesis was stable with satisfactory functional recovery