Abstract
Objectives: The purpose of this retrospective study is to report the incidence of osteolysis and evaluate the significance of screening computed tomography (CT) compared to plain radiography in detecting osteolysis after total hip arthroplasty with metal-on-highly cross-linked polyethylene bearings.Methods: We retrospectively reviewed 264 primary cementless total hip arthroplasties of 211 patients, 24 males, 187 females, who received postoperative screening CT scan in addition to radiography at postoperative 7–10 years (average 8.2 years). First-generation highly cross-linked polyethylene was used in all cases.Results: On the plain radiographs, no acetabular osteolysis (0%) and two cases of femoral osteolysis (0.8%) were found in the follow-up period. No osteolysis was newly found by screening CT scan.Conclusions: Very low incidence of osteolysis after total hip arthroplasty with highly cross-linked polyethylene at postoperative 7–10 years was confirmed, and routine screening CT scan for detecting osteolysis in this setting was not supported from this study.
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