The clear zone in the acetabular side of Charnley THR. The factors correlating with the progression.:The Factors Correlating with the Progression

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In order to know the factors that influenced the progression of the clear zone in the acetabular side, we investigated 106 hips which were followed up for 5 years or more after Charnley THR.The progression of the acetabular clear zone didn't correlate with the sex, operative age, socket angle, acetabular cementing technique, acetabular anchoring, and the location of the socket if it was original acetabular location. But if it was osteonecrosis as the primary disease, the acetabular clear zone had wrong course compared with osteoarthrosis.The patient's general osteoporosis correlated with the progression of the acetabular clear zone. Concerning the bilateral THR, both acetabular clear zone took same courses.These suggest that the general factors have more correlation with the progression of the acetabular clear zone than the locational factors.
西日本整形・災害外科学会の論文