POLYETHYLENE SOCKETS AND ALUMINA CERAMIC HEADS IN CEMENTED TOTAL HIP-ARTHROPLASTY - A 10-YEAR STUDY

被引:100
作者
SUGANO, N
NISHII, T
NAKATA, K
MASUHARA, K
TAKAOKA, K
机构
来源
JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME | 1995年 / 77B卷 / 04期
关键词
D O I
10.1302/0301-620X.77B4.7615596
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
From 1981 to 1983, we implanted Bioceram type-4 and type-5 prostheses in 61 hips in 54 patients with osteoarthritis secondary to acetabular dysplasia, congenital subluxation, or congenital dislocation of the hip, Fifty-seven hips in 50 patients were followed for a mean of 11.1 years (10 to 13), The mean age of the patients at operation was 53 years (31 to 70), Functional evaluation using the Merle d'Aubigne and Postel hip score showed a 77% success rate. Radiological loosening occurred in three femoral (5%) and 16 acetabular components (28%), Autologous femoral head grafts were used in 18 hips and became incorporated, giving mechanical support to the socket except for one which occupied a large weight-bearing area and eventually collapsed. The mean polyethylene wear was 1.1 mm (0 to 3.6) and the mean wear rate was 0.10 mm/year (0 to 0.31), A high rate of wear correlated with calcar resorption (p > 0.002) but not with acetabular loosening, There was no breakage of a ceramic head, Study of the ceramic heads and polyethylene sockets retrieved after ten years showed excellent surface roughness, sphericity, and bending strength for the heads but scratches and voids were seen on the sockets.
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页码:548 / 556
页数:9
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