Measurement of polyethylene wear - a new three-dimensional methodology

被引:11
作者
Chen, JH
Wu, JSS
机构
[1] Natl Chunghsing Univ, Inst Engn Mech, Taichung 402, Taiwan
[2] Chung Shan Med & Dent Coll, Dept Phys Therapy, Taichung 402, Taiwan
关键词
3D wears; hip prosthesis; polyethylene wear;
D O I
10.1016/S0169-2607(01)00164-X
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Studies in the field of polyethylene wear of the acetabular cup have been generally discussed using a two-dimensional assumption on the coronal plane, significant errors thus appear. The present study proposes a new, advanced methodology in order to accurately estimate the polyethylene wear, Through the usage of the distance between X-ray focus and film and only one follow-up, anteroposterior (AP) radiograph, a three-dimensional (3D) algorithm is introduced here. Here, 91 primary total hip joint replacements in 67 patients have been examined and three findings are obtained. Results show that the mean rate of 3D linear wear of the polyethylene estimated by the current method is 0.230 +/- 0.036 mm per year, that of the 2D linear wear is 0.148 +/- 0.028 mm per year. Moreover, the wear depth of the femoral head on the sagittal plane is 0.173 +/- 0.043 mm per year by the current method. This study also shows that the adoption of only one AP radiograph in the evaluation of the 3D penetration of femoral head is possible. Furthermore, the methodology proposed here is more convenient than others. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.
引用
收藏
页码:117 / 127
页数:11
相关论文
共 31 条
[1]   THE GRID RADIOGRAPH - A SIMPLE TECHNIQUE FOR CONSISTENT HIGH-RESOLUTION VISUALIZATION OF THE HIP [J].
AMSTUTZ, HC ;
OUZOUNIAN, T ;
GRAUER, D ;
FLINK, C ;
KIRKPATRICK, J ;
BASSETT, L .
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME, 1986, 68A (07) :1052-1056
[2]   TOTAL HIP ARTHROPLASTY - REVIEW OF 333 CASES WITH LONG FOLLOW-UP [J].
BECKENBAUGH, RD ;
ILSTRUP, DM .
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME, 1978, 60 (03) :306-313
[3]   LARGE SAMPLE BIAS IN LEAST-SQUARES ESTIMATORS OF A CIRCULAR ARC CENTER AND ITS RADIUS [J].
BERMAN, M .
COMPUTER VISION GRAPHICS AND IMAGE PROCESSING, 1989, 45 (01) :126-128
[4]  
Burden R. L., 1988, NUMERICAL ANAL, V5
[5]   POLYETHYLENE WEAR IN CEMENTED METAL-BACKED ACETABULAR CUPS [J].
CATES, HE ;
FARIS, PM ;
KEATING, EM ;
RITTER, MA .
JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, 1993, 75 (02) :249-253
[6]  
CHARNLEY J, 1973, CLIN ORTHOP RELAT R, P9
[7]  
CHARNLEY J, 1975, CLIN ORTHOP RELAT R, P170
[8]  
CHEN JH, 1996, J ORTHOP SURG ROC, V13, P59
[9]  
CHEN JH, 1995, ANN S AW PAP ORTH RE
[10]  
CLARKE IC, 1976, CLIN ORTHOP RELAT R, P126