Paper Info
Title
Measurement of polyethylene wear - a new three-dimensional methodology.
Abstract
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.
Year
DOI
Venue
2002
10.1016/S0169-2607(01)00164-X
Computer Methods and Programs in Biomedicine
Keywords
Field
DocType
3D wears,Hip prosthesis,Polyethylene wear
Prosthesis,Biomedical engineering,Coronal plane,Polyethylene,Femoral head,Lower limb,Computer science,Radiography,Statistics,Surgery,Sagittal plane
Journal
Volume
Issue
ISSN
68
2
0169-2607
Citations 
PageRank 
References 
7
3.14
2
Authors
2
Name
Order
Citations
PageRank
Jian-Horng Chen13412.63
James Shih-Shyn Wu2228.31