Measurement Methods for Acetabular Cup Wear in Total Hip Replacement Arthroplasty: Accuracy versus ease of use.
10.4055/jkoa.2003.38.2.117
- Author:
Joon Soon KANG
1
;
Seung Rim PARK
;
Hyoung Soo KIM
;
Seung Hoon YEOUM
;
Yeong Hyun YOON
Author Information
1. Department of Orthopaedic Surgery, Inha University, Inha Hospital, Sungnam, Korea. kangjoon@inha.ac.kr
- Publication Type:Original Article
- Keywords:
Hip Arthroplasty;
Polyethylene Wear;
Measurement
- MeSH:
Acetabulum*;
Arthroplasty*;
Arthroplasty, Replacement, Hip*;
Hip;
Polyethylene
- From:The Journal of the Korean Orthopaedic Association
2003;38(2):117-121
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To compare the accuracy of four wear measurement methods using 17 retrieved polyethylene liners previously used in revision hip arthroplasty. MATERIAL AND METHOD: Direct measurement was done using a point contact micrometer. Three manual measurement methods and Devane's three dimensional computerized method were compared. RESULT: Dorr's method underestimated wear by 26.2% with a mean error of 0.39 mm. Livermore's method estimated wear to within 22.4%, with a mean error of 0.21 mm, Devane's method estimated wear to within 12.1%, with a mean error of 0.14 mm. The new method (with correction factor adjustment by the Dorr method) estimated wear to within 13.4%, with a mean error of 0.17 mm. CONCLUSION: The new method can more accurately estimate average acetabular cup wear.
