Journal List > J Korean Orthop Assoc > v.38(2) > 1013602

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Kang, Park, Kim, Yeoum, and Yoon: Measurement Methods for Acetabular Cup Wear in Total Hip Replacement Arthroplasty: Accuracy versus ease of use
Original Article

Journal of the Korean Orthopaedic Association 2003; 38(2): 117-121.

Published online: 3 January 2018

DOI: https://doi.org/10.4055/jkoa.2003.38.2.117

Measurement Methods for Acetabular Cup Wear in Total Hip Replacement Arthroplasty: Accuracy versus ease of use

Joon Soon Kang, Seung Rim Park, Hyoung Soo Kim, Seung Hoon Yeoum, Yeong Hyun Yoon

Department of Orthopaedic Surgery, Inha University, Inha Hospital, Sungnam, Korea.

kangjoon@inha.ac.kr

Copyright © 2003 The Korean Orthopaedic Association

Abstract

Purpose

To compare the accuracy of four wear measurement methods using 17 retrieved polyethylene liners previously used in revision hip arthroplasty.

Materials and Methods

Direct measurement was done using a point contact micrometer. Three manual measurement methods and Devane's three dimensional computerized method were compared.

Results

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.

Keywords: Hip Arthroplasty, Polyethylene Wear, Measurement

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