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Clinical Orthopaedics and Related Research®
Published in: Clinical Orthopaedics and Related Research® 5/2013

01-05-2013 | Symposium: Special Considerations for TKA in Asian Patients

Comparative Demographics, ROM, and Function After TKA in Chinese, Malays, and Indians

Authors: Wei Ming Siow, MBBS, MRCS, Pak Lin Chin, MBBS, FRCS, Shi Lu Chia, MBBS, FRCS, Ngai Nung Lo, MBBS, MRCS, Seng Jin Yeo, MBBS, FRCS

Published in: Clinical Orthopaedics and Related Research® | Issue 5/2013

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Abstract

Background

There is marked racial disparity in TKA use rates, demographics, and outcomes between white and Afro-Caribbean Americans. Comparative studies of ethnicity in patients undergoing TKAs have been mostly in American populations with an underrepresentation of Asian groups. It is unclear whether these disparities exist in Chinese, Malays, and Indians.

Questions/purposes

We therefore determined whether (1) TKA use; (2) demographics and preoperative statuses; and (3) functional outcomes at 2 years after TKA differed among three ethnic groups, namely, Chinese, Malays, and Indians who underwent TKA.

Methods

From our hospital joint registry we identified 5332 patients who had a primary TKA from 2004 to 2009. The cohort was stratified by race and subsequently compared for demographics, preoperative knee ROM, and deformity. At the second postoperative year we determined Knee Society scores, Oxford knee scores, and obtained SF-36 health questionnaires.

Results

Six percent more Chinese patients underwent TKAs compared with Malays or Indians. Malays were operated on at a younger age with a higher body mass index. Chinese patients had more severe preoperative varus deformity. There were no major differences in joint ROM in all races. For Knee Society, Oxford knee, and SF-36 scores, Chinese patients had consistently higher preoperative and postoperative scores. Malays presented with the lowest preoperative scores but had the greatest improvement in scores at followup with postoperative scores similar to Chinese counterparts. Indians had the lowest postoperative scores and worst improvement of all

Conclusions

The variations in demographics, preoperative statuses, and subsequent postoperative outcomes between the races should be considered when comparing TKA outcome studies in Asian populations.

Level of Evidence

Level II, prognostic study. See Guidelines for Authors for a complete description of levels of evidence.
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Metadata
Title
Comparative Demographics, ROM, and Function After TKA in Chinese, Malays, and Indians
Authors
Wei Ming Siow, MBBS, MRCS
Pak Lin Chin, MBBS, FRCS
Shi Lu Chia, MBBS, FRCS
Ngai Nung Lo, MBBS, MRCS
Seng Jin Yeo, MBBS, FRCS
Publication date
01-05-2013
Publisher
Springer-Verlag
Published in
Clinical Orthopaedics and Related Research® / Issue 5/2013
Print ISSN: 0009-921X
Electronic ISSN: 1528-1132
DOI
https://doi.org/10.1007/s11999-012-2776-7

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