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The impact of pre-operative obesity on weight change and outcome in total knee replacement: A PROSPECTIVE STUDY OF 529 CONSECUTIVE PATIENTS

Dowsey, M. M., Liew, D., Stoney, J. D., Choong, P. F.·2010·The Journal of Bone and Joint Surgery. British volume

Abstract

We carried out a prospective, continuous study on 529 patients who underwent primary total knee replacement between January 2006 and December 2007 at a major teaching hospital. The aim was to investigate weight change and the functional and clinical outcome in non-obese and obese groups at 12 months post-operatively. The patients were grouped according to their pre-operative body mass index (BMI) as follows: non-obese (BMI < 30 kg/m 2), obese (BMI 3 30 to 39 kg/m 2) and morbidly obese (BMI > 40 kg/m 2). The clinical outcome data were available for all patients and functional outcome data for 521 (98.5%). Overall, 318 (60.1%) of the patients were obese or morbidly obese. At 12 months, a clinically significant weight loss of ≥ 5% had occurred in 40 (12.6%) of the obese patients, but 107 (21%) gained weight. The change in the International Knee Society score was less in obese and morbidly obese compared with non-obese patients (p = 0.016). Adverse events occurred in 30 (14.2%) of the non-obese, 59 (22.6%) of the obese and 20 (35.1%) of the morbidly obese patients (p = 0.001).

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Metadata

Authors
Dowsey, M. M., Liew, D., Stoney, J. D., & Choong, P. F.
Venue
The Journal of Bone and Joint Surgery. British volume
Published
2010-04
Volume
92-B
Issue
4
Pages
513-520
ISSN
  • 0301-620X (ISSN-L)
  • 2044-5377
OpenAlex
W2258478916
Cited by
162
References
2
FWCI
12.73
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The impact of pre-operative obesity on weight change and outcome in total knee replacement: A PROSPECTIVE STUDY OF 529 CONSECUTIVE PATIENTS. https://app.cochat.ai/papers/10.1302/0301-620x.92b4.23174
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Dowsey, M. M., Liew, D., Stoney, J. D., & Choong, P. F. (2010). The impact of pre-operative obesity on weight change and outcome in total knee replacement: A PROSPECTIVE STUDY OF 529 CONSECUTIVE PATIENTS. The Journal of Bone and Joint Surgery. British volume. https://doi.org/10.1302/0301-620x.92b4.23174

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