Highlights
- •It is not known to what extent physical function after total knee replacement may differ between China and the United States.
- •Despite having worse physical function before total knee replacement, the China group had greater gains in walking endurance and similar gains in repeated chair stands than did the U.S. group after surgery.
Abstract
Objective
To describe physical function before and six months after Total Knee Replacement (TKR)
in a small sample of women from China and the United States.
Design
Observational.
Setting
Community environment.
Outcomes
Both groups adhered to the Osteoarthritis Research Society International (OARSI) protocols
for the 6-minute walk and 30-second chair stand. We compared physical function prior
to TKR and 6 months after using linear regression adjusted for covariates.
Participants
Women (N=60) after TKR.
Interventions
Not applicable.
Results
Age and body mass index in the China group (n=30; 66y and 27.0kg/m2) were similar to those in the U.S. group (n=30; 65y and 29.6kg/m2). Before surgery, the China group walked 263 (95% confidence interval [CI], −309
to −219) less meters and had 10.2 (95% CI, −11.8 to −8.5) fewer chair stands than
the U.S. group. At 6 months when compared with the U.S. group, the China group walked
38 more meters, but this difference did not reach statistical significance (95% CI,
−1.6 to 77.4), and had 3.1 (95% CI, −4.4 to −1.7) fewer chair stands. The China group
had greater improvement in the 6-minute walk test than did the U.S. group (P<.001).
Conclusions
Despite having worse physical function before TKR, the China group had greater gains
in walking endurance and similar gains in repeated chair stands than did the U.S.
group after surgery.
Keywords
List of abbreviations:
BMI (body mass index), CI (confidence interval), OA (osteoarthritis), TKR (total knee replacement)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: July 28, 2017
Footnotes
Supported by the National Institutes of Health (grant nos. NIH AR47785, NIH U54 GM104941, and K12 HD055931).
Disclosures: none.
Identification
Copyright
© 2017 by the American Congress of Rehabilitation Medicine
