Article

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/m(2)) were similar
to those in the U.S. group (n=30; 65y and 29.6kg/m(2)). 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.
CI - Copyright (c) 2017 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS