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Σάββατο 29 Ιουλίου 2017

Physical Function after Total Knee Replacement: An observational study describing outcomes in a small group of women from China and the United States

Publication date: Available online 29 July 2017
Source:Archives of Physical Medicine and Rehabilitation
Author(s): Daniel K. White, Zhichang Li, Yuqing Zhang, Adam R. Marmon, Hiral Master, Joseph Zeni, Jingbo Niu, Long Jiang, Shu Zhang, Jianhao Lin
ObjectiveTo describe physical function before and six months after Total Knee Replacement (TKR) in a small sample of women from China and the United States (US).Participants60 women after TKR from China and the USDesign, Setting, Outcomes: Data was from an observational study of TKR outcomes in Newark, Delaware (US group) and a control group after TKR in Beijing (China group). Both groups followed the same Osteoarthritis Research Society International (OARSI) protocols for the six-minute walk and 30-second chair stand. We compared physical function prior to TKR and six months after using linear regression adjusted for covariates.ResultsAge and BMI were similar in the China group (n=30, 66 years and 27.0 kg/m2) as the US group (n=30, 65 years and 29.6 kg/m2). Before surgery, the China group walked 263 (95%CI [-309,-219]) less meters and had 10.2 (95%CI [-11.8, -8.5]) fewer chairs stands than the US group. At six months when compared to the US group, the China group walked 38 more meters, but this difference did not reach statistical significance (95%CI [-1.6, 77.4]), and had 3.1 (95%CI [-4.4, -1.7]) fewer chair stands. The China group had greater improvement in the six-minute walk compared with the US group, p< 0.001.ConclusionDespite having worse physical function prior to TKR, the China group had greater gains in walking endurance and similar gains in repeated chair stands compared with the US group after surgery.



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