Knee Arthroplasty, Total Clinical Trial
Official title:
Improving Physical Activity and Gait Symmetry After Total Knee Arthroplasty
The purpose of this pilot study is to examine the effectiveness of the Physical Activity and Symmetry (PAS) program, compared to an attention (ATT)control group, for patients with post-total knee arthroplasty (TKA). The investigators hypothesize that the PAS treatment will result in meaningful improvements in physical activity (PA) and joint loading symmetry compared to the ATT group.
Background and Significance: Total knee arthroplasty (TKA) has been shown to decrease pain and to improve range of motion and some aspects of physical function. However, accumulating evidence shows that patients have persistent deficits in other critical outcomes following TKA. First, the majority of patients do not substantially increase physical activity beyond levels prior to TKA, remaining well below Department of Health and Human Services recommendations and levels of healthy individuals. This has serious negative implications for both joint health and overall health. Second, studies show that gait asymmetries are common following TKA, such that patients continue to load the non-surgical leg more heavily during walking, even when the post-surgical leg is pain free. This places the contralateral limb at risk for developing or worsening osteoarthritis. Other research shows there is large variability in post-TKA rehabilitation, along with sub-optimal exercise content. Collectively, these findings emphasize the critical need to improve the post-TKA rehabilitation process. However, there are currently no evidence-based approaches to improve overall physical activity and deficits in joint loading symmetry that have been identified following TKA. Study Aims: This research project will provide important preliminary information on the novel post-TKA PAS program through achieving the following specific aims: 1) Obtain preliminary data on the efficacy of the PAS program with respect to the change in objectively assessed physical activity, measured via accelerometers; 2) Obtain preliminary data on the efficacy of the PAS program with respect to change in peak load symmetry during walking, measured by a novel 3-sensor insole device; 3) Assess the feasibility and acceptability of the PAS program following TKA. Study Description: Investigators will conduct an exploratory randomized controlled study, with n=60 patients >=18 years receiving post-TKA physical therapy (PT) at a UNC Healthcare System clinic. Patients will be equally allocated to the PAS intervention or an attention (ATT) control group. ;
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