Electronic Thesis and Dissertation Repository

Thesis Format

Monograph

Degree

Master of Science

Program

Health and Rehabilitation Sciences

Supervisor

Birmingham, Trevor B.

2nd Supervisor

Chesworth, Bert M.

Abstract

Objectives: Performance-based outcome measures (PBOM) are suggested to evaluate change in function during rehabilitation after total knee arthroplasty (TKA). The purpose of this study was to evaluate the measurement properties of the 30-Second Chair Stand Test (30CST) and 10-Metre Walk Test (10MWT) in patients following TKA.

Methods: Eighty-three patients completed two PBOM on three occasions following surgery. Patients also completed the Western Ontario and McMaster Universities Osteoarthritis Index and Global Rating of Change (GRC).

Results: Intraclass correlation coefficients ranged from 0.82 to 0.96. The standard errors of measurement at 6 and 12 weeks postop, respectively, were: 30CST ±0.67 and ±0.79, 10MWT ±1.05 and ±0.57. Minimal detectable changes (90% confidence level) were: 30CST ±1.56 and ±1.84, 10MWT ±2.43 and ±1.32. Correlations between change in PBOM and GRC ranged from -0.16 to 0.34.

Conclusions: These results support the reliability, validity and clinical use of the 30CST and 10MWT during rehabilitation following TKA.

Summary for Lay Audience

Rehabilitation is important to achieve optimal results following total knee arthroplasty (TKA). The goal of rehabilitation is to maximize functional independence. One method to assess outcomes is to select appropriate measures that quantify improvements in physical function. Performance-Based Outcome Measures (PBOM) of physical function are more likely to exemplify a change in function than self-report measures alone. This thesis evaluated the measurement properties of the 30-Second Chair Stand Test (30CST) and 10-Metre Walk Test (10MWT) in patients following total knee arthroplasty. The results of the study support the reliability, validity, and clinical use of the 30CST and 10MWT during rehabilitation following surgery. Integrating reliable and valid PBOM into clinical practice is essential for patients, physiotherapists, and surgeons to measure change in function during rehabilitation. This protocol may ultimately assist with clinical decision-making and guide best practice.

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