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A Physical Therapist-Administered Physical Activity Intervention After Total Knee Replacement: Protocol for a
Meredith B Christiansen1, Louise M Thoma2, Hiral Master3
1Department of Physical Therapy and Department of Biomechanics and Movement Science, University of Delaware, Newark, Delaware.
Physical Therapy
|April 3, 2018
Summary
This study introduces a new physical therapist-led program to increase physical activity (PA) after total knee replacement (TKR). The goal is to improve patient outcomes and support larger clinical trials.
Area of Science:
- Orthopedics
- Rehabilitation Medicine
- Physical Therapy
Background:
- Total knee replacement (TKR) improves pain and function in knee osteoarthritis patients.
- Physical activity (PA) levels often do not increase post-TKR.
- A need exists for interventions to boost PA after TKR.
Purpose of the Study:
- To assess the efficacy, fidelity, and safety of a physical therapist-administered PA intervention for TKR patients.
- To provide a protocol for future large-scale clinical trials.
Main Methods:
- A randomized controlled trial involving 125 participants over 45 undergoing unilateral TKR.
- Intervention group received standard physical therapy plus a weekly PA program (wearable tracker, step goals, therapist feedback).
- Control group received standard physical therapy alone.
Main Results:
- Efficacy measured by moderate to vigorous PA (minutes/week) at multiple time points.
- Fidelity and safety assessed throughout the study.
- Data collected post-randomization; participants not masked.
Conclusions:
- The study presents a protocol to investigate a PA intervention for TKR patients.
- Findings will inform a larger multisite trial on intervention effectiveness, implementation, and cost.
- The ultimate aim is to increase PA levels after TKR.
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