Abstract
Total knee arthroplasty (TKA) is the most common treatment for degenerative osteoarthritis of that articulation. However, either in rehabilitation clinics or in hospital wards, the knee range of motion (ROM) can currently only be assessed using a goniometer. In order to provide continuous and objective measurements of knee ROM, we propose the use of wearable inertial sensors to record the knee ROM during the recovery progress. Digitalized and objective data can assist the surgeons to control the recovery status and flexibly adjust rehabilitation programs during the early acute inpatient stage. The more knee flexion ROM regained during the early inpatient period, the better the long-term knee recovery will be and the sooner early discharge can be achieved. The results of this work show that the proposed wearable sensor approach can provide an alternative for continuous monitoring and objective assessment of knee ROM recovery progress for TKA patients compared to the traditional goniometer measurements.
Highlights
Osteoarthritis of the knee is a degenerative disease that greatly impacts the activities of daily living (ADLs) and the quality of life of the elderly
We aimed to propose a method to conduct the data collection and data analysis for monitoring the recovery progress of knee range of motion (ROM) on Total knee arthroplasty (TKA) patients by using wearable sensors
The results showed that the monitoring mechanism reveals that the knee ROM can be restored to the initial level before surgery
Summary
Osteoarthritis of the knee is a degenerative disease that greatly impacts the activities of daily living (ADLs) and the quality of life of the elderly. By using artificial implants to replace the damaged knee joint, the knee functions can be regained. In the United States, nearly 1.5% of Americans are living with a knee replacement, and for people aged over 50 years old the prevalence of TKA is up to 4.6% [1]. The most important goal of TKA is to obtain postoperatively a maximized and function-regained range of motion (ROM) of the knee joint. During their recovery many TKA patients suffer from knee stiffness and reduced knee flexion of less than 90◦. The recommended knee ROM recovery for performing ADLs is at least 100◦ of knee
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