Related Experiment Video
Updated: Jan 19, 2026
Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
Improved levels of physical activity in patients over 75 years following total knee arthroplasty
Yuriko Matsunaga-Myoji1,2, Kimie Fujita2, Shuya Ide3
1Division of Nursing, Faculty of Medicine, Saga University, Saga, Japan.
Purpose:
There is insufficient evidence regarding the precise levels of physical activity (PA) in older patients following total knee arthroplasty (TKA). The aims of this study were (1) to describe the changes in the amount and intensity of PA before and after TKA with an accelerometer in older patients, compared with age- and sex-matched healthy participants and (2) to assess the effect of TKA on PA depending on age.
Methods:
Sixty-six primary TKA patients aged 60 years or over (mean age, 73.3 years) wore an accelerometer (Lifecorder EX) for 10 consecutive days and completed the Oxford Knee Score (OKS) before and at 6 months after TKA. PA was evaluated by mean step count and time spent (min) engaged in PA per day. PA intensity was classified as light (1.5-3 metabolic equivalents (METs)), moderate to vigorous (≥3 METs), and total (≥1.5 METs). Sixty-four healthy participants completed a single assessment of PA.
Results:
Each of the PA measures and OKS increased significantly after TKA. Compared with healthy controls, light and total PA improved to 100% at 6 months after TKA in patients 75 years or older. By contrast, moderate-to-vigorous PA was 32% of that of the controls and rose to 78% after TKA. PA intensity in patients aged 60-74 years was 31-74% of the controls but did not reach the same level after TKA.
Conclusion:
TKA in older patients increases the amount of PA, with light and total PA suitable parameters for assessing PA.
Related Concept Videos
10:10Reverse Total Shoulder Arthroplasty
09:31Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
05:59Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
09:51Using Point of Care Ultrasound to Augment Acquisition of Physical Exam Skills: Knee and Shoulder
Point of Care Ultrasound or POCUS is easy to use, has enhanced mobility due to the smaller equipment needed, and may be carried out in a variety of settings. It is also far safer and cheaper than imaging techniques like computer tomography.
POCUS can be helpful when certain physical exam findings are difficult to appreciate by palpation, percussion, or auscultation and can facilitate learning elements of the cardiac, pulmonary,...
07:33In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
07:22Glycemic Impact on Knee Osteoarthritis Symptoms on Physical, Radiographic, and Inflammatory Markers among Individuals Aged 50 and Over with Diabetes