Knee osteoarthritis (KOA) is a chronic progressive disease that imparts substantial socioeconomic burden to society and healthcare systems. The prevalence of KOA has dramatically risen in recent decades due to consistent increases in life expectancy, and demand for joint replacement continues to rise. Total knee replacement is indicated for end-stage KOA, as it is very effective in terms of pain relief, improvement of function, and quality of life. However, the investigators will be facing an unsustainable joint replacement burden, with significant healthcare budget and health workforce implications. To alleviate this problem, different strategies including reinforce the importance of education and exercise are included; as previous studies showed that less than 40% of patients with KOA received non-pharmacological treatment, indicating that the uptake of evidence-based guidelines in clinical practice and rehabilitation is still suboptimal. Several literatures revealed that quadriceps and hamstrings strength exercise could effectively reduce pain. It has widely accepted that patients with end stage KOA will eventually pursue total knee replacement as the only viable option, and exercise has low efficacy in reduction of pain and disability in this group of patients. So, the investigators would like to know whether exercise therapy can help severe KOA patients
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
517
10 minutes of whole-body vibration when performing semi-squatting or forward lunges (12-16 Hz, varying intensity from low to high depending on patients' tolerance
Four to five sessions of a physiotherapist-led exercise program with education talk (20 minutes), group exercises (30 minutes) and individual exercises (30 minutes) per week supplemented with home exercises
Michael.Ong@Cuhk.Edu.Hk
Hong Kong, NEW Territories, Hong Kong
Numerical pain rating scale
Pain assessment. Minimum value = 0, Maximum value = 10; the higher the score the worse the pain level
Time frame: Baseline, 8 weeks
Range of motion (ROM) of the diseased knee
Measure the angle of knee bending from straight (0 degree) to fully bended (180 degrees)
Time frame: Baseline, 8 weeks
Gait analysis
Measure the movement of legs from point A to B, measure the distance in cm between steps walking on a flat surface
Time frame: Baseline, 8 weeks
Knee Society Score
Score from 0 to 100. Lower scores being indicative of worse knee conditions and higher scores being indicative of better knee conditions.
Time frame: Baseline, 8 weeks
Knee Society Functional Assessment
Score from 0 to 100. Lower scores being indicative of worse knee conditions and higher scores being indicative of better knee conditions.
Time frame: Baseline, 8 weeks
Knee injury and Osteoarthritis Outcome Score (KOOS)-Knee pain (KP)
Score from 0 to 100. 0 representing extreme knee problems and 100 representing no knee problems.
Time frame: Baseline, 8 weeks
Knee injury and Osteoarthritis Outcome Score (KOOS)-Other Symptoms (S)
Score from 0 to 100. 0 representing extreme knee problems and 100 representing no knee problems.
Time frame: Baseline, 8 weeks
Knee injury and Osteoarthritis Outcome Score (KOOS)- Activities of Daily Living (ADL)
Score from 0 to 100. 0 representing extreme knee problems and 100 representing no knee problems.
Time frame: Baseline, 8 weeks
Knee injury and Osteoarthritis Outcome Score (KOOS)-Sport and Recreation function
Score from 0 to 100. 0 representing extreme knee problems and 100 representing no knee problems.
Time frame: Baseline, 8 weeks
Knee injury and Osteoarthritis Outcome Score (KOOS)-knee-related Quality of Life (QOL)
Score from 0 to 100. 0 representing extreme knee problems and 100 representing no knee problems.
Time frame: Baseline, 8 weeks
Timed Up and Go test
Score from 1 to 5. 1 indicates "normal function" and 5 indicates "severely abnormal function"
Time frame: Baseline, 8 weeks
30-sec chair stand test
Score as 3-tier categories. Below Average; Average; Above Average. Sex- and age range-specific. "Below average" indicates a high risk of falls.
Time frame: Baseline, 8 weeks
Functional reach test
In standing, measures the distance between the length of an outstretched arm in a maximal forward reach; 10"/25 cm or greater: Low risk of falls; 6"/15cm to 10"/25cm: Risk of falling is 2x greater than normal; 6"/15cm or less: Risk of falling is 4x greater than normal; Unwilling to reach: Risk of falling is 8x greater than normal
Time frame: Baseline, 8 weeks
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