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Effectiveness of modified quadriceps femoris muscle setting exercise for the elderly in early rehabilitation after total knee arthroplasty
Park D, Kim J, Lee H
Journal of Physical Therapy Science 2012 Jan;24(1):27-30
clinical trial
5/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

PURPOSE: This study examined the effects of a conventional quadriceps setting exercise (CQS) and a modified quadriceps setting exercise (MQS) on the strength of the quadriceps femoris, hamstring and gluteus maximus muscles, and the walking ability of elderly persons with osteoarthritis (OA) during their early rehabilitation after total knee arthroplasty (TKA). SUBJECTS: The subject of this study were 44 elderly women aged 65 or over who were scheduled to undergo TKA on one knee and who voluntarily consented to participate in this experiment after listening to its purpose and method. We divided the subjects into an experimental group (n = 22) who performed MQS and a control group (n = 22) who performed CQS. METHODS: We measured subjects' muscle strength and conducted the 6-minute walk test (6MWT) before surgery, 2 weeks after surgery, and 4 weeks after surgery. RESULTS: Changes in the strength of the hamstring and gluteus maximus muscles were significantly different between the two groups. CONCLUSION: MQS may enhance the strength of the hamstring as well as gluteus maximus muscles and is considered an appropriate exercise for the elderly in their early rehabilitation after TKA.

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