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  • Title: The effects of preoperative neuromuscular electrical stimulation on the postoperative quadriceps muscle strength and functional status in patients with fast-track total knee arthroplasty.
    Author: Şavkin R, Büker N, Güngör HR.
    Journal: Acta Orthop Belg; 2021 Dec; 87(4):735-744. PubMed ID: 35172441.
    Abstract:
    This study aimed to investigate the effect of pre- operative neuromuscular electrical stimulation (NMES) on postoperative quadriceps muscle strength, functional status, and quality of life in patients with fast-track total knee arthroplasty (TKA). This prospective study was carried out at Orthopedics department from September 2017 to October 2018. A total of 40 patients were randomly divided into NMES (n=20) and control group (n=20). Patients in NMES group were asked to use home NMES device daily for 20 minutes, 5 times a day, for 6 weeks before surgery. The control group was placed on the 6-week waiting list for surgery without any preoperative intervention. Standard home exercise program was applied to both groups after discharge. The patients were evaluated baseline, preoperatively (6-weeks after baseline) and at the 4th and 12th weeks after surgery. Knee range of motion, quadriceps muscle strength, patient-reported (WOMAC and KOOS) and performance-based activity limitation (30-second chair-stand test, 40-meter fast-paced walk test, and stair-climb test) were evaluated at each visit. Preoperative NMES resulted in significant improvement in KOOS-function in daily living and WOMAC total score (p≤0.05) but had a non-significant trend toward to improve quadriceps muscle strength, KOOS-pain and -other symptoms, performance- based activity limitation, and quality of life scores (p>0.05). However, there was no significant difference between groups in the postoperative period (p>0.05). NMES has beneficial effects in terms of patient- reported and performance-based physical functions and quality of life in preoperative period ; however, it does not provide any additional benefit for post- operative outcomes in patients with fast-track TKA.
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