The effect of neuromuscular electrical stimulation on functional status and quality of life after knee arthroplasty: a randomized controlled study

[Purpose] The aim of this study was to investigate the effect of the addition of NMES tothe post-TKA rehabilitation protocol on the functional status and quality of life of thepatients. [Subjects and Methods] Patients were randomized into an exercise (control) andelectrical stimulation (NMES) group. A home exercise program was prescribed for thecontrol group. For the neuromuscular stimulation group 30 minute electrical stimulationapplied to the vastus medialis muscle 5 days a week for 4 to 6 weeks. VAS, the timed upand go test, WOMAC and SF-36 scores were evaluated preoperatively and postoperatively atthe first month and the third month of the follow-up period. [Results] Both the NMES grouphad 30 patients each, with 2 and 1 male patients respectively. The comparisons of WOMACresults at month 1 revealed that pain, stiffness, and total scores of the NMES group wassignificantly better than those of control group at the first and third months.Significantly better physical function and SF-36 subscales, except mental health, werefound for the NMES group at the first month of follow-up. [Conclusion] The inclusion ofthe neuromuscular electrical stimulation program after knee arthroplasty was moreeffective at providing rapid improvements in knee pain, walking distance and quality oflife.Key words: Quadriceps muscle, Knee joint, Arthroplasty