Effect of Knee Orthosis and Kinesio Taping on Clinical and Neuromuscular Outcomes in Patients with Knee Osteoarthritis: A Randomized Clinical Trial.

Objectives: Impaired proprioception and muscle weakness may not only be a consequence of knee osteoarthritis (OA) but also part of its pathogenesis. Thus, the enhancement of quadriceps strength and proprioceptive accuracy can play a pivotal role in the management of knee OA. This study aimed to investigate the effects of Kinesio tape and flexible knee orthosis in terms of clinical and neuromuscular outcomes in patients with knee OA. Methods: This clinical trial was conducted on 56 patients with knee OA, randomly allocated to two groups: knee orthosis or Kinesio tape. The knee orthosis group wore a neoprene knee support for 4 weeks. For participants in the Kinesio tape group, tape was applied once a week, for 4 weeks. The primary outcomes were pain intensity and physical function evaluated through the visual analog scale and the Western Ontario and McMaster OA index. The secondary outcomes were concentric and isometric quadriceps strength, Joint Position Sense (JPS), Threshold to Detect Passive Motion (TTDPM), and force sense (FS), all measured by isokinetic dynamometry. Results: All outcome measures were significantly improved in the orthosis group. The Kinesio tape group also demonstrated significant changes in all outcome measures except three proprioception components namely JPS (70° target), FS, and TTDPM. At the end of the fourth week, there were no significant between-group differences for measured parameters. Conclusion: Wearing a flexible knee orthosis and/or Kinesio tape for 4 weeks significantly improved knee pain, physical function, and quadriceps strength. Although knee orthosis showed significant beneficial effects on various components of proprioception, there were no significant differences between the two groups at the end of the 4-week intervention.