The Effect of a Single Session of Transcutaneous Electrical Nerve Stimulation on Weight Bearing Asymmetry during Squatting in People with Knee Osteoarthritis

Seher Özyürek, İlkşan Demirbüken, Salih Angın


Objective: The aim of this study was to investigate the effect of a single session of TENS on weight bearing asymmetry (WBA) during squatting in people with knee osteoarthritis (OA).
Material -Method: Using a retrospective analysis of prospective study design, twenty five patients (6M/19F) with unilateral knee OA included in the study. Prospectively recorded data were obtained retrospectively from the physiotherapy evaluation forms of patients who received a single session of 40-minute TENS intervention to the affected knee. Knee pain intensity was assessed with Visual Analog Scale (VAS). WBA values during standing and squatting (30°, 60°, and 90° of knee flexion) were collected in 3 stages: before the TENS intervention (baseline); immediately after TENS intervention; and 24 hours after TENS intervention.
Results: Significant difference was found for WBA values at 30°of squatting after TENS intervention (p<0.05). Reported pain intensity both in immediately after and 24 hours after TENS interventions decreased significantly compared with baseline scores (p<0.001).
Conclusion: Single session of TENS intervention controls knee pain and people with knee OA can present squatting with improved inter-limb weight bearing distribution after TENS intervention.

Keywords: Knee osteoarthritis, Pain, Squatting, Transcutaneous electrical nerve stimulation, Weight bearing asymmetry.