Our study findings provide evidence that 30 to 45 minutes of
TENS on a patient with osteoarthritic knee reduces pain intensity
at rest and during walking while the stimulation was producing
a strong, nonpainful TENS sensation. Our findings provide tentative
evidence that TENS at the knee at sites of low resistance is more
efficacious for pain relief than at sites randomly chosen. The site
of TENS did not appear to affect functional outcomes during stimulation.
There was some evidence that the efficacy of TENS may depend
on whether participants were lying still or walking.