The goal of this clinical trial is to compare the effects of electrical dry needling versus glucosamine sulfate iontophoresis on pain intensity level, functional ability, and knee range of motion in chronic unilateral knee osteoarthritis patients.
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Pain intensity level measurement
Timeframe: at baseline and after 6 weeks
Functional ability measurement
Timeframe: at baseline and after 6 weeks
Knee ROM measurement
Timeframe: at baseline and after 6 weeks