Pregabalin Phonophoresis and MET for Knee Osteoarthritis

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Knee osteoarthritis (OA) is a common condition causing pain, stiffness, and difficulty walking. Many patients with advanced (Grade III) knee OA also experience neuropathic pain - burning, tingling, or electric shock sensations - which is harder to treat with standard physiotherapy. Oral pregabalin works for neuropathic pain but causes side effects like dizziness and drowsiness. This study tests whether delivering pregabalin through the skin using ultrasound (phonophoresis), combined with calf muscle stretching (Muscle Energy Technique), can reduce nerve pain and improve walking better than ultrasound alone.