Electrotherapy techniques like Transcutaneous Electrical Nerve Stimulation (TENS), Ultrasound Therapy, and Interferential Therapy (IFT) play crucial roles in managing musculoskeletal conditions. TENS helps in pain relief by modulating nerve signals, Ultrasound Therapy accelerates healing by enhancing tissue repair, and IFT reduces inflammation and muscle spasms. In osteoarthritis, these modalities relieve pain, improve joint function, and reduce stiffness, while in soft tissue injuries, they promote healing and recovery, offering comprehensive solutions for musculoskeletal issues.