Physical Modalities — Heat, Cold, Ultrasound, Diathermy, Electrical Stimulation, Iontophoresis, Traction, and Biofeedback

A 55-year-old male presents to the outpatient rehabilitation clinic with chronic left knee pain, significantly worsened after a fall three months ago. He describes constant aching pain, stiffness, and difficulty ascending stairs, impacting his ability to work as a carpenter.