This study examines if people with knee osteoarthritis (a disease causing joint pain and swelling) can change how they use their calf muscle while walking with the help of a special feedback called haptic biofeedback. Haptic feedback is a way to guide people by touch, such as vibrations. By learning to use their gastrocnemius muscle (a major calf muscle) differently, participants may reduce stress on their knees. They will practice this in up to three sessions, each lasting 30 minutes, with walking and feedback. If changes are successful, participants will try their new walking style in a real-world setting. The movement data will help in creating computer models of the body to see if this method helps reduce knee loading.

• Participants must have knee osteoarthritis for at least six months and must be able to walk unaided.
• No history of arthritis in other joints, recent surgeries, or severe knee misalignment.
• The study involves up to three 30-minute walking sessions, with feedback, to adjust muscle use.