Personalized walking adjustments cut knee arthritis pain and slow cartilage loss

In a randomized, placebo-controlled study published in The Lancet Rheumatology, investigators examined whether a customized change in foot orientation during walking could reduce knee osteoarthritis symptoms. Sixty-eight volunteers with medial compartment disease underwent baseline MRI and gait analysis, then were assigned to either a personalized gait-retraining program or a sham protocol. Over six weeks, participants received biofeedback via shin-mounted devices while walking on a sensor-equipped treadmill, learning to maintain the prescribed toe angle.

One year later, the intervention group reported an average pain reduction of 2.5 points versus 1.3 points for controls, and MRI-derived T1rho values indicated slower cartilage degradation. No serious adverse events occurred, though a few participants withdrew due to increased pain. The authors suggest that, if delivered outside research labs using mobile sensors or smart shoes, this low-cost biomechanical approach could complement existing therapies for knee arthritis.