A recently published study has unveiled a promising non-surgical intervention for individuals suffering from knee osteoarthritis, a leading cause of disability worldwide. Researchers from institutions including New York University, the University of Utah, and Stanford University discovered that making a small adjustment to the angle of one’s foot while walking can reduce knee joint stress, ease pain, and potentially delay the need for knee replacement surgery by years.
The study, published in The Lancet Rheumatology, involved 68 participants with mild to moderate knee osteoarthritis. Using advanced gait analysis and MRI scans, researchers identified each individual’s optimal foot positioning—either slightly inward or outward from their natural stance—that minimized loading on the medial (inner) compartment of the knee, the area most commonly affected by arthritis.
Participants trained in six sessions to walk using this personalized foot angle and were monitored over a year. Results showed a 4% reduction in maximum knee load and a 2.5-point decrease in pain on a 10-point scale, akin to relief obtained from over-the-counter pain medications. Importantly, MRI scans revealed slower cartilage degeneration in those who adopted the modified gait compared to those who continued walking normally, who actually showed increased knee loading and cartilage damage.
This tailored approach contrasts with prior studies that prescribed a uniform foot angle adjustment for all patients, which yielded inconsistent results. Instead, the individualized method better addresses the unique biomechanics of each patient’s gait and joint stress patterns.
Experts highlight the significance of these findings because osteoarthritis currently has no cure, with treatment options focused largely on symptom management and eventually surgery. Knee replacement surgeries are not only costly but carry risks and often require revision surgeries after several years. An accessible, low-cost biomechanical therapy like gait retraining could therefore offer a valuable option to reduce reliance on medications and delay surgery.
The study’s researchers also point to advances in AI technology that could simplify gait analysis using smartphone videos, enabling wider adoption of personalized walking interventions without need for specialized lab equipment.
While further research is needed to confirm these results and explore broader applications, this study offers new hope to millions living with knee osteoarthritis—that a small change in how they walk may provide lasting relief and enhanced mobility without invasive procedures.
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