The most complicated joint is the most vulnerable to acute injury and development of osteo arthritis. Recover and prevent injuries faster with AT Surgical’a Pull-On Knee Brace. Say goodbye to strains, sprains, instability and patellar tracking in the knee while supporting and stabilizing injured, weak, or arthritic knees during occupational and sporting activities. Effectively relieves post-operative knee pain, strains, and arthritis. Metal hinges help protect knee providing medial and lateral support.