- In a medical study reported in the JAMA, it was noted that: A brace that limits extension and forearm rotary motion and supports the elbow gave relief in 80% of cases in which other conservative methods of treatment had failed....This slight flexion of the elbow seems to relax the muscles and lessen the strain on the elbow joint. For additional information, please contact: SWB Elbow Brace, Ltd.SWBELBOWBRACE.COM