Braces and splints are useful for chronic and acute conditions alike. They can also be used for prevention of injury. There is much scientific evidence that supports the use of braces and splints.
The unloader (valgus) knee brace is often used for pain reduction in people with osteoarthritis of the medial compartment of the knee. These braces are designed to apply an outside (external) force to reduce the load on the medial (central) knee compartment, which reduces pain. Improved joint proprioception also helps to relieve pain. In a study involving 120 patients with knee osteoarthritis and varus deformity, researchers found that the unloader knee brace helped relieve pain and improve functional status. The benefits of this brace were found to be greater than a hinged brace.