Knee support is a type of medical device used to provide stability and reduce pain in the knee joint. The most common form of knee support is a BRACE, which is a band or strap that wraps around the knee to provide compression and support. Braces can be used to treat a variety of knee conditions, including arthritis, tendonitis, and sprains. They can also be used to prevent injuries during physical activities. Knee braces are available in a variety of sizes and styles, and can be custom-fitted for optimal comfort and support.