Is there any evidence that knee braces work?

Knee braces have long been used to help provide support, protection, warmth to enhance circulation (warmth), and to help increase one's functional abilities after suffering an injury.  Knee braces have been used by physicians as a conservative treatment approach for years to help patients return to full function after an injury.  There are different types of knee braces with features to provide the right amount of support and protection for particular types of knee injuries like an ACL partial tear vs. chondromalacia.  Consult with your physician first about your injury diagnosis and they will be able to recommend a knee brace that's best for your particular injury.