Background: Evidence that knee braces used for the treatment of osteoarthritis mediate pain relief and improve function by unloading the joint (increasing the joint separation) remains inconclusive.

• 背景：治疗骨关节炎的膝关节支具对于减少关节负荷（增大关节间隙）以缓解疼痛和改善功能的作用仍无定论。