Intra-articular injury refers to acute and chronic trauma o f such joint structures as bone, cartilage and intra-articular soft tissues: li gament,cartilage disc and synovium.

• 关节内损伤指涉及关节结构的骨、软骨和关节内软组织包括韧带、软骨盘、滑膜等的急性或慢性损伤。