人体有许多大大小小的骨骼。骨骼是人体的支架,也是生命器官的护罩。这些形状各异的骨头由关节联系了起来,使骨骼可以充分伸展、屈曲、旋转。从解剖上看,两个接触的骨端构成关节,外周有关节囊,并有韧带及肌肉保持关节的联系和稳定。关节面 The human body has many large and small bones. Bone is the body’s support, but also the shield of vital organs. These various shapes of bones are connected by joints, allowing the bones to fully stretch, flex and rotate. From the anatomical point of view, the two contact bone ends constitute the joints, peripheral joint capsule, and ligaments and muscles to maintain joint contact and stability. Articular surface