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踝关节的结构: 踝关节是由胫骨、腓骨、距骨组成的一个叉状关节窝和以距骨上方滑车关节面为关节头而连结成一个滑车关节(又称距上关节),关节束附着关节软骨周围。这个关节只有一个运动轴,绕额状轴作曲伸运动(足向下为曲称跖曲,足向上为伸称背伸)。由于距骨的滑车关节面前宽后窄,当足曲时滑车关节面较窄的部分未能填满关节窝(窝大头小存有空隙),因而踝关节可以绕矢状轴作微小的外展和内外运动。由于距骨是前宽后窄,当踝关节背伸时距骨体前部进入踝穴较稳定(距骨关节窝),不能向两侧摇摆活动,踝关节跖曲
Ankle structure: the ankle is a tibia, fibula, talus composed of a forked joint and the talus above the tackle joint surface as a joint head to form a pulley joint (also known as the supramaxillary joint), the articular cartilage attached to articular cartilage around. This joint has only one axis of motion, around the frontal axis for bending movements (feet down for the song said plantar flexion, the foot upward extensor). Due to the talus width and width of the talus’s articulation, the narrower portion of the articulation of the trochlea can not fill the joint socket (there is no gap in the big head), so the ankle joint can make minor abduction around the sagittal axis Inside and outside exercise. As the talus is wide and narrow before the ankle dorsal anterior talus into the ankle more stable (talus socket), can not swing to both sides of the activity, ankle plantar flexion