体格检查呈高腭弓，双手轮替动作试验、跟-膝-胫试验和指鼻试验均不能完成，并有锥体束征；
Physical examination: the patient can not complete both hands alternating movement test, heel-knee-tibia test, and finger-nose test, and presented pyramidal sign.
目的分析踝关节内、外侧结构和胫腓下联合损伤对踝关节稳定性的影响，探讨胫腓下联合固定的指征。
Objective To evaluate factors which maintain the stability of the ankle, and discuss indications for trans-syndesmotic fixation.
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