Though nail changes accompany many conditions, these changes are rarely the first sign.
虽然指甲变化伴随许多情况，但作为首发体征罕见。
Objective: To analyze the biomechanical changes of interlocking nails and the position of nail where fatigue fragmentation happens easily.
目的：测定股骨交锁髓内钉锁钉的生物力学变化，分析易发生疲劳断裂的锁钉位点。
Objective: To observe the changes of nail fold microcirculation and explore the relation between the allergic purpuric nephritis (APN) in children and blood stasis syndrom.
目的：通过观察甲皱微循环的变化，探讨小儿过敏性紫癜性肾炎与中医血瘀证的关系。
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