孩子在使用折刀时,割伤手掌并不少见,也有的是因为砸碎玻璃后割伤了手掌。伤口不大,流血不多,只是手指不会弯了。这是为什么呢? 手掌的皮肤与掌骨之间主要是数条管屈曲手指的肌腱,没有丰富的肌肉,肌腱像筷子粗细,因此,即使伤口很小,只要切到肌腱,断裂后两端分离,肌肉再收缩时就牵动不着远端的肌腱了,自然手指就不会动了。 It is not uncommon for a child to cut his or her palm when using a folding knife, or because he has cut the palm of his hand after smashing the glass. The wound is not large, little bleeding, but the fingers will not bend. This is why? Between the palm of the hand and the metacarpal palm is the main number of tendons tendon flexor fingers, there is no rich muscle tendon like chopsticks thickness, so even if the wound is small, as long as cut to the tendon, the two ends after fracture separation, When the muscle contractions do not affect the distal tendon, natural fingers will not move.