儿童在日常生活中砸着脚是很常见的,例如在家中被熨斗、花盆等较重的东西砸脚;在户外遇到大石头滚来或翻车等情况,躲闪不及,大脚趾处于人体的最前边,首当其冲往往受到伤害。砸伤时剧疼难忍,而且逐渐加重,尤其趾甲下最疼,感到跳疼不止,趾甲也逐渐变黑,几个月才好。脚趾骨都是短杆状的,两头差不多。唯独脚尖部的末节趾骨两头不一样,远端逐渐变细,但是不尖,反而膨大成一个不太规则的扁圆形,叫做爪粗隆(如图)。爪粗隆是松质骨,没有趾骨近端皮质骨那样结实,被砸骨折时虽然其背面有坚韧的趾甲保护,不会离开原位,但是正因为趾甲的限制,骨折处出血、肿胀、向四周扩展受阻碍,所以疼痛特别厉害。趾骨下的皮肤称为甲床,与脚趾肚儿的皮肤连着。爪粗隆骨折若有甲下积血,说明甲床有破裂。正常的趾甲与甲床是贴得很近的,但是却没有组织连系,只是挨 It is very common for children to hit their feet in daily life, for example, they are hit by heavy objects such as irons and flower pots at home; when they encounter heavy boulders or rollovers in the outdoors, they can not dodge, their big toes are in the human body Forefront, bear the brunt of often hurt. Injury painful unbearable, and gradually increased, especially under the most painful toenails, feeling more than a pain, toenails are also gradually black, a few months to be good. Bone toe are short rod-shaped, almost two ends. Only tip of the distal phalanges are not the same two ends, distal tapering, but not sharp, but expanded into a less regular oblate, called the paw trilobata (pictured). Claw trochanter is cancellous bone, not as strong as the proximal phalanges of the phalanges, was fractured fractured although the back of a tough toenail protection, will not leave the place, but because of nail limitations, fracture bleeding, swelling, to All around the expansion of obstruction, so the pain is particularly powerful. The skin under the phalanges is called a nail bed, attached to the skin of the toe belly. Paw femoral fractures, if a hematoma, that nail bed rupture. Normal nail and nail bed is very close, but there is no organizational link, just suffer