这块脚骨属于第四跖骨（fourth metatarsal）或足中段骨（midfoot bone），表明固定脚弓（foot arch）保存在南方古猿阿法种（Australopithecus afarensis）。
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Normal foot arch 正常脚形
kick with foot-arch 脚正背踢球
Mid Foot Arch 足中段拱形
service with foot arch 正脚背发球
foot arch pain 足弓疼痛
Foot-arch 足弓
foot arch index 足弓指数
arch of the foot 足弓 ; 脚弓
arch of foot 足弓 ; 足底弓 ; 脚弓
Conclusion Anatomic reduction and stable internal fixation is the best solution for the fifth metatarsal dislocated fracture,which is the key point for recovery of foot form and foot arch function.
结论第5跖骨骨折的解剖复位和确切内固定是维持足部正常形态、恢复足弓功能的关键。
参考来源 - 第五跖骨骨折的手术治疗·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper used foot arch index to investigate the growth of the foot arch of infants, children and juveniles.
本文采用较能客观反映真实足弓的指标——足弓指数，对幼儿、儿童和少年足弓发育情况进行研究。
At the same time, with a slow hand, coherent, relaxing massage feet before the foot arch, behind, until the fever so far.
同时，用手缓慢、连贯、轻松的按摩双脚，先脚背后脚心，直至发热为止。
The bending behavior of foot arch and the axial behavior of the vault are obviously differ form the typical steel truss arch.
部分填充混凝土钢箱桁拱桥拱脚段受弯规律、拱顶段轴向受力规律与钢箱桁拱差异明显。
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