THE PLANTAR PLATE OF THE LESSER TOES - AN ANATOMICAL STUDY IN HUMAN CADAVERS
THE PLANTAR PLATE OF THE LESSER TOES - AN ANATOMICAL STUDY IN HUMAN CADAVERS
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DOI：
10.1177/107110079401500508
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发表时间：
1994-05-01
影响因子：
2.7
通讯作者：
DANIELS, T
中科院分区：
文献类型：
--
作者：
JOHNSTON, RB;SMITH, J;DANIELS, T
本研究的目的是评估小脚趾足底板的解剖结构和生化成分。用新鲜冷冻人尸足研究20个跖趾和近端指间跖板。足部解剖的观察结果与手指掌侧板进行了比较。脚趾的足底板是一个矩形结构，具有坚固的远端插入和相对脆弱的近端起源。手指掌侧骨板和足趾跖侧骨板与相邻结构的解剖关系和组成相似。已知足底板经受掌侧板不经受的伸展力。足部的承重性质和脚趾离地所施加的力可能造成跖趾关节的慢性过度伸展，并使足底板易于变薄或破裂，从而导致跖趾关节不稳定。这些发现可以部分解释自发性跖趾关节脱位的临床状况，最常见于第二趾。
The purpose of this study was to evaluate the anatomic structure and biochemical composition of the plantar plate of the lesser toes. Fresh frozen-human cadaveric feet were used to study 20 metatarsophalangeal and proximal interphalangeal plantar plates. The observations of foot dissections were compared with the finger volar plate.The plantar plate of the toe is a rectangular structure with a stout distal insertion and relatively flimsy proximal origin. The anatomic relationships to adjacent structures and composition are similar between the volar plates of the fingers and plantar plates of the toes. The plantar plate is known to experience extension forces that the volar plate does not experience. The weightbearing nature of the foot and forces imposed by toe-off may create chronic hyperextension of the metatarsophalangeal joint and predispose the plantar plate to attenuation or rupture, thus leading to instability of the metatarsophalangeal joint. These findings may explain in part the clinical condition of spontaneous metatarsophalangeal joint dislocation, most commonly found in the second toe.