双峰驼指关节解剖

DISSECTION OF DIGITAL JOINTS OF THE BACTRIAN CAMEL

运用大体解剖学方法对双峰驼三十个指关节进行解剖研究,发现如下特征:籽骨间韧带只连接同一指上的两枚籽骨,无连于籽骨与对侧近指节骨近端的指关节籽骨韧带,也无籽骨直韧带;第二指近指节骨与第四指的近指节骨之间无韧带连接;近指节间关节缺掌侧韧带;远指节无远籽骨,但有软骨板,还有一对背侧韧带。

Ten metacarpo-phalangeal, 10 proximal interphalangeal, and 10 distal interphalangeal joints were dissected and studied. The structure of the metacarpo-phalangeal, proximal interphalangeal, distal interphalangeal joints was similar to that of the pelvic limbs'. The intersesamoid lig. only with the 2 sesamoid bones of the same digit. The phalangeo-sesamoid lig.connected the proximal sesamoids with the proximal end of the opposite proximal phalanx. There was no in terdigilal lig. joining proximal phalanges of the third and fourth digits. No palmar lig. was present in the proximal interphalangeal joint;in the distal interphalangeal joint, there was no distal sesamoid bone, in stead of which a plate of cartilage was present, and in this joint, there was a pair of dorsal lig., the axial one of which consisted chiefly of elastic fibres.