指,趾骨滋养孔的观察

对不分性别的指骨和趾骨共２４９１根的滋养孔的数目、位置和方向进行了研究。滋养孔几乎全部位于远侧２／３。近节指、趾骨有时存在滋养孔，其中大多位于或邻近两侧缘的掌／跖侧。滋养管几乎全部背离生长端。长骨异向滋养管是胚胎期近侧滋养动脉残留所形成。

AN OBSERVATION ON DIAPHYSIAL NUTRIENT FORAMINA IN HUMAN PHALANGES

1688 hand phalanges and 803 foot phalanges of unknown sex were studied for the number, position and direction of the nutrient foramina. It was found that each of these bones had one nutrient foramen at the two-thirds part of the distal shaft. Double foramina were occasionally found in the proximal phalanges of the fingers. Most of the foramina were situated on or close to the both borders of the palmar side. Almost all nutrient canals were directed away form the growing end. The anomalously directed canals, occasionally found in adult long bones, were a rudiment of the canals of the proximal nutrient artery of the fetus.