基節骨 - Phalanx proximalis
Proximal phalanges are on the first row of the phalanges of the foot. The body of each is compressed from side to side, convex above, concave below. The base is concave; and the head presents a trochlear surface for articulation with the second phalanx.
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
一般解剖学 > 骨、骨格系 > 付属肢骨格 > 下肢骨 > 自由下肢 > 足の骨 > 趾(指)骨；趾(指)節骨 > 基節骨