Monday Kids Human hand joint model hand bone ulna radius model human skeletal foot surgery

Hand bone model human hand joint
PVC material, hand-made string
Hand bones: including the wrist, metacarpal and phalanx.
1) Carpal bones: composed of 8 short bones, divided into two columns, the proximal column from the lateral side to the ulnar side: hand scaphoid, lunate, triangular and pea bone. The distal side is classified as a large angle bone, a small polygonal bone, a head bone and a hook bone. Each carpal bone constitutes an intercarpal joint with adjacent articular surfaces. The proximal scaphoid, lunate, and triangular bones form the joint head of the ankle joint and the joint surface of the lower end of the humerus.
2) metacarpal bones: a total of 5 pieces, from the lateral side to the ulnar side of the first to fifth metacarpal. The metacarpal bone belongs to the long bone, the proximal end is called the metacarpal bone, the adjacent carpal bone, and the distal end is called the metacarpal head, which is associated with the phalanx. When the fist is clenched, the metacarpal head is exposed to the skin.
3) phalanges offingers: a total of 14 pieces, the thumb is two sections, the 2 to 5 fingers are three sections, from the proximal side to the far side, the proximal phalanx, the middle phalanx and
Far knuckles. The proximal end of the phalanx is the bottom, the middle is the body, and the distal end is the pulley. There is no trochlear at the distal end of the distal phalanx, and there is a rough bulge on the palm surface, which is called the distal phalanx (a trochanter).