Metacarpophalangeal joint

anatomical structure

The metacarpophalangeal joints (MCP) are between the bones in the hand at the palm called metacarpals, and the first finger bones called proximal phalanges.

Metacarpophalangeal joint
Grant 1962 104 MCP.png
The palme side of the hand showing the bones and joints spread out. MCP joints in red.
Gray337.png
Details
System099
Identifiers
MeSHD008662
TAA03.5.11.501
FMA35246
Anatomical terminology

The palm bones have rounded ends, and the finger bone ends are shaped like caves. This helps the two bones fit together like a puzzle.

StructureEdit

LigamentsEdit

 
MCP joint movements, bottom of hand view.