Head of 3rd Metacarpal

Bone

• 3rd Metacarpal

Attaching Structures as Origin

• Collateral Ligaments of the 3rd MCP - Tubercle and Adjacent Depression on the Metacarpal
• Collateral Ligaments of the 4th MCP - Tubercle and Adjacent Depression on the Metacarpal

Joints

• 3rd Metacarpophalangeal Joint (3rd MCP)