5th Metacarpal

Parent Structures

• Metacarpals

Bone Classification

• Long

Bony Features

• Base of 5th Metacarpal
• Head of 5th Metacarpal
• Shaft of 5th Metacarpal

Attaching Structures as Origin

• 4th Dorsal Interossei of the Hand - Lateral side
• Palmar Ligament of the 5th MCP - Attached to the Neck by the Joint Capsule

Attaching Structures as Insertion

• Opponens Digiti Minimi - Medial Half of the Palmar Surface

Associated Joints

• 5th Metacarpophalangeal Joint (5th MCP)
• Common Carpometacarpal Joints

Structures Attaching to Bony Features as Origin

• Base of 5th Metacarpal
  • Dorsal Metacarpal Ligaments - Posteriorly between the 4th and 5th Metacarpal
  • Palmar Metacarpal Ligaments - Anteriorly between the 4th and 5th Metacarpal
• Shaft of 5th Metacarpal
  • 4th Palmar Interossei of the Hand - Lateral Side

Structures Attaching to Bony Features as Insertion

• Base of 5th Metacarpal
  • Dorsal Carpometacarpal Ligament
  • Extensor Carpi Ulnaris - Tubercle on the Medial Side
  • Flexor Carpi Ulnaris
  • Palmar Carpometacarpal Ligament
  • Pisometacarpal Ligament