5th Proximal Phalanx of the Hand

Parent Structures

• Phalanges

Bone Classification

• Long

Bony Features

• Base of 5th Proximal Phalanx of the Hand
• Head of 5th Proximal Phalanx of the Hand
• Shaft of 5th Proximal Phalanx of the Hand

Attaching Structures as Origin

• Abductor Digiti Minimi - Ulnar Side and Dorsal Digital Expansion
• Palmar Ligament of the PIP of the 5th Phalanx of the Hand - Attached to the Neck by the Joint Capsule

Attaching Structures as Insertion

• 4th Lumbrical of the Hand - Lateral Edge of the Dorsal Digital Expansion

Associated Joints

• 5th Metacarpophalangeal Joint (5th MCP)
• PIP of the 5th Phalanx of the Hand

Structures Attaching to Bony Features as Origin

• Head of 5th Proximal Phalanx of the Hand
  • Collateral Ligament of the PIP of the 5th Phalanx of the Hand

Structures Attaching to Bony Features as Insertion

• Base of 5th Proximal Phalanx of the Hand
  • 4th Palmar Interossei of the Hand - Dorsal Digital Expansion
  • Collateral Ligaments of the 5th MCP - Palmar Aspect of the side
  • Flexor Digiti Minimi Brevis - On the Ulna Side
  • Palmar Ligament of the 5th MCP - Anterior Margin