4th Proximal Phalanx of the Hand

Parent Structures

• Phalanges

Bone Classification

• Long

Bony Features

• Base of 4th Proximal Phalanx of the Hand
• Head of 4th Proximal Phalanx of the Hand
• Shaft of 4th Proximal Phalanx of the Hand

Attaching Structures as Origin

• Palmar Ligament of the PIP of the 4th Phalanx of the Hand - Attached to the Neck by the Joint Capsule

Attaching Structures as Insertion

• 3rd Lumbrical of the Hand - Lateral Edge of the Dorsal Digital Expansion
• 4th Dorsal Interossei of the Hand - Dorsal Digital Expansion

Associated Joints

• 4th Metacarpophalangeal Joint (4th MCP)
• PIP of the 4th Phalanx of the Hand

Structures Attaching to Bony Features as Origin

• Head of 4th Proximal Phalanx of the Hand
  • Collateral Ligament of the PIP of the 4th Phalanx of the Hand

Structures Attaching to Bony Features as Insertion

• Base of 4th Proximal Phalanx of the Hand
  • 3rd Palmar Interossei of the Hand - Dorsal Digital Expansion
  • Collateral Ligaments of the 4th MCP - Palmar Aspect of the side
  • Palmar Ligament of the 4th MCP - Anterior Margin