Distal Phalanx of the Thumb

Parent Structures

• Phalanges

Bone Classification

• Long

Bony Features

• Base of Distal Phalanx of the Thumb
• Head of Distal Phalanx of the Thumb
• Shaft of Distal Phalanx of the Thumb

Associated Joints

• IP of the 1st Phalanx of the Hand

Structures Attaching to Bony Features as Insertion

• Base of Distal Phalanx of the Thumb
  • Collateral Ligaments of the 1st IP - Palmar Aspect. Blends with the Lateral Margins of the Palmar Ligament
  • Extensor Pollicis Longus - Dorsal Surface
  • Flexor Pollicis Longus - Palmar Surface
  • Palmar Ligament of the 1st IP - Anterior Margin