Thumb Distal Phalanx Anatomy

The thumb distal phalanx supports the nailbed, hard nail plate (thumb nail) and thumb pulp.

The distal phalanx is the insertion site for the extensor pollicis longus and the flexor pollicis longus,

Diagrams & Photos
  • Thumb Distal Phalanx Bone Anatomic View
    Thumb Distal Phalanx Bone Anatomic View
  • Thumb Distal Phalanx Bone Diagrammatic View
    Thumb Distal Phalanx Bone Diagrammatic View
  • Thumb Distal Phalanx Bone X-ray View
    Thumb Distal Phalanx Bone X-ray View
Key Points

Chronic paronychial infection can lead to osteomyelitis of the distal phalanx.

Anatomy References
Anatomic Abbreviations
Hand Surgery Resource Anatomy Diagnostic Guide (Chapter)