Finger (phalanx) fracture

Background

• Be wary of avulsion fx of base of phalanx
  • Lateral or medial fracture fragment = collateral ligament avulsion
  • Dorsal fracture fragment = extensor tendon avulsion
  • Palmar fracture fragment = volar plate avulsion
• Flexion deformity of distal phalanx (mallet/baseball finger) = avulsion fx or extensor tendon rupture

DDX

• Proximal Phalanx (Finger) Fracture
• Middle Phalanx (Finger) Fracture
• Distal Phalanx (Finger) Fracture

See Also

• Hand Fracture
• Hand Diagnoses (Main)

Source

UpToDate