Pediatric Mallet Finger Fracture

• Etiology:
  — Injury of extensor mechanism of finger at distal interphalangeal joint
  — Distal interphalangeal joint undergoes sudden flexion or crush injury in the extensor direction
• Imaging Radiograph:
  –Classically see triangular avulsion fragment at insertion of common extensor tendon on dorsal aspect of distal phalanx at distal interphalangeal joint
  — However high percentage of injuries due not have avulsion fragment
• DDX:
• Complications:
• Treatment:
• Clinical: Presents with inability to extend finger at distal interphalangeal joint

Radiology Cases of Mallet Finger Fracture