scaphoid (navicular) fracture

• rule of 70's
  • 70% of wrist fractures
  • 70% fracture at waist
  • 70% unite (5% --> AVN)

• most commonly fractured bone in wrist
  • only bone which bridges prox + distal carpal rows

• AVN occurs in PROXIMAL fragment: 1st sign is increased density

• perilunate fx-dislocation
• triquetral fx

© 2002, C.E. Kahn, Jr.
2002-04-18