Sangeorzan et al classified fractures of the tarsal navicular bone. The authors are from the University of Washington in Seattle.
Parameters:
(1) fracture plane
(2) deformity of forefoot, with angulation
(3) associated injuries
Fracture |
Forefoot Deformity |
Associated Injury |
Type |
transverse in coronal plane with dorsal fragment < 50% |
none |
none |
1 |
dorsal-lateral to plantar-medial across the body, with plantar-lateral piece smaller and often comminuted |
present, displaced medially |
dorsal talonavicular ligament |
2 |
central or lateral comminution, with medial fragment largest |
present, displaced laterally |
cuneonavicular joint and/or calcaneo-cuboid joint |
3 |
where:
• The Type 1 fracture may be seen on a lateral foot X-ray and may be missed on antero-posterior films.
Specialty: Surgery, orthopedic, Emergency Medicine, Critical Care, Surgery, general