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Tarsal Navicular

- See:
- Accessory Navicular
- Kohler's Disease I

- Anatomy:
- navicular joins in front w/ medial, intermediate, & lateral cuneiform bones, which articulate anteriorly w/ first, second, and third metatarsals;
- navicular provides insertion for tibialis posterior;
- blood supply to the navicular bone is radial and extraarticular & is subject to loss both at time of injury & at time of surgical rx;

- Fracture:
- navicular stress frx
- cortical avusion fractures
- body fractures
- longitudinal stress injuries of midtarsal joint
- dorsal lip frx:
- look for assoc ankle sprain;
- w/ large lip frx or mid tarsal joint injury, then consider SLC;
- fracture dislocation

- Assoc Injuries:
- Midfoot/Forefoot Fractures
- Midtarsal Injuries

Displaced intra-articular fractures of the tarsal navicular.

Surgical reconstruction for calcaneonavicular coalition. Evaluation of function and gait.