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Proximal Pole Fracture Risk
- Proximal pole fractures are the most common site for scaphoid fracture nonunion due to their poor blood supply.
- Risk factors include vertical oblique fracture patterns, displacement over 1 mm, older age, and smoking.
Scaphoid Retrograde Blood Supply
- The scaphoid receives dorsal blood supply retrograde to 80% of its bone, creating a vascular watershed zone.
- This unique blood flow pattern results in poor healing potential and increased risk of nonunion.
CT Scans Optimal for Planning
- Use CT scans with 1mm cuts oriented in the plane of the scaphoid for optimal evaluation and surgical planning.
- CT reduces metal artifact and offers detailed assessment of fracture patterns, displacement, and gaps.