Scaphoid non-union advanced collapse (illustration)

Case contributed by Andrew Murphy
Diagnosis not applicable

Scroll for stages of SNAC

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Simplified demonstration of SNAC wrist from fracture to stage three

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Illustration
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Simplified demonstration of SNAC wrist from fracture to stage three

 

Case Discussion

Scaphoid non-union advanced collapse (SNAC) can occur secondary to scaphoid fractures, specifically non-union of scaphoid fractures. The proximal fragment remains at the lunate while the distal fragment begins to rotate into flexion creating abnormal contact in the radio-scaphoid compartment that will progressively get worse.

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