lunate morphology
Several classification systems exist for the lunate morphology .
Classification
The lunate classification proposed by Viegas et al. is arguably the most relevant :
- type I lunate: single distal articular facet for the capitate
- type II lunate: additional distal articular facet medially for the hamate
There is roughly an even prevalence of the two morphology types.
Related pathology
Type I lunates are associated with a higher prevalence of dorsal intercalated segment instability (DISI) deformity in the setting of scaphoid fracture non-union (~75% vs 20%).
Type II lunates are associated with hamatolunate impingement syndrome leading to a higher prevalence of hamatolunate degenerative arthritis .
Siehe auch:
Assoziationen und Differentialdiagnosen zu lunate morphology: