- See:
-
Blood Supply to the Wrist:
- Exam of Capitate:
- palpable immediately proximal to the base of the 3rd metacarpal;
- w/ wrist is in neutral position, one may palpate a small depression in capitate;
- w/ wrist is flexed depression rolls distally, & capitate slides out from under
lunate to create a fullness where depression has been;
- Injury & Treatment:
- because of capitate's protected position, isolzated injuries are rare;
- mechanism of injury is dorsiflexion and slight radial deviation;
- mid axial dorsiflexion forces frx of scaphoid initially, & then distal
dorsal rim of radius strikes head of capitate, causing it to frx;
- treatment requires ORIF of both scaphoid and capitate fractures;
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Chronic capitolunate instability
