- See:
-
Ligaments of the Wrist
- Discussion:
- an atomical defect or weak spot in the floor of the carpal tunnel;
- it lies at the volar aspect of the proximal
capitate, lying between
the volar radiocapitate and volar radiotriquetral ligaments (see
ligaments);
- area expands when wrist is dorsiflexed & disappears in palmar flexion;
- rent develops during dorsal dislocations, & it is thru this defect that lunate
displaces into the carpal canal;
- space of Poirier allows concomitant extension at the midcarpal joint w/
radiocarpal but also allows escape of distal carpal row from lunate in
perilunar dislocations;
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Chronic capitolunate instability
