- 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