Space of Poirier

- 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

Chronic capitolunate instability

Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Wednesday, December 12, 2012 4:14 pm