| Palmar aponeurosis & Fascia
Removed - Palmis longus tendon and palmaris brevis are excised together
with palmar brevis covering the thenar and hypothenar eminences. The volar
carpal ligament, which forms the roof of the ulnar canal (over the flexor
retinaculum) is also excised. The ulnar artery and nerve are seen passing
into the ulnar canal, where they divide into their superficial and deep
terminal branches. Two vertical septa (one on each side of the palmar
aponeurosis) divide the palm into three compartments (for the thenar
muscles laterally, hypothenar muscles medially, anda long tendons
centrally, beneath the palmar aponeurosis). The base of the palmar
aponeurosis is bound to the fibrous flexor sheaths of the fingers by
(four) longitudinal bundles. |
