Carpal Bones Attachments

#anatomy #upperlimb #carpalbones
CARPAL BONES ATTACHMENTS
There are four bony pillars at the four corners of the
carpus. All attachments are to these four pillars .
1 The tubercle of the scaphoid:
i. The flexor retinaculum,
ii. A few fibres of the abductor pollicis brevis.
2 The pisiform gives:
i. Insertion to be Flexor carpi ulnaris (FCU).
Pisiform is a sesamoid bone in tendon of FCU.
ii. Flexor retinaculum and its superficial slip
iii. Abductor digiti minimi
iv. Extensor retinaculum
3 The trapezium:
i. The crest gives origin to the abductor pollicis
brevis, flexor pollicis brevis, and opponens
pollicis. These constitute muscles of thenar
eminence
ii. The edges of the groove give attachment to the
two layers of the flexor retinaculum.
iii. The lateral surface gives attachment to the lateral
ligament of the wrist joint.
iv. The groove lodges the tendon of the flexor carpi
radialis.
4 The hamate:
i. The tip of the hook gives attachment to the flexor
retinaculum
ii. The medial side of the hook gives attachment to the
flexor digiti minimi and the opponens digiti minimi.
#anatomy

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