Hamulus of Hamete
The hamate bone is one of the eight bones of the wrist located on the ulnar side of the hand. It is distinguished from the rest of the carpal (wrist) bones by its wedge shape and a hooked process (hamulus), which extends anteriorly.
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Hamulus of Hamete
Hamulus of the hamate arises from the medial (ulnar) aspect of the bone. It curves laterally (radially) and forms the medial boundary of the carpel tunnel.
ATTACHMENTS
It serves as an attachment site to many structures which include flexor retinaculum and flexor carpi ulnaris at the tip. Flexor digiti minimi and opponens digiti minimi are attached to its ulnar side.
The lateral side of this process is grooved and provides a passage to the tendons of the flexor muscles of the hand.
CLINICAL SIGNIFICANCE
The hamate bone is the most common bone to fracture when one falls on the hand. The hamulus is particularly prone and can lead to the rupture and damage to the overlying structures, the ulnar artery and ulnar nerve. The insufficient blood supply to the bone often causes fracture-related complications.
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