Pisometacarpal ligament | definition of pisometacarpal ligament by Medical dictionary
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pi·so·met·a·car·pal lig·a·ment [TA]
a strong fibrous band extending from the pisiform bone to the base of the fifth metacarpal bone; this ligament, together with the pisohamate ligament, forms the tendon of insertion of the flexor carpi ulnaris, in which the pisiform bone is like a sesamoid bone.
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References in periodicals archive
The flexor carpi ulnaris forms the pisohamate and pisometacarpal ligaments
distally which in conjunction with the tendon stabilize the pisiform.
The tendon is attached to the pisiform, and thence prolonged to the hamate and fifth metacarpal bone by pisohamate and pisometacarpal ligaments
. Acting with the flexor carpi radialis, it flexes the wrist and acting with the extensor carpi ulnaris it adducts the wrist (Standring 2005).
The latter elongates to form the pisohammate and pisometacarpal ligaments
, which contributes towards the carpus stability.