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Palmar Carpometacarpal Ligament of Thumb
Connective Tissue

Palmar Carpometacarpal Ligament of Thumb

Ligamentum carpometacarpea palmaria pollicis

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Anatomical Relations

The first carpometacarpal joint contains a palmar carpometacarpal ligament, which extends obliquely from the ulnar side of the base of the first metacarpal to the palmar surface of the trapezium.

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Function

The palmar carpometacarpal ligaments stabilize the carpometacarpal joints and permit limited gliding movements of the joints produced by the long flexor and extensor muscles of the digits.

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Joint Ligament

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Laxity of the TMJ ligaments → hypotonus of the temporal and masseter muscles → dropping of the jaw.

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