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Lateral Carpometacarpal Ligament of Thumb (Right)
Connective Tissue

Lateral Carpometacarpal Ligament of Thumb (Right)

Ligamentum carpometacarpea laterale pollicis

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Anatomical Relations

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

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Function

The lateral carpometacarpal ligament stabilizes the carpometacarpal joint of the thumb and permit limited gliding movements of the joints produced by the long flexor and extensor muscles of the digit.

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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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