Medical Term:

tendinous sheath of abductor pollicis longus and extensor pollicis brevis muscles

 

Definition: the dorsal carpal synovial tendinous sheath lining the compartment of the extensor retinaculum that contains the abductor pollicis longus and extensor pollicis brevis tendons.

Synonym(s): vagina tendinum musculorum abductoris longi et extensoris brevis pollicisTA

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