tendinous sheath of extensor digitorum and extensor indicis muscles

tendinous sheath of ex·ten·sor di·gi·to·rum and ex·ten·sor in·di·cis mus·cles

[TA] the dorsal carpal synovial tendon sheath that surrounds the four tendons of the extensor digitorum muscle and the tendon of the extensor indicis deep to the extensor retinaculum. Synonym(s): vagina tendinum musculorum extensoris digitorum et extensoris indicis [TA]