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The palmaris longus muscle itself is a weak flexor, and provides no substantial flexing force that would inhibit movement in the wrist if its tendon were cut and moved elsewhere. The palmaris longus may contribute and assist in thumb abduction movements; an action necessary to open the hand. [11] [12] If the palmaris longus muscle is not ...
Anatomic reconstruction of the RULs using a tendon graft (e.g., the palmaris longus). The tendon graft is tunneled through drilled holes in the ulnar and radius bones. This procedure is indicated for DRUJ instability caused by an irreparable TFCC. [13] [3] Capsular or extensor retinaculum plication.
Dysesthesia of palmar triangle; Pain on resistance to pronation; Pain in forearm on resistance to isolated flexion of the PIP joint of long and ring fingers; In C5 tetraplegia or radial nerve palsy patients, pronator teres tendon can be rerouted, so called tendon transfer, to extensor carpi radialis brevis tendon to restore wrist extension. [3]
palmaris longus: extrinsic: median superficial: flexor carpi ulnaris: extrinsic: ulnar superficial: pronator teres: intrinsic: median superficial (or intermediate) flexor digitorum superficialis: extrinsic: median deep: flexor digitorum profundus: extrinsic: ulnar + median (as anterior interosseous nerve) deep: flexor pollicis longus: extrinsic
The intrinsic muscle groups are the thenar and hypothenar (little finger) muscles; the interossei muscles (four dorsally and three volarly) originating between the metacarpal bones; and the lumbrical muscles arising from the deep flexor (and which are special because they have no bony origin) to insert on the dorsal extensor hood mechanism.
The palmaris is a popular source of tendon material for grafts and this has prompted studies which have shown the absence of the palmaris does not have any appreciable effect on grip strength. [ 61 ] The levator claviculae muscle in the posterior triangle of the neck is a supernumerary muscle present in only 2–3% of all people [ 62 ] but ...
(The flexor pollicis longus, which is inserted into the distal phalanx of the thumb, is not considered part of the thenar eminence.) Opponens pollicis lies deep to abductor pollicis brevis. As its name suggests it opposes the thumb, bringing it against the fingers. This is a very important movement, as most of human hand dexterity comes from ...
The tendons of the palmaris longus and flexor carpi ulnaris are partly attached to the surface of the retinaculum; below, the short muscles of the thumb and little finger originate from the flexor retinaculum.