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An accessory abductor pollicis longus (AAPL) tendon is present in more than 80% of people, and a separate muscle belly is present in 20% of people. In one study, the accessory tendon was inserted into the trapezium (41%); proximally on the abductor pollicis brevis (22%) and opponens pollicis brevis (5%); had a double insertion on the trapezium and thenar muscles (15%); or the base of the first ...
Print/export Download as PDF; Printable version; In other projects ... Abductor pollicis longus; Abductor pollicis brevis; Lower limb
extensor pollicis longus, extensor pollicis brevis: 2 1 abductor pollicis brevis: Upper limb, Hand, Lateral volar, Thenar flexor retinaculum of hand, scaphoid and trapezium: radial base of proximal phalanx of thumb and thumb extensors: superficial palmar arch: median nerve: abducts thumb: adductor pollicis: 2 1 adductor pollicis: Upper limb ...
The 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 including grip comes from this action. The abductor pollicis brevis originates on the scaphoid tubercle and the flexor retinaculum. It ...
Abductor pollicis longus tendon. Extensor pollicis brevis tendon. Thumb abduction and extension at metacarpophalangeal joint. Forms radial (thumb side) border of the anatomical snuff box. De Quervain's tenosynovitis: 2 Extensor carpi radialis longus tendon. Extensor carpi radialis brevis tendon. Extension of wrist Intersection syndrome: 3
Abductor pollicis brevis abducts the thumb. This muscle is the most superficial of the thenar group. Flexor pollicis brevis, which lies next to the abductor, will flex the thumb, curling it up in the palm. (The flexor pollicis longus, which is inserted into the distal phalanx of the thumb, is not considered part of the thenar eminence.)
abductor pollicis brevis, opponens pollicis, and first and second lumbricals. Ulnar: Flexor carpi ulnaris, flexor digitorum profundus (half), palmaris brevis, flexor digiti minimi, abductor digiti minimi, opponens digiti minimi, adductor pollicis, flexor pollicis brevis (deep head), palmar and dorsal interossei, and third and fourth lumbricals.
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