INTRINSIC MUSCLES OF THE FINGER JOINTS Flashcards
ABDUCTOR POLLICIS BREVIS: O&I
O: tubercle of the scaphoid and trapezium, and flexor retinaculum
I: radial side of the base of the proximal phalanx of the thumb and the DDE
ABDUCTOR POLLICIS BREVIS: A&N
A: ABD the thumb at the CMC joint
N: median n.
FLEXOR POLLICIS BREVIS: O&I
O: flexor retinaculum and trapezium
I: radial side of base of proximal phalanx
FLEXOR POLLICIS BREVIS: A&N
A: flexes thumb at the CMC and MCP joints
N: median and ulnar n.
OPPONENS POLLICIS: O&I
O: flexor retinaculum and tubercle of trapezium
I: anterior and lateral surface of the first MC of the thumb
OPPONENS POLLICIS: A&N
A: opposed the thumb at the CMC joint
N: median and ulnar n.
ABDUCTOR DIGITI MINIMI MANUS: O&I
O: pisiform and tendon of the flexor carpi ulnaris
I: ulnar side of the base of the proximal phalanx of finger 5 and the DDE
ABDUCTOR DIGITI MINIMI MANUS: A&N
A: ABD finger 5 at the MCP and CMC joint
N: ulnar n.
FLEXOR DIGITI MINIMI MANUS: O&I
O: flexor retinaculum and hook of hamate
I: anteromedial side of the base of the proximal phalanx of finger 5
FLEXOR DIGITI MINIMI MANUS: A&N
A: flexes finger 5 at the MCP and CMC joint
N: ulnar n.
OPPONENS DIGITI MINIMI: O&I
O: flexor retinaculum and hook of hamate
I: anterior surface of the medial border fo 5th MC
OPPONENS DIGITI MINIMI: A&N
A: opposes finger 5 at the CMC joint
N: ulnar n.
ADDUCTOR POLLICIS: O&I
O: anterior base of second and third MC and capitate (OH); distal 2/3 of anterior surface of third MC (TH)
I: medial side of the base of the proximal phalanx of thumb and DDE (OH); and the medial side of the base of the prox phalanx of thumb (TH)
ADDUCTOR POLLICIS: A&N
A: ADD thumb at CMC joint, flexes thumb at CMC and MCP and extends thumb at IP joints
N: ulnar n.
LUMBRICAL MANUS: O
O: distal tendons of FDP mm
- L1: radial side of FDP tendon of finger 2
- L2: radial side of FDP tendon of finger 3
- L3: ulnar side of FDP tendon of finger 3 AND radial side of FDP tendon of finger 4
- L4: ulnar side of FDP tendon of finger 5
LUMBRICAL MANUS: I
I: radial side of the distal tendon of extensor digitorum (DDE)
- L1: into the tendon of finger 2
- L2: into the tendon of finger 3
- L3: into the tendon of finger 4
- L4: into the tendon of finger 5
LUMBRICAL MANUS: A&N
A: extends fingers 2-5 at PIP and DIP joint; flexes fingers 2-5 at MCP joint
N: median and ulnar n.
PALMAR INTEROSSEI: O
O: ant side and “middle finger side” of MC’s fingers 2,4 and 5
P1: attaches to MC of finger 2
P2: attaches to MC of finger 4
P3: attaches to MC of finger 5
PALMAR INTEROSSEI: I
I: base of prox phalanges of fingers 2, 4 and 5 on “middle finger side” and DDE
P1: attaches to finger 2
P2: attaches to finger 4
P3: attaches to finger 5
PALMAR INTEROSSEI: A&N
A: ADD and flex finger 2,4,a and 5 at MCP joint
N: ulnar n.
DORSAL INTEROSSEI MANUS: O
O: MC of finger 1-5 D1: MCs of finger 1-2 D2: MC of finger 2-3 D3: MC of finger 3-4 D4: MC of finger 4-5
DORSAL INTEROSSEI MANUS: I
I: base of prox phalanx of fingers 2-4 on side that faces away from center of finger 3 and DDE D1: lateral side of finger 2 D2: lateral side of finger 3 D3: medial side of finger 3 D4: medial side of finger 4
DORSAL INTEROSSEI MANUS: A&N
A: ABD and flexes finger 2-4 at MCP joint
N: ulnar n.
PALMARIS BREVIS: O&I
O: flexor retinaculum and palmar aponeurosis
I: dermis of medial (ulnar) board of hand
PALMARIS BREVIS: A&N
A: wrinkles skin of palm
N: ulnar n.