Hand Flashcards
Lumbricals
O: Tendons of flexor digitorum profundus
I: lateral aspect of extensor expansion 4 fingers
A: simoltaneous flexion MCP, PIP extension, DIP flexion
Palmar Interossei
O: 2nd, 4th, 5th, metacarpals
I: base of proximal phalanx of 2nd, 4th, and 5th fingers
A: adduct 1st, 4th, 5th fingers at MCP joint
Dorsal Interossei
O: adjacent metacarpals
I: base proximal phalanges of index, middle, and ring fingers
A: abduct fingers at MCP joint
Adductor Pollicis
O: oblique head- capitate, 2nd & 3rd base metacarpals
transverse head- distal 2/3 of palmar surface 3rd metacarpal
Opponens digiti minimi
O: hook of hamate & flexor retinaculum
I: ulnar border of 5th metacarpal
A: lil finger opposition
Abductor digiti minimi
O: pisiform & tendon of flexor carpi ulnas
I: proximal phalanx little finger
A: abducts MCP joint of little finger
Flexor digiti minimi
O: hamate & flexor retinaculum
I: base of proximal phalanx of little finger
A: flexes MCP joint of little finger
Opponens Pollicis
O: trapezium & flexor retinaculum
I: 1st metacarpal
A: thumb opposition
Abductor pollicis brevis
O: scaphoid, trapezium, flexor retinaculum
I: proximal phalanx of thumb
A: abducts CMC thumb joint, flexes CMC & MCP
Flexor pollicis brevis
O: trapezium & flexor retinaculum
I: proximal phalanx of thumb
A: flexes CMC, MCP of thumb
Extensor digiti minimi
O: lateral epicondyle humerus common extensor tendon
I: base distal phalanx little finger
A: extension MCP, PIP, DIP
Extensor Indicis
O: distal ulna & interosseous membrane
I: base distal phalanx
A: extend MCP,PIP, DIP index finger
Extensor Digitorum
O: lateral epicondyle humerus via common extensor tendon
I: base 2-5 distal phalanx
A: extends wrist, MCP, PIP, DIP
Extensor Pollicis longus
O: posterior middle portion ulna
I: base distal phalanx thumb
A: extends CMC, MCP, IP of thumb
Extensor Pollicis Brevis
O: posterior distal radius & extensor retinaculum
I: base proximal thumb phalanx
A: extends MCP & CMC joints
Abductor Pollicis Longus
O: posterior middle portions radius, ulna, & interosseous membrane
I: base of 1st metacarpal
A: abduct CMC joint of thumb, extends
Flexor Digitorum Profundus
O: coronoid process & proximal 3/4 of ulna
I: distal phalanx of 4 fingers
A: flexes DIP, PIP, & MCP finger, wrist flexion
Flexor digitorum superficialis
O: common flexor tendon on medial epicondyle, coronoid process, and radius
I: side of middle phalanx of 4 fingers
A: PIP & MCP joint flexion, wrist flexion
AKs
roll & glide
same
End feels
firm
Capsular pattern
flexion > extension
Open-Packed position
slight flexion
Metacarpal closed packed position
Max flexion
Interphalangeal closed packed position
Max extension
Power Grips
cylindrical
spherical
hook
Precision Grips
pinch
3-jaw chuck
pincer
lateral prehension
side-to-side
lumbrical
