Wrists + Hands Flashcards
What are most proximal bones of wrists and hands?
Carpels
What are metacarpals?
5 bones form palm or back of hand
Abductor Pollicus Longus
O: Posterior radius/ posterior ulna/ interosius membrane
I: Base if first metacarpel
A: Abduction of thumb/ assist wrist abduction
Adductor Pollicis
O: Anterior shaft of 3rd metacarpel/ base of 2nd, 3rd metacarpels/ carpet bones
I: Base of proximal flanex of thumb
A: Adduction of thumb
Opponens Pollicis
O: Flexor ratonaccela/ trapezium carpel bone
I: Lateral shaft of 1st metacarpel
A: Opposition of thumb
Flexor Pollicis Brevis
O: Flexor ratinaculum/ trapezius carpel bone/ trapazoid/ capital carpel bones
I: Base of proximal phalanx of thumb
A: Flexion of thumb
Abductor Pollicis Brevis
O: Flexor ratinaculum/ trapezium/ scaphoid carpel bone
I: Base of proximal phalanx of thumb
A: Abduction of thumb
What 3 muscles make up thenar eminence?
Pollicis brevis, flexor pollicis brevis, and abductor pollicis brevis
Abductor Digiti Minmi
O: Pisiform carpel bone
I: Base of proximal phalanx of little finger
A: Abduction of little finger
Opponens Digiti Minimi
O: Flexor rattinaculum/ hook of hamate carpel bone
I: Ulnar border of 5th metacarpel
A: Where little finger meets thumb
Flexor Digiti Minimi Brevis
O: Flexor ratinaculum/ hook of hamate carpel bone
I: Base of proximal phalanx of little finger
A: Flexion of little finger
What 3 muscles make up hypothenar eminence?
Abductor digiti minimi, opponens digiti minimi, flexor digiti minimi brevis
Extensor Pollicis Brevis
O: Posterior radius/ interosius membrane
I: Base of proximal phalanx of thumb
A: Extension of thumb and assist wrist abduction
