Term
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Definition
O: Medial epicondyles of humerus; coronoid process of ulna
I: Lateral surface of midshaft of radius
A: Pronation of forearm (and hand)
Innervation:
-Median Nerve |
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Term
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Definition
O: Medial epicondyle of humerus (common flexor tendon)
I: Palmar aponeurosis
A: Flexion of Hand
Innervation: median nerve |
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Term
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Definition
O: medial epicondyle of humerus (common flexor tendon)
I: Base of second metacarpal and possible 3rd metacarpal
A: Flexion and abduction (radial deviation) of hand
Innervation: Median nerve |
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Term
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Definition
O: Medial epicondyle of humerus (common flexor tendon)
-proximal 2/3 of posterior surface of ulna
I: Pisiform bone
A: Flexion and adduction (ulnar deviation) of hand
Innervation: Ulnar nerve |
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Term
| Flexor digitorum superficialis |
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Definition
O: medial epicondyle of humerus (common flexor tendon)
-Medial aspect of coronoid process of ulna
-proximal half of radius distal to radial tuberosity
I: base of middle phalanx of each of 4 fingers (medial 4 digits)
A: Flexion of middle phalanx of each of four fingers (medial 4 digits)
-with continued action, flexion of each proximal phalanx.
-aids in flexion of hand
Innervation: median nerve |
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Term
| Flexor digitorum profundus |
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Definition
O: ant and med surface of prox. 2/3 of ulna
-interosseous membrane
-aponeurosis of flexor carpi ulnaris
I: Distal phalanx of each of hte four fingers (medial 4 digits)
A: Flexion of distal phalanx of each of the 4 fingers (med 4 digits)
-with continued action, flexion of hte middle and proximal phalanges
-aids in flexion of hand
Innervation: median and ulnar nerves |
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Term
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Definition
O: ant surface of middle half of radius
-adjacent interosseous membrane
I: Distal phalanx of thume
A: flexion of distal phalanx of thume
Innervation: Median nerve |
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Term
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Definition
O: Distal 1/4 of ulna
I: distal part of radius
A: Pronation of forearm (and hand)
Innervation: median nerve |
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Term
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Definition
O: lateral supracondylar ridge of humerus
-lateral intermuscular septum of arm
I: lat side of distal end of radius
A: flexion of forearem
Innervation: radial nerve |
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Term
| Extensor carpi radialis longus |
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Definition
O: Lateral supracondylar ridge and lat intermuscular septume
-epicondyle of humerus (common extensor tendon)
I: Base of 2nd metacarpal
A: Extension and abduction (radial deviation) of hand
Innervation: radial nerve |
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Term
| Extensor carpi radialis brevis |
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Definition
O: lat epicondyle of humerus (common ext tendon)
-intermuscular septa
-antebrachial fascia
O: base of 3rd metacarpal
A: extension of hand
Innervation: Radial nerve |
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Term
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Definition
O: Lateral epicondyle of humerus (common ext tensdon)
-intermuscular septa
-antebrachial fascia
I: Middle and distal phalanges of each of four fingers (medial 4 digits)
A: Extension of each of 4 fingers (medial 4 digits)
Innervation: radial nerve |
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Term
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Definition
O: Lat epicondyle of humerus (common extensor tendon)
-intermuscular septa in common with the extensor digitorum
Insertion: Middle and distal phalanges of little finger
A: Extension and abduction of little finger
Innervation: radial nerve |
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Term
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Definition
O: Lateral epicondyle of humerus (common ext tendon)
-proximal half of posterior border of ulna
I: base of 5th metacarpal
A: extension and adduction (ulnar deviation) of hand
Innervation: Radial nerve |
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Term
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Definition
O: Posterolateral surface of ulna below radial notch
-lateral epicondyle
-radial collateral and annular ligaments
I: Lateral and adjacent posterior and anterior aspects of proximal shaft of radius
A: supination of forearm (and hand)
Innervation: radial nerve |
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Term
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Definition
O: Posterior surface of ulna and radius
-Interosseous membrane
I: base of 1st metacarpal
A: Abduction and extension of thumb
-abduction and flexion of hand at wrist
Innervation: radial nerve |
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Term
| Extension pollicis brevis |
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Definition
O: post surface of radius
-interosseous membrane
I: proximal phalanx of thumb
A: extension of proximal phalanx and metacarpal of thumb.
-abduction of hand at wrist
Innervation: radial nerve |
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Term
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Definition
O: posterior surface of middle third of ulna
-interosseous membrane
I: distal phalanx of thumb
A: extension of proximal and distal phalanges of thumb
-extension and adduction of metacarpal of thumb
Innervation: radial nerve |
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Term
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Definition
O: Posterior surface of ulna
-interosseous membrane
I: Extensor expansion of index finger
A: extension and adduction of index finger
Innervation: radial nerve |
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Term
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Definition
O: tendons of flexor digitorum profundus
I: extensor expansion of medial four digits on the proximal phalanges
A: extension of interphalangeal joints of medial 4 digits
-flexion of metacarpophlangeal joints
Innervation: Median Nerve (lateral 2) and ulnar nerve (medial 2) |
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Term
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Definition
O: Flexor retinaculum
-scaphoid and trapezium
I: base of proximal phalanx
A: abduction of thumb
IInnervation: median nerve |
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Term
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Definition
O: Flexor retinaculum
-trapezium
I: first metacarpal
A: opposition of thumb
Innervation: median nerve |
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Term
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Definition
O: superficial head: flexor retinaculum (and possible trapezium)
-Deep head: trapezoid and capitate
I: base of proximal phalanx
A: flexion of thumb
-aids in opposition and adduction
Innervation: median nerve (superficial head)
-ulnar nerve (deep head) |
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Term
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Definition
O: Transverse head : 3rd metacarpal
Oblique head: capitate, trapezoid, and trapezium and bases of first three metacarpals
I: base of proximal phalanx
A: Adduction and flexion of thumb
Innervation: ulnar nerve |
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Term
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Definition
O: Palmar aponeurosis, medial border
I: skin on ulnar side of hand
A: Stabilization of skin of palm for gripping
Innervation: ulnar nerve |
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Term
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Definition
O: pisiform
I: base of proximal phalanx of little finger
A: abduction of little finger
Innervation: Ulnar nerve |
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Term
| Flexor digiti minimi brevis |
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Definition
O: flexor retinaculum
-hook of hamate
I: proximal phalanx of little finger
A: flexion of little finger
Innervation: ulnar nerve |
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Term
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Definition
O: flexor retinaculum
-hook of hamate
I: fifth metacarpal
A: opposition of little finger to thumb
Innervation: ulnar nerve |
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Term
| Palmar interossei (3 of them) |
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Definition
O: shaft of metacarpal: one each to index, ring, and little fingers
I: extensor expansion of finger of origin
A: adducitons of the respective finger (index, ring and little fingers)
-flexion of metacarpophalangeal joints
-extension of interphalangeal joints
Innervation: ulnar nerve |
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Term
| Dorsal interossei (4 of them) |
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Definition
O: adjacent surfaces of 2 metacarpals
I: 1st: proximal phalanx on radial side of index finger
-2nd, 3rd, and 4th: proximal phalanx on radial side of middle, ulnar side of middle, and ulnar side of ring fingers, respectively, and extensor expansion.
A: Abduction of index, middle, and ring fingers;
-flexion of metacarpophalangeal joints
-extension of interphalangeal joints (depending on insertion, 1st one may not extend interphalangeal joints)
Innervation: ulnar nerve |
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