Ch 12- Wrist Flashcards
Flexor Carpi Ulnaris
O- medial epicondyle of humerus (common flexor tendon)
I- pisiform and base of 5th metacarpal
A- wrist flexion, ulnar deviation
N- Ulnar nerve (C8, T1)
Flexor Carpis Radialis
O- medial epicondyle of humerus (common flexor tendon)
I- base of 2nd and 3rd metacarpals
A- wrist flexion, radial deviation
N- median nerve (C6, 7)
Palmaris Longus
O- medial epicondyle of humerus (common flexor tendon)
I- Palmar aponeurosis
A- assists in wrist flexion
N- median nerve (C6, 7)
Extensor carpi radialis longus
O- lateral supracondylar ridge of humerus
I- base of 2nd metacarpal
A- wrist extension, radial deviation
N- Radial nerve (C6, 7)
Extensor carpi radialis brevis
O- lateral epicondyle of humerus
I- base of 3rd metacarpal
A- wrist extension
N- radial nerve (C6, 7)
Extensor carpi ulnaris
O- lateral epicondyle of humerus
I- base of 5th metacarpal
A- wrist extension, ulnar deviation
N- radial nerve (C6, 7, 8)
Wrist flexors attach to what part of the humerus?
attach to the medial epicondyle of humerus and are located on the anterior forearm
Wrist extensors attach to what part of the humerus?
attach to the lateral epicondyle of humerus and are located on the posterior forearm
Order of carpal bones on left hand from left to right? From anterior view
Trapezium, Trapezoid, Capitate, Hamate, Scaphoid, Lunate, Triquetrum, Pisiform
(from bottom up and left to right: Some Lovers Try Positions That They Can’t Handle)
Most commonly fractured carpal bone?
Scaphoid (ex: falling on outstretched hand), leads to avascular necrosis of the bone
Second most fractured carpal bone?
Triquetrum
First CMC arthritis
really common condition, early 40’s initial stages
Least fractured carpal bone?
trapezoid
Common flexor tendon (5)
(come off the medial epicondyle)
- flexor carpi ulnaris
- flexor carpi radialis
- palmaris longus
- pronator teres
- flexor digitorum superficialis
Pronator Teres
O- medial epicondyle of humerus (common flexor tendon)
I-
A-
N-