Ext Of Wrist

Question 1

Post compartment

Answer 1

Or-lat epicondyle

Extensors

Question 2

Extensor Carpi Radialis Longus

Answer 2

Origin- lateral epicondyle of humerus
Insertion- post surface base of MC2

Innervation- Radial C6-7

Origin- lateral epicondyle of humerus via common extensor tendon
Insertion- post surface base of MC3

Innervation- posterior interosseous branch of Radial C6-7

Question 3

Extensor Carpi Radialis Brevis

Answer 3

Origin- lateral epicondyle of humerus via common extensor tendon
Insertion- post surface base of MC3

Innervation- posterior interosseous branch of Radial C6-7

Question 4

Extensor Carpi Ulnaris

Answer 4

Origin- lat epicondyle of humerus via common extensor tendon, via aponeurosis to post border of ulna
Insertion- med side base of MC5

Innervation- posterior interosseous branch of Radial C6-7

Origin- med epicondyle of humerus via common flexor tendon
Insertion- pisiform then via tendons to MC5

Innervation- Ulnar C7-8