Changes

*Craniolateral position on the forearm

*Craniolateral position on the forearm

*Almost all originate from the lateral epicondyle of the humerus

*Almost all originate from the lateral epicondyle of the humerus

*'''Extensor carpi radialis''': most medial, inserts on 2nd/3rd metacarpal bone  

*'''Extensor carpi radialis''': most medial, inserts on middle metacarpal bone  

*'''Ulnaris lateralis''': most lateral, inserts on accessory carpal bone

*'''Ulnaris lateralis''': most lateral, inserts on accessory carpal bone and 5th metacarpal

*'''Extensor carpi obliquus''': aka '''abductor pollicis longus'''

*'''Extensor carpi obliquus''': aka '''abductor pollicis longus'''

**Origin: cranial radius  

**Origin: cranial radius  

**Insertion: most medial metacarpal bone

**Insertion: 1st metacarpal

*Last two may also serve in medial deviation of the paw

*Last two may also serve in medial deviation of the paw

*'''Common Digital Extensor'''

*'''Common Digital Extensor'''

**Insertion: extensor process of the distal phalanx of each digit

**Insertion: extensor process of the distal phalanx of each digit

**Sends a medial branch to dewlcaw and medial digits in all but horse and cat

**Sends a medial branch to dew caw

*'''Lateral Digital Extensor'''

*'''Lateral Digital Extensor'''

**Insertion: dorsal proximal phalanx

**Insertion: dorsal proximal phalanges of 3rd to 5th digit

''Flexors'': Median or Ulnar n. of the brachial plexus

''Flexors'': Median or Ulnar n. of the brachial plexus

*Caudal position on the forearm

*Caudal position on the forearm

*Originate from the caaudal medial epicondyle of the humerus

*Originate from the caudal medial epicondyle of the humerus

*'''Flexor carpi radialis''': most medial, inserts on upper 2nd/3rd metacarpal bone

*'''Flexor carpi radialis''': most medial, inserts on upper 2nd/3rd metacarpal bone

*'''Flexor carpi ulnaris''': most lateral, inserts on the accessory carpal bone

*'''Flexor carpi ulnaris''': most lateral, inserts on the accessory carpal bone

*'''Superficial Digital Flexor'''

*'''Superficial Digital Flexor'''

**Branches according to the number of digis and inserts in proximal interphalangeal joint

**It divides into four branches which insert on the middle phalanges of all digits

*'''Deep Digital Flexor'''

*'''Deep Digital Flexor'''

**Passes through carpal canal before branching and continues to palmar distal phalanges

**Passes through carpal canal before branching and continues to palmar distal phalanges

*Support metacarpophalnageal joints

*Support metacarpophalnageal joints

*Arise from palmar proximal metacarpal bones and insert on sesamoid bones within the joints, continued by ligaments to phalanges

*Arise from palmar proximal metacarpal bones and insert on sesamoid bones within the joints, continued by ligaments to phalanges

==Vasculature of the Forelimb==

==Vasculature of the Forelimb==