3,320
edits
Changes
Canine Forelimb - Anatomy & Physiology (view source)
Revision as of 10:26, 25 August 2008
, 10:26, 25 August 2008→Humerus
*The greater tubercle is not seperated into two parts like in other species
*The greater tubercle is not seperated into two parts like in other species
*In dogs and cats, it articulates with the radius medially via a trochlea and the ulna laterally via a '''capitulum'''
*In dogs and cats, it articulates with the radius medially via a trochlea and the ulna laterally via a '''capitulum'''
===Radius===
While in the human the radius and ulna are separated by an interosseus space and articulate only at their extremities, allowing for significant capability of supination and pronation, these movements are much more limited in domestic animals due to the gradual fusing of the two bones. The extreme case is exhibited by the horse.
*The Radius forms the shaft-like rod of the distal limb, which is bowed to varying degrees amont species
*The radius articulates proximally with the distal humerus, caudally with the ulna, and distally with the carpus
*Medially on the distal articular process, a '''styloid process''' projects, which is mirrored laterally by the ulna
===Ulna===
The Ulna's greatest contribution to functional anatomy is in the formation of the '''Olecranon''', or the point of the elbow, which gives rise to the attachment of the '''triceps'''. The olecranon articulates with the humerus via its anconeal process. Distally (where unfused), the '''lateral styloid process''' articulates with the '''ulnar carpal bone'''.
==Joints of the Proximal Forelimb==
==Joints of the Proximal Forelimb==