The Equine Forelimb. The Carpus. Flashcards
What type of joint is the carpal joint?
A compound synovial hinge joint.
What bones are involved in the carpal joint?
The distal aspects of the radius.
The proximal row of carpal bones.
Is the ulna involved in the carpus of the horse?
No.
What are the carpal bones involved in the first row of carpal bones from medial to lateral?
The radial carpal bone.
The intermediate carpal bone.
The ulna carpal bone.
The accessory carpal bone.
What carpal bones are found in the distal row of carpal bones?
Carpal bones 1, 2 ,3 and 4.
What carpal bone from the 2nd row of carpal bones is often not present?
Carpal bone 1.
If carpal bone 1 is located in the horse, where will it be located?
It will usually be isolated and it is embedded in the palmar carpal ligament behind the 2nd carpal bone.
What is the largest carpal bone in the 2nd row of carpal bones?
Carpal bone 3.
What is the radial carpal joint?
The point where the radius articulates with the carpus.
What is the middle carpal joint?
The joint that is between the proximal and distal row of carpal bones.
What is the carpometacarpal joint?
The joint between the distal carpal bones and the metacarpal bones.
What are the intercarpal joints?
Joints between the carpal bones of the same row.
What part of the carpus has the most movement?
The radio-carpal joint.
What part of the carpus has the least movement?
The carpo-metacarpal joint.
The joint capsule of the carpus is formed between what bones?
It extends from the radius and ulna and travels to the metacarpal bones.
On what aspects is the joint capsule of the carpus most thick?
On the palmar and dorsal aspects.
How does the extensor retincaculum affect the joint capsule of the carpus?
It helps to strengthen the joint capsule.
What tendons are surrounded by the extensor retinaculum?
The extensor tendons.
Where on the carpus is the extensor retinaculum found?
On the dorsal aspect.
What are the 3 major extensor tendons that are surrounded by the extensor retinaculum?
The common digital extensor tendon.
The extensor carpi radialis tendon.
The lateral digital extensor tendon.
What makes the joint capsule of the carpus thicker on the palmar aspect?
The extensor retinaculum.
Where does the extensor retinaculum extend to and from within the carpus?
From the palmar edge of the accessory bone to the mediopalmar aspect of the joint.
What 3 things form the carpal canal?
The extensor retinaculum.
The flexor retinaculum.
The accessory carpal bone.
What runs through the carpal canal?
The flexor tendons.
Arteries.
Nerves.
