The Equine Forelimb. The Pastern. Flashcards
What is the least movable phalangeal joint in the equine forelimb?
The pastern.
What kind of joint is the pastern?
A simple saddle joint.
What bones are involved in the pastern?
The distal part of P1 (the long pastern).
The proximal part of P2 (the short pastern).
What additional feature is found on P2?
A fibrocartilage lip.
What surfaces of the pastern is the joint capsule mostly present on?
The dorsal and palmar surfaces of the joint.
What tendon blends with the dorsal surface of the joint capsule of the pastern?
The common digital extensor tendon.
What ligaments blend with the lateral/medial and palmar surfaces of the joint capsule of the pastern?
The lateral and medial collateral ligaments.
The straight sesamoidean ligaments.
What aspect of the pastern are the 2 cavities within the joint capsule located?
There is a dorsal recess.
There are 2 collateral recesses.
What recess of the joint capsule of the pastern is used for arthrocentesis?
The dorsal cavity.
What aspect of P2 is the fibrocartilaginous lip found on?
On the proximopalmar border.
What is the function of the fibrocartilaginous lip of P2?
It extends the joint capsule and supports the joint.
It also acts as an area for tendons and ligaments to attach to.
Are there collateral ligaments associated with the pastern?
Yes.
Where do the collateral ligaments of the pastern run from and to?
From P1 to P2.
What are the palmar ligaments of the pastern?
The medial and lateral palmar ligaments.
What are the 2 branches on each of the palmar ligaments of the pastern?
An axial and abaxial branch.
