Patella bone | Sesamoid bone | Veterinary Anatomy

Table of Contents

Patella bone of ox is a large sesamoid bone placed on and articulating with the trochlea of the femur.
It looks triangular in shape on their dorsal/anterior view.
It gives increased leverage to the extensors of leg. It is irregularly triangular and presents two surfaces, two borders, a base and an apex.
The anterior surface is convex and rough.
The posterior or articular surface is divided by a vertical ridge into two concave areas of which the medial is larger.
The two borders converge to the apex below.
The lateral border is convex.
The medial border is concave, forms an angle at the base and gives attachment to the fibro-cartilage of the patella.
The base faces upward and is irregular and narrow.

Patella bone of sheep and Goat is a relatively longer and narrower than that of ox

Horse’s patella base is wide and large. It looks quadrilateral in shape on their dorsal/anterior view

Patella of Pig is very much compressed transversely and presents 3 surfaces

Patella of Dog is a long and narrow

Patella of Rabbit Lies in the patellar groove

Patella bone of fowl is wide and thin