Distal sesamoid of forelimb
The Distal sesamoid of forelimb in animals (Ox, Dog, Cat, sheep, goat, horse, pig, rabbit and fowl) is described below here with details-
Distal sesamoid of forelimb of Ox
The distal sesamoid of forelimb in ox is otherwise called as os navicularis. It is placed behind the second inter-phalangeal articulation. It presents two surfaces, two borders and two extremities .
The dorsal face is articular, faces upward and forward and presents two facets for the second phalanx.
The volar or flexor surface is broader and in life is covered by fibro-cartilage for the play of the deep flexor tendon.
The proximal border is grooved for ligamentous attachment and distal border bears a small facet about its middle for the os pedis. The extremities are rounded.
Distal sesamoid of Sheep and Goat
The number of distal sesamoid in sheep and goat is similar to that of an ox. The flexor surface of the distal sesamoid forms a shallow groove not divided by a ridge.
Distal sesamoid of Horse
The distal sesamoid of horse is shuttle shaped and longer, with narrow extremities.
Distal sesamoid of Pig
One distal sesamoid present for each chief digit in pigs but absent in accessory digits.
Distal sesamoid of Dog
The distal sesamoids are cartilaginous in Dog.
Distal sesamoid of Rabbit
Distal sesamoids are present in the inter-phalangeal joints in case of rabbit’s forelimb.
Distal sesamoid of Fowl
Sesamoid bones are absent in case of fowl’s forelimb.
