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Osselet is arthritis in the fetlock joint of a horse, caused by trauma. [1] Osselets usually occur in the front legs of the horse, because there is more strain and concussion on the fetlock there than in the hind legs. The arthritis will occur at the joint between the cannon bone and large pastern bone, at the front of the fetlock.
Splints is an ailment of the horse or pony, characterized by a hard, bony swelling, usually on the inside of a front leg, lying between the splint and cannon bone or on the splint bone itself. It may be "hot," meaning that it occurred recently and is still painful; or "cold," meaning that the splint has completely recovered and there is no ...
Bucked shins: pain, heat, and swelling over the dorsal surface of the cannon bone most commonly seen in racehorses. This complex disease process, called "dorsal metacarpal disease," involves inflammation of the periosteum , subperiosteal hematoma, and microfractures to the cortex of the underlying bone.
Zygomatic bones: attach to the temporal bone to form the zygomatic arch (cheek bone) Palatine bones: form the back of the hard palate; Sphenoid bone: formed by fusion of the foetal basisphenoid and presphenoid bones, at the base of the skull. Can become fractured in horses that rear over backwards. Vomer: forms the top of the inside of the ...
Below the knee is the cannon bone which is also known as the 3rd metacarpal. 55 million years ago when the Eohippus existed, the cannon bone used to be the 3rd metacarpal of the foot. Its current enlargement took place in order to increase the height of the limb, which helps increase stride length. Behind the cannon bone are the splint bones.
The concussion comes from the rigorous training regimen that two-year-olds often face and inability of the bone to adapt fast enough. 70% of young Thoroughbred racehorses in training develop the problem, usually in the first six months. As horses become older, the cannon bone becomes stiffer and thus bucked shins rarely occur again.
Fetlock joint: the joint between the cannon bone and the pastern. Fetlock is the common name in horses, large animals, and sometimes dogs for the metacarpophalangeal and metatarsophalangeal joints (MCPJ and MTPJ). Although it somewhat resembles the human ankle in appearance, the joint is homologous to the ball of the foot.
Fairly commonly injured by horses doing fast work, the DDFT is round in cross section. Superficial digital flexor: Runs down the back of the leg, behind the carpus and cannon, branches below the fetlock and inserts into the distal side of the 1st phalanx and proximal side of the 2nd phalanx. Flexes the elbow, carpus and lower joints.