bone spavin

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bone spavin

equine osteophyte formation around splint bone (second or fourth metatarsal) at the junction with the tarsus, distal to the tibiotarsal joint, usually on the medial aspect involving the second metatarsal at the tarsometatarsal articulation; may produce lameness and eventually, ankylosis.
See also: spavin, blood spavin, bog spavin.

bone spavin

n.
A condition in horses caused by the deposition of new bone in the hock joint and sometimes producing lameness.

spavin

diseases of the hock joint.

bone spavin
osteoarthritis or osteitis of the distal intertarsal and tarsometatarsal joints of the horse. The lesions are those of a degenerative bone disease terminating in the formation of exostoses and in ankylosis of the joint. Lameness is a constant finding. There may or may not be a local bony swelling.
spavin knife
see Warmberg spavin knife.
occult spavin
a spavin in which the clinical signs are evident but there is no external bony enlargement.
spavin test
the horse's hindlimb is held in a flexed position, with the metatarsus parallel to the ground for several minutes. Increased lameness afterwards is considered a positive test for spavin. Called also hock flexion test.