spavin

1. Bog spavin.
2. Bone spavin.

[Middle English spaven, from Old French espavain, swelling, perhaps of Germanic origin.]

Diseases of the hock joint.

• bone s. — 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.
• s. knife — see Warmberg spavin knife.
• occult s. — a spavin in which the clinical signs are evident but there is no external bony enlargement.
• s. 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.

The noun has one meaning:

Meaning #1: a swelling of the hock joint of a horse; resulting in lameness

Spavin may refer to:

In equine veterinary medicine:

• Bone spavin, a degenerative joint disease of the distal intertarsal and tarsometatarsal joints of the hock
• Bog spavin, a synovial distension of the tarsocrural (or tibiotarsal) joint of the hock

In people:

• Alan Spavin (b. 1942), English former footballer

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