What are the causes of Bog Spavin?

The causes of a Bog Spavin can be conformational, which leads to weekness of the hock and increased production of Synovial fluid.  In these cases both limbs are affected.  Where one limb only is affacted, the cause tends to be a consequence of a sprain or an underlying problem within the joint.

Swelling will occur on the middle back surface of the hock, with smaller swellings on each side of the joint near the back.  A bog spavin, often does not result in lameness and an uncomplicated bog spavin often will not interfere with the usefulness of a working horse.  Some unsightly blemishes  may hinder the horse being used for showing.  

A Bog Spavin should be assessed by your local Vet.  If necessary they can be drained of excess fluid by needle and syringe by your Vet.  Bog Spavins tend to re-occur, especailly where poor conformation is the cause.  Where there is bone and cartilage Involvement surgical involvement may be indicated. 

What is a Bone Spavin?

A Bone Spavin is a degenerative condition relating to the loss of cartilage of the Joint (osteoarthritis) or inflammation of the bony tissue of the hock joint. The Upper Middle Part is most commonly affected and will lead to lameness, although this is often not picked up, as it tends to manifest as a dragging of the toe and rest the the leg slightly on the toe when standing.  In mild cases the lameness may resolve during exercise and return after rest.  New bone formation near the joint can lead to the bone fusing and the hence the spontaneous resolution of the lameness.

What are the causesof Bone Spavin?

Causes are not always clear, but can be genetic, excessive jarring or mineral imbalance.  While any breed can be affected it is most common in Quarter Horses and Standard Breds.

Diagnosis is based on history, physical examination and x-rays to look for joint degeneration and bony growths. In the early stages, Injection of corticosteriods is often used with work after treatment to hasten the fusing of the joint.  Fusion may also be undertaken surgically.

Corrective shoeing to raise the heel and roll the toe may also be undertaken but rarely resolves the lameness.

Supplements would include a balanced Vitamin and Mineral supplement, a bone and joint supplement and anti-inflammatory treatments, be they bute or herbal options such as Vetrofen or Equigesic, or raw herbs.