
Because they are so rare, the peculiarities of Spanish mustangs are utterly alien to many experienced horse people. Spanish mustangs have a much greater range of motion in their legs than do modern breeds. This extended range of motion carries with it a huge propensity for the stifle joints to lock and slip among young horses and those who stand for extended periods of time.
The result can be terrifying for a new owner of Spanish mustangs. A horse with a locked stifle has a hind leg extended and immobilized as it pulls itself around on three legs. The first time that I saw it happen I immediately began to make plans to have the horse put down. I was certain that it must be in horrible agony.
The agony is not only not horrible, it is nonexistent. Nearly every one of the young Spanish horses that I have raised have gone through a stage, often at about 18 months old, when their stifle joints were locked several mornings each week.
As the horses age the locking ended in every case as long they are given the opportunity to exercise and strengthen the joint. Persa, my Shackleford mare, never showed a completely locked stifle, but her back feet at times would quickly snap up toward her stomach as the stifles slipped.
Of course, exercise was the solution. I simply put her in a small pen that had a sloped side. The 'problem" took care of itself in about 10 days.
Manteo, one of my Corolla stallions, has gained way too much weight as the summer ended and he was not ridden as often. He became a round bale potato that did not take advantage of the pen that he shared with the other stallions and geldings. As a result, his stifle is now subject to short term locking.
The solution is simply more exercise. Of course, the exercise begins light and slowly progress to heavier work, as would be expected with every form of exercise.
The problem is that too few horse owners and veterinarians understand this aspect of Spanish mustang physiology. Stable rest might seem a logical response to a slipping stifle, but it does nothing to strengthen the joint. Because the slippage generally appears in younger horses it fuels the absurd belief that horses need to be nearly geriatric before they are old enough to be ridden humanely.
Horses suffer as a result of their owners not staying in front of the curve on equine health issues. As a result too many horses suffer from obesity, lameness, and stress induced "vices" because they are raised according to the state of the art horse care of 1952.
Theodore Roosevelt and his father rejected the doctor's advice that young Theodore's fragile health made it imperative that he rest and refrain from all physical challenges. Had he done so surely he would have died a young death.
Too many horses, live in sheltered, quiet misery because their well intentioned owners do not understand what it takes to produce a truly healthy horse. Those horses are the victims of being loved to death.
If only those who thoughtlessly advocate "rest" as the proper "care" for all issues equine could simply take the advise that Archie Bunker so often gave his wife.
"Edith--stifle yourself."