Is holding a foreleg a good way to restrain a horse?

Holding a foreleg — lifting one front foot off the ground so the horse is standing on three legs — is a legitimate and commonly used restraint technique for specific situations, and it is genuinely effective when applied correctly. Whether it is a good choice depends entirely on the specific situation, the specific procedure being performed, the specific horse, and the handler's ability to apply and maintain the technique safely. The mechanical principle is straightforward — a horse standing on three legs has significantly reduced ability to kick with the remaining hind legs because he must maintain his balance and cannot shift his weight freely enough to generate the power or range of motion that a full kick requires. For procedures performed on or near the hind legs — farrier work on the hind feet, veterinary examination of the hind limbs, wound treatment — holding the foreleg on the same side as the procedure reduces the horse's ability to kick toward the person working on the hind end. The technique requires the handler to be positioned correctly. Standing at the horse's shoulder facing the rear, lifting the foreleg and supporting it with both hands around the cannon bone, and maintaining that position steadily gives the handler the best mechanical advantage and the safest position relative to the horse. A handler who cannot hold the leg firmly when the horse pulls, or who drops the leg at a critical moment, has removed the restraint at exactly the wrong time. The situations where foreleg restraint is not appropriate are as important to understand as where it works. A horse that is genuinely panicking or fighting strongly against restraint is not a candidate for foreleg restraint — the technique works through limiting the horse's balance and movement options, not through controlling a horse that has decided to resist at full effort. Sedation administered by a veterinarian is the appropriate restraint for genuinely fractious horses or procedures significant enough that the horse's discomfort will reliably overcome the mechanical limitation of three-point standing. The foreleg hold is also not a substitute for correct habituation and desensitization for procedures that the horse finds aversive. Investment in desensitization training produces a safer situation for every future interaction rather than requiring restraint management for the horse's entire life.