Lameness (limping) can be caused by a variety of ailments in horses, and rarely are physical exam findings alone enough to definitively diagnose the cause of a lameness in most horses. However, in the case of a peroneus tertius tendon tear (like in this horse) horses will demonstrate the ability to flex the stifle while fully extending or straightening the hock at the same time. The ability to extend the hock and flex the stifle simultaneously (as shown in this picture) is not possible in horses without this injury. Therefore, identifying this is considered a classic clinical sign and diagnosis of this particular injury.
The peroneus tertius tendon is the tendon that courses along the front of the stifle to the hock. The tendon prevents hyperextension of the hock during flexion of the stifle. An injury to this tendon can sometimes result in localized swelling/effusion along the tendon acutely. Fortunately, prognosis for recovery in these horses is still considered good. Stall rest with a slow return to work over the course of 10-12 months, along with additional therapies such as shockwave will commonly lead to a full recovery. Although rare, peroneus tertius tendon ruptures in horses do still occur. This is just another reason why our doctors feel that a thorough physical exam is always of the utmost importance in any patient they see.
Can you spot the lameness?
This horse was initially sore on the right front, but when we blocked (numbed) his heel bulb he became immediately sore on the left front. Horses will often times show a limp (or lameness) on the limb that is the most sore at the time. Once the pain is removed from the limb that is the most sore, like in this case with a heel bulb block, then they can all of a sudden show us lameness in the contralateral limb. When this happens we know that the horse is actually sore on both limbs but the right front is more sore than the left. Sometimes, when a horse is sore on both front feet you will notice a stiff and stilted shuffling gait sometimes making it difficult to identify which limb the horse is sore on. The reason this horse was sore was because his heels were slightly under-run and the shoes he was wearing were putting too much pressure on his low heels. Sometimes just altering the angles of the foot or applying a special shoe that allows heel relief is all that is needed! This is why having a good farrier-veterinary relationship is so important for our equine friends!
P.S- The answer to the question was left front.
Call or text if you think your horse may be showing soreness today (208) 881-7753.
Pregnancy Reproductive Ultrasound In A Mare
For those of you who have never seen an equine fetus on an ultrasound before! This is one of the mares we artificially inseminated this year. By 60 days of gestation we are able to make out a little horse body. In this video you can see the that the fetus is laying on its back with the head being slightly out of view and to the left of the screen and the tail on the right of the screen. At 60 days the fetus is only the size of a hamster but much of the anatomy is already there and developing function!
Remember to get your mares that are in foal vaccinated with the pneumabort vaccine at 5,7, and 9 months of gestation to guard against abortion storms caused by the equine herpes virus! And 30-45 days prior to foaling we also recommend vaccinating your mare for all diseases and deworming her. This way she passes on the antibodies and immunity she creates from the vaccines onto her foal! Deworming her will also help to protect your foal against parasites that may be passed on from mom as well! Shoot us text with your email and let us know if you would like us to send you a fully detailed list of all the important recommendations for your mare and newborn foal along with more important details to be sure to know about the foaling process. This include important information to know during pregnancy both before and after she foals out. This information will help to ensure that you end up with a healthy and happy mare and foal!
After Tendon Pro Boot Application
After Tendon Pro Boot Application
Prior to boot application about 2 weeks after the initial injury.