The Ins and Outs of Navicular Syndrome

Navicular syndrome is a very common cause of forelimb lameness. It’s a complex condition that causes pain in the navicular bone and surrounding structures in the foot. The degree of lameness can vary from mild to severe, and it often affects both legs. Signs can range from decreased performance, a short, choppy gait, and an obvious head bobbing lameness. Some breeds, such as Quarter Horses, Thoroughbreds, and Warmbloods, are more likely to develop this condition. 

Diagnosing navicular syndrome in a horse starts with a good lameness exam. Your veterinarian will watch your horse at a walk and trot (both in a straight line and a circle) to determine if the horse is lame and which leg is affected. They may also use a nerve block and numb part of the leg to narrow down whether or not the foot is the area causing pain. If the cause of lameness is identified as the foot, radiographs will help them assess the navicular bone and the area around it. In more complex or subtle cases, more advanced imaging such as CT or MRI can help to identify issues in this region.

There is no cure for navicular syndrome, but fortunately there are many options to help manage the condition. The first step for any case is to have appropriate, corrective trimming. Many horses also benefit from corrective shoeing as well. Your veterinarian can work with your farrier to develop an appropriate plan for your horse. There are also many options to help reduce navicular related pain. One option is Firocoxib/Equioxx, which is an anti-inflammatory medication that can be given daily for pain relief. Joint injections in this area can also help relieve pain and inflammation. Another popular option for treating navicular syndrome is Osphos. This medication is given as an intramuscular injection and helps alleviate pain by preventing breakdown and bone loss of the navicular bone. Your veterinarian can help guide you through the best treatment options for your horse and how to best manage the condition.

Written by Dr. Maddy Gehin 4/8/2025