If your horse is unfortunate enough to fall victim, having some knowledge of the affliction will help you to recognize the condition in the early stages and communicate with your veterinarian and farrier throughout the treatment process. The terms laminitis and founder are sometimes used interchangeably, however, it is important to know the difference. The hoof has sensitive and insensitive laminae. The sensitive laminae are connected to the Coffin Bone and the insensitive laminae are connected to the hoof wall. Laminitis is not founder but a condition that can lead to founder.
Founder occurs when the inflamed laminae begin to die allowing the Coffin Bone to sink or rotate.
When a horse founders, he is in serious trouble. It is important to recognize the first symptoms of laminitis. The symptoms may be pronounced and obvious or they may be very subtle. Your horse may appear to be slightly stiff, especially in the front end. If you are unsure, put a halter and lead rope on your horse and lead him out.