Degenerative suspensory ligament desmitis is a progressive, degenerative condition found in several breeds. It was first discovered in Peruvian Horses, and early-onset DSLD was recognized in some family lines in the 1970s. Many people still think of this as a gaited-horse problem. In recent years, however, DSLD has been diagnosed in many breeds, including Thoroughbreds, Arabians, Quarter Horses and warmbloods.
“DSLD is seen in the suspensory ligament—a degeneration of the ligament itself,” says Sabrina Brounts, DVM, MS, PhD, professor of Large Animal Surgery at the University of Wisconsin-Madison, School of Veterinary Medicine.
The suspensory ligament starts just below the knee in a horse’s front legs and the hock in the hind legs. It runs down the back of a horse’s cannon bone—the bone from the knee or hock to the…