What is DSLD in horses?

DSLD (Degenerative Suspensory Ligament Desmitis) is a chronic, progressive connective tissue disorder in horses that most often affects the suspensory ligaments and can eventually lead to severe lameness and dropped fetlocks. Key points about DSLD: Cause: DSLD’s exact cause is not fully understood, but there is strong evidence for a genetic component, especially since it appears in particular family lines and certain breeds (notably Peruvian Pasos, Arabians, Quarter Horses, Warmbloods, and others). Pathology: The disorder is characterized by the degeneration and weakening of the suspensory ligament, sometimes involving other tendons, ligaments, and even systemic tissues (such as the cardiovascular system). Symptoms: Early DSLD signs may be subtle, including tripping, stumbling, mild or shifting lameness, behavioral changes, and back soreness. Advanced signs include: Dropped fetlocks—fetlock joints sink toward the ground, sometimes with a swollen or “sweet potato” look Stiff or unstable gait Lying down more frequently or difficulty rising Leaning/sitting on objects to relieve pain Heat or swelling in the fetlocks Distribution: DSLD commonly affects more than one limb—either both front, both hind, or all four limbs, usually without a history of injury. Diagnosis: Vets suspect DSLD when they see bilateral or multi-limb suspensory ligament changes without trauma, especially with dropped fetlocks Progression: The disease worsens over time, leading to greater pain, instability, and loss of function. Treatment & Management: There is currently no cure or proven way to halt disease progression. Supportive care focuses on: Pain relief Corrective shoeing and hoof care Controlled exercise or turnout Special diets to support connective tissue Modifications for comfort and safe mobility Prognosis: DSLD is incurable and progressively debilitating; many horses require humane euthanasia as quality of life decline. If you suspect DSLD in a horse, prompt veterinary evaluation is essential, as early management may improve comfort and delay decline. Layla Rose Ranch is a horse rescue located in North Texas. Check out more at laylaroseranch.org #horse #horserescue #animalrescue #leadershipdevelopment #adoptme #dsld