This rare disease, also called MPS IV, prevents the body from breaking down certain sugar molecules. Morquio syndrome is a rare, inherited metabolic disorder that most often affects the skeleton. Also known as MPS IV, Morquio syndrome is part of a group of diseases called mucopolysaccharidosis (MPS). MPS is defined by the body's inability to… Continue reading Morquio Syndrome – Prevalence, Symptoms & Complications