Brailsford disease

Morquio syndrome, also known as Mucopolysaccharidosis Type IV (MPS IV), is a rare metabolic disorder in which the body cannot process certain types of sugar molecules called glycosaminoglycans (AKA GAGs, or mucopolysaccharides). In Morquio syndrome, the specific GAG which builds up in the body is called keratan sulfate. [Source: Wikipedia ]

Synonyms
Osteonecrosis of the head of the radius
Is A
Site-specific avascular necrosis