This is the nail-patella syndrome, an hereditary condition characterized by abnormally formed (dysplastic) or absent nails and by absent or underdeveloped (hypoplastic) kneecaps (patellae). Other features of the syndrome include: Iliac horns, Abnormality of the elbows interfering with full range of motion (pronation and supination), and Kidney dise [..]

A Syndrome of multiple abnormalities characterized by the absence or hypoplasia of the Patella and congenital Nail dystrophy. It is a genetically determined autosomal dominant trait.