[Nail-patella syndrome]

In a case report the rare nail-patella-syndrome is presented. Typical and pathognomonic signs are: nail aplasia or dystrophy, iliac horns, hypoplasia or aplasia of the patellae, elbow dysplasia and a nephropathy with electron microscopic demonstrable collagen-like deposition in the glomerular basal membrane. The clinical relevance is determined by the course of the renal disease.