Kirners deformitet kan fejltolkes som frakturfølger eller dropfinger

Kirner's deformity of the little finger is a very rare condition affecting one in 40,000 persons. The deformity is characterized by palmar and radial deviation of the distal phalanx of the little finger. It is usually bilateral and is twice as common in women. The condition starts at puberty and does not resolve in time. Treatment is seldom required as it is mostly a cosmetic condition. This case report illustrates the need for a correct diagnosis as the condition otherwise could be mistaken as an overlooked fracture.