CONDITIONS OR SYNDROMES WITH WHICH CAMPTODACTYLY MAY BE ASSOCIATED Inheritance Associated Condition or Syndrome

Camptodactyly is the name introduced by Landouzy (1906) for one of the varieties of constitutionally crooked digits. Camptodactyly almost always affects the fifth finger, the characteristic lesion being a flexion contracture of the proximal interphalangeal joint. The degree of flexion may vary from a very slight deformity to an almost right-angled bend; it is seldom more than this. The fourth to second fingers, in decreasing order of frequency, may be affected similarly, the extent of the deformity being progressively less in the more radial fingers. Often there is hyperextension of the metacarpophalangeal joints of the affected fingers, and occasionally the proximal interphalangeal joints of