1. Congenital dislocation of the patella presents an entirely different operative problem than does the recurrent type of dislocation.
2. Extensive joint changes may occur as the condition progresses.
3. The operation of Conn for congenital dislocation of the patella offers a satisfactory prognosis.
4. The family history of a "knee condition" in four successive generations suggests an element of heredity on the maternal side.