Congenital attenuation of the extensor tendon central slip.

A congenital attenuation of the central slip results in a flexion attitude of the affected digit that can be confused with more common conditions such as congenital trigger finger or camptodactyly. It is a mild form of congenital absence of the central slip. The diagnosis is discussed. Treatment consists of limited excision of the attenuated area and suturing of the normal components of the central slip. The author has treated five cases in the last 10 years.