[Step-plasty for therapy of chronic subcutaneous ruptures of extensor tendons of finger end joints].

A new method for secondary operative treatment of subcutaneous ruptures of the extensor tendons in the DIP-joint region is described. A step-cut incision is performed in the area of the regenerative tissue and the adjacent original tendon. The sutures in the longitudinal incision line compensate the tension and give better anchoring. First results show a tendency to an improved relationship between pre- and postoperative extension lag compared to other methods. Also, the method is an improvement from the aesthetical point of view and in operative practicability.