[Partial replacement of the humerus].

Based on twelve cases, this paper reviews the possibilities of partial replacement of the humerus. In 6 cases an interpolation was successfully performed replacing a resected part of the humeral shaft while maintaining the shoulder and elbow joint. The interpolated material is polyethylene, centrally reinforced by metal. A resection of up to 17 cm was performed. The longest period of observation is more than 2 years. This operative procedure is preferred to the methods so far used in cases of extensive destruction of the humeral shaft. Primarily, osteolyses are an indication for this type of operation.