Semiconstrained elbow prostheses with special reference to the GSB III prosthesis.

Fully constrained metal-to-metal elbow prostheses are not used anymore because of a high loosening rate. Today semiconstrained or condylar prostheses are the two possibilities when replacement of a destroyed elbow joint is considered. A careful analysis of the most recent publications in the world literature reveals a high complication rate for both types of prostheses, each one having specific advantages and disadvantages. The Gschwend-Scheier-Bähler (GSB) III prosthesis is a semiconstrained prosthesis, requires little bone resection, and is therefore easily salvaged. The results in regard to pain relief and improvement in range of motion are satisfactory in a high percentage of patients. The rate of lasting complications is lower than with most of the other prostheses. The authors' transtricipital approach is also a factor that contributes to the high success rate. In case of a failed arthroplasty the authors' method of reconstructing the humeral condyles allows a better salvage.