Prothèse humérale sans tige : résultats préliminaires à plus de deux ans de recul

The humeral complications in the shoulder prostheses are far to be rare. The difficulty to reproduce the anatomy of the humerus is tied up to the existence of an offset between the head and the diaphysis of the humerus. The authors conceived an implant without stem with an automatic epiphyseal centring. The authors reviewed 63 arthroplasties implanted for centring osteoarthritis or necrosis of the shoulder, with a mean follow-up of 35 months. At the time of the procedure, the mean age was 64 years and the preoperative Constant score was 29.8. The Constant score was 75. The improvement of the active antepulsion was 50° and 20° for the external rotation. The final X-rays analysis did not show a lucent line or a migration of the implant. So, it is an easy prosthesis to implant with a faithful reproduction of the anatomy. The clinical results are surimposed to those of the literature with an excellent fit at midterm follow-up.