An evaluation of the efficiency of the use of an anatomical third generation shoulder prosthesis in 102 patients.

Purpose of the study : In this study a series of 102 cases was reviewed in which a so called third generation shoulder prosthesis had been used. There was an interest in evaluating the quality and efficiency of the outcome. Material and methods : The patient population consisted of 32 men and 70 women. The mean age was 65.8 years. The mean postoperative follow-up time was 44.5 months. Indication for arthroplasty was all common degenerative and traumatic conditions of the shoulder. All patients were evaluated and analysed prospectively by a standardised protocol. The postoperative investigation consisted of a clinical examination and a radiographic analysis. We used the Constant and the Wulker Score. Results: All patients had a significant improvement in shoulder function independent of the specific indication. The mean postoperative shoulder function attained 88% as measured by the Constant score. With regard to the different indications, the significant improvement was confirmed in each of the groups. Osteoarthritis reached the highest (91%) and rheumatoid arthritis the lowest value (71%). The results of total shoulder arthroplasties was better than in hemi-shoulder arthroplasties (93% versus 86%). Conclusions : In summary, it could be demonstrated that most indications for shoulder arthroplasty can be successfully treated by using a third generation implant. Total shoulders reach better results in a mid-term follow-up.