An Evaluation of the Efficiency of the Use of an Anatomical Third Generation Shoulder Prosthesis in 102 Patients

Abstract

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 Wülker 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. Osteo-arthritis 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.

Key Words:

• Shoulder prosthesis
• arthroplasty.

Additional information

Notes on contributors

M. Pfahler

Terminalstr. Mitte 18 D-85356 Munich, Germany Tel.: [phone] Fax: [phone] E-mail: [email protected]