title: An evaluation of the efficiency of the use of an anatomical third generation shoulder prosthesis in 102 patients.
abstract: OBJECTIVE
  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.
  
  
  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. 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.
authors.affiliation: Centre for Shoulder and Elbow Surgery, Airport Clinic M, Munich, Germany. pfahler@orthopaedie-flughafen.de
authors.forename: M
authors.initials: M
authors.lastname: Pfahler
authors.forename: K
authors.initials: K
authors.lastname: Meier
authors.forename: H
authors.initials: H
authors.lastname: Anetzberger
authors.forename: C U
authors.initials: CU
authors.lastname: Schulz