Anna Krukenberg1, Julie McBirnie2, Stefan Bartsch3, Nikolaus Böhler4, Ernst Wiedemann5, Bernhard Jost6, Pierre Mansat7, Pierre Bellon-Champel8, Renzo Angeloni9, Markus Scheibel10. 1. Department of Shoulder and Elbow Surgery, Charité-Universitaetsmedizin Berlin, Berlin, Germany. 2. Department of Orthopaedics, New Royal Infirmary of Edinburgh, Edinburgh, UK. 3. Praxis am Wall Rinteln, Rinteln, Germany. 4. Allgemeines Krankenhaus der Stadt Linz, Kepler Universitaetsmedizin, Linz, Austria. 5. Orthopedic Surgery Center Munich (OCM), München, Germany. 6. Department of Orthopaedics and Traumatology, Kantonsspital St Gallen, St. Gallen, Switzerland. 7. Centre Hospitalier Universitaire Toulouse-Hôpital Purpan, Toulouse, France. 8. Groupe Chirurgical Thiers, Grenoble, France. 9. Universitaria Careggi-Centro Traumatologico Ortopedico, Florence, Italy. 10. Department of Shoulder and Elbow Surgery, Charité-Universitaetsmedizin Berlin, Berlin, Germany. Electronic address: markus.scheibel@charite.de.
Abstract
BACKGROUND: The aim of this prospective multicenter study was to evaluate clinical and radiologic results of a new metaphyseal anchored system. This system features a different anchor geometry that potentially leads to better bony integration and less loosening. METHODS: From November 2012 until December 2015, 148 patients (151 shoulders) were treated with the Sidus Stem-Free Shoulder System at 9 centers in Europe. The main indication was primary osteoarthritis (80.1%). This analysis only includes patients diagnosed with primary osteoarthritis (n = 121). A clinical evaluation was performed using the Constant-Murley score, Subjective Shoulder Value, American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form, and range of motion. Radiologic assessment was based on the occurrence of radiolucent lines and signs of implant migration, osteolysis, loosening, and heterotopic ossification. RESULTS: We evaluated 105 patients after a follow-up period of 2 years. There were 53 women and 52 men. The average age was 64 years. Total shoulder arthroplasty was performed in 73 cases and hemiarthroplasty in 32. The Constant-Murley score improved from 26 points preoperatively to 70 points at 2 years' follow-up (P < .001). The Subjective Shoulder Value increased from 34% to 84% (P < .001), and the American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form increased from 34 points to 86 points (P < .001). Radiologically, neither migration nor loosening was found. However, radiolucent lines of 2 mm or greater could be detected around the glenoid in 2 cases, but none of them have had clinical relevance yet. The overall complication rate was 6.7%, and the revision rate was 0%. CONCLUSION: Patients with the Sidus Stem-Free Shoulder System achieve good clinical and radiologic short-term results that are comparable with the results of other stem-free shoulder implants.
BACKGROUND: The aim of this prospective multicenter study was to evaluate clinical and radiologic results of a new metaphyseal anchored system. This system features a different anchor geometry that potentially leads to better bony integration and less loosening. METHODS: From November 2012 until December 2015, 148 patients (151 shoulders) were treated with the Sidus Stem-Free Shoulder System at 9 centers in Europe. The main indication was primary osteoarthritis (80.1%). This analysis only includes patients diagnosed with primary osteoarthritis (n = 121). A clinical evaluation was performed using the Constant-Murley score, Subjective Shoulder Value, American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form, and range of motion. Radiologic assessment was based on the occurrence of radiolucent lines and signs of implant migration, osteolysis, loosening, and heterotopic ossification. RESULTS: We evaluated 105 patients after a follow-up period of 2 years. There were 53 women and 52 men. The average age was 64 years. Total shoulder arthroplasty was performed in 73 cases and hemiarthroplasty in 32. The Constant-Murley score improved from 26 points preoperatively to 70 points at 2 years' follow-up (P < .001). The Subjective Shoulder Value increased from 34% to 84% (P < .001), and the American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form increased from 34 points to 86 points (P < .001). Radiologically, neither migration nor loosening was found. However, radiolucent lines of 2 mm or greater could be detected around the glenoid in 2 cases, but none of them have had clinical relevance yet. The overall complication rate was 6.7%, and the revision rate was 0%. CONCLUSION:Patients with the Sidus Stem-Free Shoulder System achieve good clinical and radiologic short-term results that are comparable with the results of other stem-free shoulder implants.
Authors: Maciej J K Simon; Jennifer A Coghlan; Jeff Hughes; Warwick Wright; Richard J Dallalana; Simon N Bell Journal: BMC Musculoskelet Disord Date: 2022-01-15 Impact factor: 2.362