Efficacy and safety of the new Mirror anatomic total shoulder system: a preliminary report of a prospective multicentric trial
Seminars in Arthroplasty JSES, cilt.36, sa.1, 2026 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 36 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.sart.2025.151524
- Dergi Adı: Seminars in Arthroplasty JSES
- Derginin Tarandığı İndeksler: Scopus, CINAHL, EMBASE
- Anahtar Kelimeler: Anatomic total shoulder prosthesis, Level IV, Novel prosthetic design, Retrospective Case Series, Shoulder osteoarthritis
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Background: Anatomic total shoulder arthroplasty (aTSA) is a highly effective therapy for patients with glenohumeral arthritis and an intact rotator cuff. However, implant failure due to progressive cuff pathology or loosening of the glenoid component is a well-established long-term complication. Therefore, a new prosthesis design has been developed to address these problems by “mirroring” the pairing materials improving longevity of the glenoid component and facilitating the potential conversion to reverse configuration by further design novelties. This proof-of-concept study reports on the safety and clinical efficacy of this novel Mirror anatomic total shoulder arthroplasty (Mirror aTSA) with preliminary, 1-year follow-up data. Methods: This prospective study included patients who underwent Mirror aTSA for osteoarthritis at 2 centers between January 2022 and November 2023. All patients had a follow-up of at least 12 months. Results: The study included 20 consecutive patients (median age: 69, range 29-89 years, 9 male and 11 female patients) with established shoulder osteoarthritis and a clinically/US/magnetic resonance imaging confirmed competent rotator cuff, who were operated on by 2 senior surgeons. The median follow-up was 14.2 months (range 12.1 to 26.4 months). The Constant score showed a significant improvement from a median of 49.1 points (range 24-69.7) preoperatively to a median of 81.8 points (range 69-96) at 12 months follow-up. Similarly, the Oxford Shoulder Score) and Subjective Shoulder Value also improved from 27 points (range 8–37) and 40% (range 10–75%) preoperatively to a median of 48 points (range 38–48) and 95% (range 40%–100%) postoperatively, respectively. No complications related to the procedure or prosthesis were observed. Conclusion: This study confirms that the novel Mirror aTSA provides highly satisfactory clinical and radiological results at the 12-month follow-up. While long-term results are still pending, our preliminary clinical and radiological results are encouraging.