Clinical and radiographic outcomes of the SMR TT system - a novel convertible all-polyethylene glenoid with hybrid fixation in anatomic total shoulder arthroplasty: minimum 5-year follow-up.

Background: Modern anatomic total shoulder glenoid implants must achieve sound fixation, low rate of revision, and ease of conversion to a reverse shoulder replacement should the clinical need arise. This study presents the medium term follow-up of a consecutive series of patients being treated for primary glenohumeral joint osteoarthritis with a hybrid convertible glenoid implant. Methods: This was a retrospective review of a prospective series of patients treated with an anatomic total shoulder replacement with the SMR TT Hybrid Glenoid Implant (LimaCoporate, San Daniele del Friuli). The inclusion criterion was a minimum of 5 years follow-up. Patients were excluded from this review if they had less than 5 years of follow-up. Clinical outcomes were assessed using the American Shoulder and Elbow Surgeons score and the Oxford Shoulder Score, while range of motion was measured using a goniometer. Standardized Grashey and axillary radiographs were analyzed for evidence of implant loosening or component failure. Results: Forty-two consecutive aTSA performed in 41 patients who received an SMR TT Hybrid Glenoid at a single center between August 2017 and June 2020. There were 24 female patients, and mean age was 68 years (standard deviation: ±8). The mean follow-up duration was 69 months (standard deviation: ±13). The mean pre-operative and post-operative American Shoulder and Elbow Surgeons scores were 27 ± 12 and 87 ± 15, respectively ( Conclusion: Our study demonstrates that patients treated with an anatomic total shoulder arthroplasty with SMR TT Hybrid Glenoid had excellent clinical and radiological outcomes at a minimum of 5-year follow-up.