Objectives: Regaining and maintaining sternal stability are key to recovery after cardiac surgery and resuming baseline quality of life. Montage (ABYRX) is a moldable, calcium phosphate-based putty that adheres to bleeding bone, hardens after application, and is resorbed and replaced with bone during the remodeling process. We evaluate the feasibility, safety, and efficacy of enhanced sternal closure with this novel putty to accelerate recovery in patients after sternotomy.
Methods: A single-center, single-blinded, randomized controlled trial was performed (NCT03365843). Patients undergoing elective cardiac surgery via sternotomy received sternal closure with either Montage bone putty and wire cerclage (enhanced sternal closure; n = 33) or wire cerclage alone (control; n = 27). Standardized patient-reported outcomes assessed health-related quality of life (EQ-5D Index) and physical disability (Health Assessment Questionnaire). A Likert-type 11-point scale quantified pain. Spirometry assessed respiratory function. Patients reached 6-week follow-up, with 1-year follow-up for safety end points.
Results: There were no device-related adverse events. Enhanced sternal closure improved physical functional recovery (reduced Healthcare Index and Quality) and quality of life (increased EQ-5D Index) at day 5/discharge, week 2, and week 4. Enhanced sternal closure reduced incisional pain while resting, breathing, sleeping, and walking at day 5/discharge. Enhanced sternal closure reduced chest wall and back pain at day 3 and day 5 discharge. A higher proportion of patients with enhanced sternal closure recovered to 60% of their baseline forced vital capacity by day 5/discharge. Enhanced sternal closure shortened hospital stay.
Conclusions: Enhanced sternal closure improves and accelerates postoperative recovery compared with conventional wire closure. Earlier discharge may provide substantial cost benefits for the healthcare system.
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