Angled BIO-RSA leads to better inclination and clinical outcomes compared to Standard BIO-RSA and eccentric reaming: A comparative study

BackgroundTwo surgical techniques were compared : Standard BIO-RSA, performed with a glenoid eccentric reaming along with a cylindric bone graft augmentation vs. the Angled BIO-RSA, performed with a glenoid concentric reaming and a defect correction with an angled bone graft.MethodsPatients undergoing RSA from January 2016 to April 2019, with one of the two techniques being performed, were retrospectively reviewed. Glenoids were classified according to Favard. Clinical (Constant-Murley, VAS and ROM) and radiographic (superior tilt correction) data were collected pre-operatively and at 12 months post-operatively.Results141 shoulders were included. Angled BIO-RSA group showed statistically significant better outcomes in terms of forward flexion (149.9 degrees Vs 139.3 degrees) and abduction (136.4 degrees Vs 126.7 degrees). The use of an Angled BIO-RSA showed a statistically significant better superior tilt correction (1.252 degrees Vs 4.09 degrees). Angled BIO-RSA, leads to a better inclination correction and a mean postoperative tilt value inferior to 5 degrees in E1 and E3 differently from standard BIO-RSA.DiscussionBoth techniques were able to correct glenoid superior inclination with excellent postoperative short-term results. However, angled BIO-RSA technique appears to be more effective in ensuring a correct inclination of the prosthetic glenoid component with better clinical outcomes.