In a prospective randomized trial of 52 RSA's with a 155° NSA comparing 10° of inferior baseplate tilt to neutral inclination, Edwards et al noted a larger percentage of patients with 10° of inferior baseplate tilt were able to achieve IR greater than the lumbosacral junction, but the difference did not reach statistical significance (77.3% vs. 60.0%; P = .381). 11 As such, inferior baseplate tilt may confer additional consequences when compared with neutral positioning.
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Factors Associated with Internal Rotation After Reverse Shoulder Arthroplasty: A Narrative Review.
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