The expanding utilization of reverse total shoulder arthroplasty (RTSA) has raised concerns about potential unknown long-term consequences. While several studies have provided long-term results for small groups of patients (<25 patients) to date, the only large series with long-term follow-up was from Dr. Walch’s group.
Bassens and colleagues have published less than 8-year follow-up on 74 patients who underwent RTSA using the Delta Xtend implant, with a follow-up rate of 84% after the exclusion of deceased patients. The authors present no revisions or implant failures beyond the early post-operative period, with an impressive 97.4% implant retention rate. However, the authors do report a decline in constant scores between 5 years and final follow-up related to a loss of abduction strength and range of motion without a change in pain. This decline mirrors that previously published by Dr. Walch. While the source of this functional decline is unclear, this study confirms this decline and identifies long-term deltoid dysfunction as a target for improvement in the future of RTSA.
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Bassens D, et al. J Shoulder Elbow Surg. 2019;doi:10.1016/j.jse.2018.11.043.
Chalmers PN, et al. Curr Rev Musculoskelet Medicine. 2016;doi:10.1007/s12178-016-9316-0.
Chalmers PN, et al. J Am Acad Orthop Sur. 2018;doi:10.5435/JAAOS-D-17-00075.
Ernstbrunner L, et al. J Bone Joint Surg Am. 2017;doi:10.2106/JBJS.17.00095.
Gerber C, et al. J Shoulder Elbow Surg. 2018;doi:10.1016/j.jse.2017.10.037.
Peter N. Chalmers, MD
Division of shoulder and elbow surgery
Department of orthopedic surgery
University of Utah
Salt Lake City
Disclosures: Chalmers reports he is a paid consultant for Arthrex and Mitek.