Abstract
Introduction
Reverse shoulder arthroplasty (RSA) is a common treatment for proximal humeral fractures (PHFs) in the elderly. This study evaluates the influence of tuberosity healing (TH) on functional outcome following a 135° humeral inclination RSA for PHFs.
Methods
Retrospectively, all patients with an acute PHF treated with a 135° humeral inclination RSA at four centers during a three-year period were followed up. Constant score (CS), TH and glenoid notching were analyzed.
Results
Sixty-four of 100 patients (64%) with a mean age of 76 ± 7 years were available for follow-up at 22 ± 8 months. The mean-adjusted CS was 72%. TH of the greater tuberosity (GT) was 77% and resulted in significantly improved forward flexion (128° vs. 92°; p = 0.003), external rotation (33° vs. 17°; p = 0.03) and adjusted CS (78% vs. 54%, p < 0.005). GT healing rate was 86% with neutral, 70% with lateralized and 33% with an inferior eccentric glenosphere. TH of the lesser tuberosity was 79%. There was 8% complication and 3% revision rate; implant survival was 100%.
Conclusion
RSA with 135° humeral inclination for PHFs leads to good functional outcome, reproducible results and a high rate of TH. The short-term revision rate is low. TH is associated with improved ROM and functional outcome.
Level of evidence
III.
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Funding
This work was supported by Arthrex. Drs. Lehmann, Cohen, Steinbeck and Denard are consultants for Arthrex, Inc.
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Schmalzl, J., Jessen, M., Holschen, M. et al. Tuberosity healing improves functional outcome following primary reverse shoulder arthroplasty for proximal humeral fractures with a 135° prosthesis. Eur J Orthop Surg Traumatol 30, 909–916 (2020). https://doi.org/10.1007/s00590-020-02649-8
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DOI: https://doi.org/10.1007/s00590-020-02649-8