Journal Pre-proof Symptomatic Foreign Body Reaction Secondary to Subacromial Balloon Spacer Placement: A Case Report Emilio Calvo, MD, PhD, MBA, Maria Valencia, MD, PhD, Jose Angel Merino-Garcia, MD, Gonzalo Luengo-Alonso, MD PII: S1058-2746(20)30299-8 DOI: https://doi.org/10.1016/j.jse.2020.02.029 Reference: YMSE 5116 To appear in: Journal of Shoulder and Elbow Surgery Received Date: 11 February 2020 Accepted Date: 12 February 2020 Please cite this article as: Calvo E, Valencia M, Merino-Garcia JA, Luengo-Alonso G, Symptomatic Foreign Body Reaction Secondary to Subacromial Balloon Spacer Placement: A Case Report, Journal of Shoulder and Elbow Surgery (2020), doi: https://doi.org/10.1016/j.jse.2020.02.029. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier Inc. on behalf of Journal of Shoulder and Elbow Surgery Board of Trustees.