Journal
JOURNAL OF SHOULDER AND ELBOW SURGERY
Volume 27, Issue 6, Pages 1139-1147Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.jse.2017.12.020
Keywords
Glenohumeral arthritis; stress shielding; total shoulder arthroplasty; short stem; stemless; radiographic adaptations; humeral stem
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Uncemented press-fit humeral stems were developed with the goal of decreasing operative time, preserving bone stock, and easing revision. In recent years, short stems and stemless humeral implants have also become available. These press-fit humeral implants have varying designs that can lead to changes in stress distribution in the proximal humerus. Such stress shielding manifests as bony adaptations and may affect long-term functional outcome and the ability to perform revision. However, current studies of humeral fixation during total shoulder arthroplasty are complicated because a variety of classification systems have been used to report findings. The purpose of this report is to review the current literature on press-fit fixation of the humeral component during total shoulder arthroplasty and propose minimum requirements for radiographic descriptions of stress shielding. (c) 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. All rights reserved.
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