Title: Stress shielding of the humerus in press-fit anatomic shoulder arthroplasty: review and recommendations for evaluation
Patrick Denard MD, Patric Raiss MD, Reuben Gobezie MD, T. Bradley Edwards MD, Evan S. Lederman MD
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.
Full article link below.
Journal of Shoulder and Elbow Surgery E-pub February 6, 2018