Journal article

Rotator cuff contact pressures at the tendon-implant interface after anatomic total shoulder arthroplasty using a metal-backed glenoid component

Richard Thomas, Martin Richardson, Minoo Patel, Richard Page, Morgan Sangeux, David C Ackland



BACKGROUND: Rotator cuff tears following anatomic total shoulder arthroplasty increase with duration of follow-up. This study aimed to evaluate contact pressure between the rotator cuff tendons and prosthesis after anatomic total shoulder arthroplasty and compare these with the tendon-contact pressures in the native shoulder. METHODS: Eight entire upper extremities were mounted onto a testing apparatus, and simulated muscle loading was applied to each rotator cuff tendon with the shoulder positioned in abduction, internal rotation, and external rotation. Pressure-sensitive film placed between each tendon and bone was used to measure the resultant tendon contact pressures. Experiments were re..

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Funding Acknowledgements

This project was partially funded by Lima Corporate, Italy, who exercised no control over the conduct of this study.Richard Page provides unpaid consulting for DePuy Synthes and receives research support from Integra Health. He is on the editorial board of the Shoulder and Elbow Society of Australia and International Journal of Shoulder Surgery. He is a board member of the Australian Orthopaedic Association National Joint Replacement Registry and International Shoulder Arthroplasty Consortium.David C. Ackland received partial funding for this study from Lima Corporate, Italy, who exercised no control over the study design or data analysis.