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Bioengineering 2019, 6(1), 19; https://doi.org/10.3390/bioengineering6010019

A Study of the Biomechanical Behavior of the Implantation Method of Inverted Shoulder Prosthesis (BIO–RSA) under Different Abduction Movements

1
Laboratory of Applied Biomechanics and Biomaterials (LABAB), Department of Mechanical Engineering, National Polytechnic School of Oran Maurice Audin, Oran 31000, Algeria
2
Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier, CNRS, 34090 Montpellier, France
3
C2MA, IMT Mines Ales, Universite de Montpellier, 30100 Ales, France
*
Author to whom correspondence should be addressed.
Received: 19 December 2018 / Revised: 2 February 2019 / Accepted: 6 February 2019 / Published: 19 February 2019
(This article belongs to the Special Issue Engineering Bone-Implant Materials)
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Abstract

The shoulder is the most mobile joint of the human body, but it is very fragile; several pathologies, and especially muscular degenerations in the elderly, can affect its stability. These are more commonly called rotator cuff fractures. In the case of this type of pathology, the mobility of the shoulder decreases and pain appears. In order to restore mobility and reduce pain, implantation of an inverted shoulder prosthesis is recommended. Unfortunately, over time a notch phenomenon has been observed. In the lower position of the arm, part of the implant comes into contact with the scapula and therefore causes deterioration of the bone. Among the solutions adopted is the lateralized method with bone grafting. However, a main disadvantage of this method concerns the reconstruction of the graft in the case of prosthesis revision. In this context, the aim of the present work was to reconstruct the shoulder joint in 3D in order to obtain a bio-faithful geometry, and then study the behavior of different types of biomaterials that can replace bone grafting. To this end, three arm abduction motions were examined for three individuals. From the results obtained, it appears that grafts in ultra-high molecular weight polyethylene (UHMWPE) exhibit a behavior closer to that of bones. View Full-Text
Keywords: shoulder prosthesis; graft; finite elements; abduction; stresses; BIO–RSA shoulder prosthesis; graft; finite elements; abduction; stresses; BIO–RSA
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Mebarki, S.; Aour, B.; Jourdan, F.; Malachanne, E.; Belaghit, A.H. A Study of the Biomechanical Behavior of the Implantation Method of Inverted Shoulder Prosthesis (BIO–RSA) under Different Abduction Movements. Bioengineering 2019, 6, 19.

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