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Optimizing Spinal Implants through Modeling


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Facchinello, Yann, Brummund, Martin, Mac-Thiong, Jean-Marc, Petit, Yvan and Brailovski, Vladimir. 22 August 2016. « Optimizing Spinal Implants through Modeling ». [Research article]. Substance ÉTS.

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Fusion surgery is frequently used for treating scoliosis, fractures or spinal cord injury. Following fusion surgery, adjacent segments complications occur in up to 40% of the patients. Because of the high stiffness of the posterior instrumentations conventionally used, a stress concentration is created at the extremities of the implants, leading to adjacent segment complications. An innovative concept of shape memory alloys rods with variable flexural stiffness is proposed to lower the stress observed on the adjacent segments. Local Joule effect annealing was used to produce biocompatible rods with decreased proximal stiffness. The variable rods combined with transverse process hooks as upper anchors decrease the stress concentration at the adjacent segment and the pullout forces on the proximal anchors.

Item Type: Non-peer reviewed article published in a journal or magazine
Refereed: No
Petit, Yvan
Brailovski, Vladimir
Affiliation: Génie mécanique, Génie mécanique
Date Deposited: 18 Apr 2017 14:23
Last Modified: 17 Jan 2020 20:54

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