Mechanical Behavior of Bone Cement under Dynamic Loading

Belgherras, Mohammed Elnedhir; Sérier, B.; Benouis, Ali; Hachemi, Lalia

doi:10.3311/ppme.9672

Cited by 2 publications

(1 citation statement)

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“…In fact, the failure of the prosthesis in the absence of infection is the most recognized cause of the long term loosening of the prosthesis. When subjected to external loads, the cement becomes the weakest part of the prosthesis due to its lower mechanical properties and brittle behavior [4]. So, a deeper understanding of the factors determining the damage process in acrylic bone cement is required and the mechanical integrity of the cement must be maintained for as long as possible to reduce loosening rate.…”

Section: Introductionmentioning

confidence: 99%

Damage of the Bone-Cement Interface in Finite Element Analyses of Cemented Orthopaedic Implants

Bousnane

Benbarek

Sahli

et al. 2018

Period. Polytech. Mech. Eng.

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In orthopedic surgery and particularly in total hip arthroplasty, fixation of femoral implant is generally made by the surgical cement. Bone–cement interface has long been implicated in failure of cemented total hip replacement (THA), it is actually a critical site that affect the long-term stability and survival of prosthetic implants after implantation. The main purpose of this study is to investigate the effect of cement penetration into the bone on damage scenario at the interface. Previously most researchers have been performed to study damage accumulation in the cement mantle for different amount of cement penetration. In this work, bone–cement interface integrity has been studied for different mechanical properties. Cohesive traction separation law is used to detect contact damage between cement and bone. Results showed that a larger debonded area was predicted proximally and distally. Adhesion between bone and cement is affected mainly by cement penetration into the bone. Higher cement penetration into the bone leads to a good load transfer. A lower strength of the bone–cement interface due to a lower mechanical property results in faster interface damage. So we advise surgeons to well perpetrate the bone for long-term durability of cemented THA.

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Section: Introductionmentioning

confidence: 99%