Comparative analysis of international standards for the fatigue testing of posterior spinal fixation systems

Villa, Tomaso; Barbera, Luigi La; Galbusera, Fabio

doi:10.1016/j.spinee.2013.08.032

Cited by 47 publications

(40 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As regard the anterior column stiffness, few studies have investigated its contribution to the human spine in vitro [19], in vivo [20] and in silico using FE models [9,10,25,32]. Additionally, despite only La Barbera and colleagues [9,10] performed a direct comparison between the current standards and more realistic spine segments, their models hardly reproduce the loading conditions met during simple everyday life activities.…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, despite only La Barbera and colleagues [9,10] performed a direct comparison between the current standards and more realistic spine segments, their models hardly reproduce the loading conditions met during simple everyday life activities.…”

Section: Discussionmentioning

confidence: 99%

“…fractured VB), as well as pathological-treated IVDs/FSUs (e.g. IVD cage, VB replacement) are limited to few numerical studies [9,10,32], which are difficult to compare to any clinically relevant condition.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, to the author's knowledge, few efforts have been made up to now to ensure that the internal loads applied to the implant during testing are representative of the in vivo clinical use [4,9,10].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Preclinical evaluation of posterior spine stabilization devices: can the current standards represent basic everyday life activities?

Barbera

Galbusera

Wilke³

et al. 2016

Eur Spine J

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preclinical evaluation of posterior spine stabilization devices: can the current standards represent basic everyday life activities?

Barbera

Galbusera

Wilke³

et al. 2016

Eur Spine J

Self Cite

View full text Add to dashboard Cite

show abstract

“…Such goals are being investigated in several European and Italian research projects, such as the experimental setup to test the strength of the pedicle screws and fixation rods used in the deformity correction surgery. (More information can be found in [14] and [15].) FIgure 6 an evaluation of the risk of stent rupture in cases of peripheral vascular angioplasty.…”

Section: The Bioengineering Community In Italy Is Very Active In the mentioning

confidence: 99%

Moving Along: In biomechanics, rehabilitation engineering, and movement analysis, Italian researchers are making great strides

et al. 2015

View full text Add to dashboard Cite

In Italy, biomechanics research and the analysis of human and animal movement have had a very long history, beginning with the exceptional pioneering work of Leonardo da Vinci. In 1489, da Vinci began investigating human anatomy, including an examination of human tendons, muscles, and the skeletal system. He continued this line of inquiry later in life, identifying what he called "the four powers--movement, weight, force, and percussion"--and how he thought they worked in the human body. His approach, by the way, was very modern--analyzing nature through anatomy, developing models for interpretation, and transferring this knowledge to bio-inspired machines.

show abstract

Clinically relevant finite element technique based protocol to evaluate growing rods for early onset scoliosis correction

et al. 2020

View full text Add to dashboard Cite

Objective: The emergence of distraction-based growing rods has provided the means to reduce the progression of spinal deformity in early onset scoliosis (EOS). The current protocols for evaluating spinal implants (ie, ASTM-F1717 and ISO-12189) were developed for fusion/ dynamic devices. These protocols do not feature long unsupported rod lengths subjected to distraction. Due to the unsuitability of the existing guidelines for the evaluation of growing rods, a new distraction-based finite element protocol is presented herein for the first time. Method: A vertebrectomy (VO) model from current protocols was modified to accommodate multi-spinal segments (ie, MS model) in which springs with appropriate stiffness were simulated in between the plastic blocks. To assess the efficacy of the protocol, two different computational studies were conducted: (a) compression-bending (MS-CB) with no distraction, and (b) distraction followed by compression-bending (MS-D + CB). In each study, the model with no axial connector (rods-only) was modified to include a) 80-mm long tandem (LT) connectors, and b) side-by-side (SBS) connectors. Stiffness and yield loads were calculated as per ASTM-F1717 guidelines and compared with the corresponding VO models with no distraction. In the MS-D + CB models, distraction was applied at the top block, stretching the spring-block construct in a simulation of scoliosis surgery prior to locking the construct at the connector-rods' interface. Results: MS-CB models predicted higher stiffness and yield loads, compared to the VO models. The locking mechanism produced pre-existing stresses on the rod-connector interface, which caused a shift in the location of high-stress regions to the distraction site. Distraction led to a decrease in the construct's stiffness and yield load. Discussion: The proposed protocol enables the simulation of clinical parameters that are not feasible in the F1717 models and predicted stress patterns in the hardware consistent with observed clinical failures.

show abstract

Comparative analysis of international standards for the fatigue testing of posterior spinal fixation systems

Cited by 47 publications

References 15 publications

Preclinical evaluation of posterior spine stabilization devices: can the current standards represent basic everyday life activities?

Preclinical evaluation of posterior spine stabilization devices: can the current standards represent basic everyday life activities?

Moving Along: In biomechanics, rehabilitation engineering, and movement analysis, Italian researchers are making great strides

Clinically relevant finite element technique based protocol to evaluate growing rods for early onset scoliosis correction

Contact Info

Product

Resources

About