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A comprehensive methodology to assess human bone transversal toughness based on macroscopic specimens, the compliance method, and 3D bio-faithful numerical simulations.
J Mech Behav Biomed Mater
December 2024
Aix Marseille Université, Université Gustave Eiffel, LBA, Marseille, France. Electronic address:
This study proposes a method for assessing the transverse toughness of human long-bone cortical tissue. The method is based on a three-point bending test of pre-notched femur diaphysis segments, post-processed using the compliance method coupled with numerical simulations. Given the cracking nature of bone and if cracking processes remain confined to the crack tip, it is assumed that the compliance method can be used.
View Article and Find Full Text PDFEvaluation of the lengthening of the magnetically controlled growing rods in juvenile and early-onset scoliosis.
Orthop Traumatol Surg Res
December 2024
Department for Orthopaedics, Heidelberg University Hospital, Heidelberg, Germany. Electronic address:
Introduction: The treatment of early onset scoliosis (EOS) has seen significant advancements, particularly with the introduction of magnetically controlled growing rods (MCGR). However, a discrepancy between reported and actual rod lengthening during treatment has raised concerns.
Hypothesis: This retrospective study aims to investigate the disparity between reported and actual lengthening of MCGR and to identify factors contributing to the failure of the lengthening process.
On-demand Reprogrammable Mechanical Metamaterial Driven by Structure Performance Relations.
Adv Mater
December 2024
Institute of Solid Mechanics, Beihang University, Beijing, 100191, China.
The physical reprogrammability of metamaterials provides unprecedented opportunities for tailoring changeable mechanical behaviors. It is envisioned that metamaterials can actively, precisely, and rapidly reprogram their performances through digital interfaces toward varying demands. However, on-demand reprogramming by integration of physical and digital merits still remains less explored.
View Article and Find Full Text PDFImpact of postural variations on trunk rotation angle during the forward bending test in adolescents idiopathic scoliosis.
Spine Deform
December 2024
College of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, China.
Purpose: To evaluate the impact of different positions of adolescent idiopathic scoliosis (AIS) patients and examiners on the angle of trunk rotation (ATR) measured during the forward bending test (FBT) with Scoliometer.
Methods: Adolescents who had come to the hospital for outpatient were recruited. Considering the location of the subject and the examiner, four postural combinations of ATR were measured.
Experimental and Numerical Analysis of the Quasi-Static and Dynamic Behavior of Silicate Materials.
Materials (Basel)
November 2024
Laboratory of Microstructure Studies and Mechanics of Materials (LEM3), ENSAM-Arts et Métiers ParisTech, UMR CNRS 7239, Lorraine University, 57078 Metz, France.
This study investigated both the static and dynamic behavior of silicate materials through a series of experimental and numerical tests. Compression tests were conducted on cubic samples, three-point bending tests on beams, and perforation tests on silicate plates. In the compression tests, stress-strain curves were generated, enabling the calibration of the Concrete Damaged Plasticity (CDP) model for silicate materials.
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