Multi-scale topology optimisation design and mechanical property analysis of porous interbody fusion cage.

Background: Titanium (Ti) and polyether ether ketone (PEEK) interbody fusion cages cause postoperative stress shielding problems. The porous cage design is one of the solutions advanced to mitigate this problem.

Objective: Exploring the mitigation of stress shielding with a porous interbody fusion cage after surgery for idiopathic scoliosis.

Kinetic characterization of adolescent scoliosis patients with Lenke 1B.

: The purpose of this study was to investigate dynamic responses of Lenke1B+ spines of adolescent scoliosis patients to different frequencies. : Modal analysis, harmonic response analysis and transient dynamics of a full spine model inverted by the finite element method using Abaqus. : The first-order axial resonance frequency of 4.

Finite element method-based study for spinal vibration characteristics of the scoliosis and kyphosis lumbar spine to whole-body vibration under a compressive follower preload.

Purpose: To analyze the dynamic response of the lumbosacral vertebrae structure of a scoliosis spine and a kyphosis spine under whole-body vibration.

Methods: Typical Lenke4 (kyphosis) and Lenke3 (scoliosis) spinal columns were used as research objects. A finite element model of the lumbosacral vertebrae segment was established and validated based on CT scanning images.

Study of the mechanism of action of sand therapy on atherosclerosis based on the two-phase flow-Casson model.

Background: Sand therapy is a non-pharmacological physiotherapy method that uses the natural environment and resources of Xinjiang to treat through the heat transfer and magnetic effects of sand.

Objective: Employing the two-phase flow-Casson blood flow model, we investigate the mechanism of atherosclerosis prevention via sand therapy, offering a biomechanical theoretical rationale for the prevention of atherosclerosis through sand therapy via the prism of computational fluid dynamics (CFD).

Methods: Sand therapy experiments were conducted to obtain popliteal artery blood flow velocity, and blood was considered as a two-phase flow composed of plasma and red blood cells, and CFD method was applied to analyze the hemodynamic effects of Casson's blood viscosity model before and after sand therapy.

Topological optimization of anterior cervical plate (ACP) and its biomechanic characteristics.

Background: Currently, quadrilateral anterior cervical plate (QACP) is a highly prevalent ACP.

Objective: This study aims to design a novel ACP using topology optimization (TOACP).

Methods: A completed model for C1-C7 cervical segments was established and validated.

[Macroscopic and mesoscopic biomechanical analysis of the bone unit in idiopathic scoliosis].

To investigate the effects of postoperative fusion implantation on the mesoscopic biomechanical properties of vertebrae and bone tissue osteogenesis in idiopathic scoliosis, a macroscopic finite element model of the postoperative fusion device was developed, and a mesoscopic model of the bone unit was developed using the Saint Venant sub-model approach. To simulate human physiological conditions, the differences in biomechanical properties between macroscopic cortical bone and mesoscopic bone units under the same boundary conditions were studied, and the effects of fusion implantation on bone tissue growth at the mesoscopic scale were analyzed. The results showed that the stresses in the mesoscopic structure of the lumbar spine increased compared to the macroscopic structure, and the mesoscopic stress in this case is 2.

Dynamic effects of eifferent nail placement strategies on LenkeC scoliosis.

Background: Although the internal fixation technique for scoliosis is effective, there is a great risk of nail placement in actual operation.

Objective: To compare the effects of three different nail placement strategies on LenkeC patients with scoliosis under cyclic loading.

Methods: Firstly, the finite element model was established by using CT scanning images and X-ray images of patients with LenkeC scoliosis.

Comparison of biomechanical performance of single-level triangular and quadrilateral profile anterior cervical plates.

The quadrilateral anterior cervical plate (ACP) is used extensively in anterior cervical discectomy and fusion (ACDF) to reconstruct the stability of the cervical spine and prevent cage subsidence. However, there have been no comparison studies on the biomechanical performance of quadrilateral ACP and triangular ACP. The objective of this study is to investigate the functional outcomes of quadrilateral ACP and triangular ACP usage in ACDF surgery.

Effect studies of Uyghur sand therapy on the hemodynamics of the knee-joint arteries.

This paper studies the effect of Uyghur sand therapy on dynamics of arterial flow of knee joints via experiments and numerical simulations. Experiments have been carried out on 30 volunteers, with their diameter and flow rate of arteries of knee joints measured before and after Uyghur sand therapy. It has been found that Uyghur sand therapy will increase the inner diameter of knee arteries and speed up the blood flow.