Biomechanical design and analysis of auxetic pedicle screw to resist loosening

Yao, Yan; Yuan, Hao; Huang, Huiwen; Liu, Jinglong; Wang, Lizhen; Fan, Yubo

doi:10.1016/j.compbiomed.2021.104386

Cited by 34 publications

(19 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers have designed AM cancellous screws inspired by auxetic lattice structures that provided extra stiffness and strength 133 . A similar kind of work was done for pedicles where the AM enabled auxetic structures helped in bone screw fixation by radial expansion that further helped in developing resistance against the pulling out under the tensile force 134 . Researchers have also evaluated the effect of infill pattern on the mechanical properties of cancellous screws.…”

Section: Orthopedic Implants and Additive Manufacturingmentioning

confidence: 92%

Functionally graded additive manufacturing for orthopedic applications

Rouf

Malik

Raina

et al. 2022

Journal of Orthopaedics

View full text Add to dashboard Cite

Section: Orthopedic Implants and Additive Manufacturingmentioning

confidence: 92%

Functionally graded additive manufacturing for orthopedic applications

Rouf

Malik

Raina

et al. 2022

Journal of Orthopaedics

View full text Add to dashboard Cite

“…As another application linked to spinal surgery, Yan Yao et al proposed an auxetic pedicle screw based on a Ti6Al4V resin cell (DPR New Materials Technology Co., Ltd., Beijing, China) to improve the biomechanical interaction between the surrounding bone and the screw, mainly for the spine. According to the results of the finite element method (FEM), the correspondence between Young's modulus of bone and screw is a necessary condition of pull-out protection for a particular bone [12].…”

Section: Bioprostheses 211 Spinal Surgerymentioning

confidence: 99%

Auxetic Metamaterials for Biomedical Devices: Current Situation, Main Challenges, and Research Trends

et al. 2022

View full text Add to dashboard Cite

Auxetic metamaterials are characterized by a negative Poisson ratio (NPR) and display an unexpected property of lateral expansion when stretched and densification when compressed. Auxetic properties can be achieved by designing special microstructures, hence their classification as metamaterials, and can be manufactured with varied raw materials and methods. Since work in this field began, auxetics have been considered for different biomedical applications, as some biological tissues have auxetic-like behaviour due to their lightweight structure and morphing properties, which makes auxetics ideal for interacting with the human body. This research study is developed with the aim of presenting an updated overview of auxetic metamaterials for biomedical devices. It stands out for providing a comprehensive view of medical applications for auxetics, including a focus on prosthetics, orthotics, ergonomic appliances, performance enhancement devices, in vitro medical devices for interacting with cells, and advanced medicinal clinical products, especially tissue engineering scaffolds with living cells. Innovative design and simulation approaches for the engineering of auxetic-based products are covered, and the relevant manufacturing technologies for prototyping and producing auxetics are analysed, taking into consideration those capable of processing biomaterials and enabling multi-scale and multi-material auxetics. An engineering design rational for auxetics-based medical devices is presented with integrative purposes. Finally, key research, development and expected technological breakthroughs are discussed.

show abstract

“…Santos et al [26] used poly(L-lactide-co-DL-lactide) for the fabrication of bioabsorbable interference screws. Yao et al [27] enhanced the geometry of the titanium pedicle screw by providing auxetic structure using 3D printing technology to resist the loosening of the pedicle screw. Dhandapani et al [28] used 3D printing technology for fabricating porous biodegradable cortical screws using PLA polymer.…”

Section: Introductionmentioning

confidence: 99%

Post‐yielding fracture mechanics of 3D printed polymer‐based orthopedic cortical screws

et al. 2022

View full text Add to dashboard Cite

The internal fixation of a fractured bone is generally achieved with bone screws during most orthopedic surgeries. Biodegradable screws have not received as much attention as they deserve. Biodegradable screws reduce the stress‐shielding effect, screw failure, complex, painful revision surgery for screw extraction. The vital focus of the present research is to fabricate cortical bone screws using polylactic acid (PLA) by fused deposition modeling technology. The PLA cortical screws were manufactured with different infill patterns (triangular, honeycomb, grid, and concentric), keeping other parameters constant using three‐dimensional printing. The mechanical behavior and fracture mechanism of different patterned cortical screws were observed based on compression testing and tensile testing of screws. Scanning electron microscopy (SEM) observed the surface topographical features, fracture behavior, and microstructure characterization of different patterned polymeric cortical screws were observed using SEM. Based on the SEM micrographs, mechanical characterization of compression and tensile testing shows the stress, fractures and fatigue cracks propagation at the bone screw interfaces by fractures copy. Moreover, it was observed that the fracture mechanism of ductile to brittle fracture was observed with variation in the infill pattern of the bone screw. The outcomes revealed that the cortical screw with honeycomb infill pattern has the highest compressive and tensile strength than other infill patterns. Honeycomb structured cortical screws have approximately 17% higher compressive strength and 30% higher tensile strength than the triangular patterned cortical screw due to higher bonding surface area at the intercalated layers.

show abstract

Biomechanical design and analysis of auxetic pedicle screw to resist loosening

Cited by 34 publications

References 33 publications

Functionally graded additive manufacturing for orthopedic applications

Functionally graded additive manufacturing for orthopedic applications

Auxetic Metamaterials for Biomedical Devices: Current Situation, Main Challenges, and Research Trends

Post‐yielding fracture mechanics of 3D printed polymer‐based orthopedic cortical screws

Contact Info

Product

Resources

About