Experimental tests on new titanium alloy interbody cervical cages

Rosa, Guido La; Clienti, C.; Mineo, Rosalia

doi:10.1016/j.prostr.2018.12.062

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…This data could be used to assess the cage in the body environment. 44 The testing device was Zwick Roell (Zwick/ Roell, Servohydrolic, HCR 25-400, ZwickRoell GmbH & Co. KG) with a load cell of 20 kN. The test blocks were made of stainless steel.…”

Section: Experimental Set-upmentioning

confidence: 99%

Optimization of cervical cage and analysis of its base material: A finite element study

Jalilvand

Abolfathi

Khajehzadeh

et al. 2022

Proc Inst Mech Eng H

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Nowadays, cervical disorders are common due to human lifestyles. Accordingly, the cage design should be optimized as an essential issue. For an optimal design, an objective function is utilized to calculate the proper geometrical parameters. Additionally, the base material of the cage plays a key role in its functionality and final cost. Novel materials are currently introduced with more compatibility with the bone in terms of mechanical and chemical properties. In this study, a cervical cage was modeled based on PEEK material with three types of tooth designs on its surface. The cervical cage is assumed to be implanted between C6 and C7 vertebrae. The geometric parameters of the cage were optimized to minimize the mass by determining allowable stress and subsidence. The effect of complete cortical removal was investigated as a surgical mistake. Finally, a new composition of PEEK/titanium was introduced as the base material of the cage. Ansys 18.2 was used for FEA. The cage with a straight tooth was chosen due to its lower stress and subsidence compared with other designs. Furthermore, the optimized structures of all three tooth designs were determined. The mass and volume of the optimal cages were reduced by 41.47% and 41.52% respectively. Besides, complete cortical resection should not be carried out during fusion surgery, since it may lead to higher subsidence. The composition of PEEK/titanium was chosen as an appropriate base material due to its better performance compared with PEEK or titanium alone.

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Section: Experimental Set-upmentioning

confidence: 99%

Optimization of cervical cage and analysis of its base material: A finite element study

Jalilvand

Abolfathi

Khajehzadeh

et al. 2022

Proc Inst Mech Eng H

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“…With this technology, we can create cages with controlled porosity with a solid part that is characterized by high purity and rough surface enhancing osteointegration. 153 A biomechanical experimental study demonstrated 3 different cages (standard PEEK cage and two innovative Ti alloys made by electron beam melting (EBM) technology by MT Ortho) subjected to static compression test with encouraging results. It showed that mechanical and functional failure of the innovative cages occurred due to the load value greater than the physiological one of the cervical spine.…”

Section: Egyptian Spinementioning

confidence: 99%

“…It showed that mechanical and functional failure of the innovative cages occurred due to the load value greater than the physiological one of the cervical spine. 153 A different array of standalone cages was evaluated as follows: 45 a composite Ti/PEEK integral fixation cages which offered efficacy in ACDF procedures, 145 another standalone system; Zero-P cervical cage with a zero-profile plate and Ti cages with promising clinical results; 159 the ROI-C cage (LDR Medical, France), one of the devices developed to increase immediate spinal stability and avoid anterior plating and iliac crest bone grafting; 74 zero-profile cages made of PEEK with VerteBRIDGE TM double anchoring system and self-locking plate (Figures 4 and 5). Novel osteoinductive ceramic implants have antiinfective properties, higher fracture resistance, and semiradiolucent with promising results in spine fusion surgeries.…”

Section: Egyptian Spinementioning

confidence: 99%

Cervical Intervertebral Cages: Past, Present, Innovations, and Future Trends with Review of the Literature.

Elkazaz

Koptan²,

Al-Shatoury

et al. 2020

Egyptian Spine Journal

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“…Leading efforts to reduce the above problems concentrate on the employment of functional materials, such as superelastic alloys [ 8 ], and the development of porous [ 9 , 10 ] and patient-specific [ 11 , 12 ] spinal devices. Superelastic alloys have a lower modulus of elasticity than the traditionally used metallic implant materials.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and fluid permeability of gyroid and diamond lattice structures for intervertebral devices: functional requirements and comparative analysis

Timercan

Sheremetyev

Braïlovski

2021

Science and Technology of Advanced Materials

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Current intervertebral fusion devices present multiple complication risks such as a lack of fixation, device migration and subsidence. An emerging solution to these problems is the use of additively manufactured lattice structures that are mechanically compliant and permeable to fluids, thus promoting osseointegration and reducing complication risks. Strut-based diamond and sheet-based gyroid lattice configurations having a pore diameter of 750 µm and levels of porosity of 60, 70 and 80% are designed and manufactured from Ti-6Al-4V alloy using laser powder bed fusion. The resulting structures are CT–scanned, compression tested and subjected to fluid permeability evaluation. The stiffness of both structures (1.9–4.8 GPa) is comparable to that of bone, while their mechanical resistance (52–160 MPa) is greater than that of vertebrae (3–6 MPa), thus decreasing the risks of wither bone or implant failure. The fluid permeability (5–57 × 10 −9 m 2 ) and surface-to-volume ratios (~3) of both lattice structures are close to those of vertebrae. This study shows that both types of lattice structures can be produced to suit the application specifications within certain limits imposed by physical and equipment-related constraints, providing potential solutions for reducing the complication rate of spinal devices by offering a better fixation through osseointegration.

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Experimental tests on new titanium alloy interbody cervical cages

Cited by 5 publications

References 10 publications

Optimization of cervical cage and analysis of its base material: A finite element study

Optimization of cervical cage and analysis of its base material: A finite element study

Cervical Intervertebral Cages: Past, Present, Innovations, and Future Trends with Review of the Literature.

Mechanical properties and fluid permeability of gyroid and diamond lattice structures for intervertebral devices: functional requirements and comparative analysis

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