Fatigue Properties of Superelastic Ti-Ni Filaments Used in Braided Cables for Bone Fixation

Baril, Yannick; Braïlovski, Vladimir; Terriault, Patrick

doi:10.4028/3-908158-14-1.235

Cited by 4 publications

(6 citation statements)

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“…We chose to use NiTi for its excellent wet performance. The alloy is mounted in pure traction [32] to avoid compressive or bending parts. For instance, other complex paths [33][34][35], such as axial torsion and/or bending used in orthodontic bits for drilling were suppressed because they apparently show shorter life.…”

Section: Fatigue Behaviormentioning

confidence: 99%

Built in dampers for stayed cables in bridges via SMA. The SMARTeR-ESF project: A mesoscopic and macroscopic experimental analysis with numerical simulations

Torra

Auguet

Isalgué

et al. 2013

Engineering Structures

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Shape Memory Alloys (SMAs) are good candidates for solid-state dampers appropriate for the oscillations of bridge stay cables because of their large recoverable strain, hysteresis and reasonable fatigue-life. This work experimentally analyzes the relevant properties of NiTi SMA and conducts facility measurements, frequency analyzes and simulations of the effects of SMA on stay cables. Appropriate phenomenological SMA models were developed and included in a Finite Element (FE) simulation environment. A complete damping solution for bridge stay cables was developed from these experimental analyzes. This paper detail the required properties for a NiTi SMA and analyzes their performance. For instance, the fatiguelife and several of the thermo-mechanical effects influencing the application of NiTi SMAs are outlined. The damping effect of the SMA was studied in two facilities. The first series of measurements was performed using cable 1 of the ELSA facility (JRC-EU, Ispra, Italy). The second was completed in two campaigns at IFSTTAR (Bouguenais, near Nantes in France). The numeric analyzes and simulated results were completely coherent with these experiments: the SMA dampers also drastically reduce the maximum oscillation amplitude induced by the simulated action. The frequency evolution of the damped cable was studied using direct calculations on the signals, the windowed Fourier transform and Morlet wavelets.

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Section: Fatigue Behaviormentioning

confidence: 99%

Built in dampers for stayed cables in bridges via SMA. The SMARTeR-ESF project: A mesoscopic and macroscopic experimental analysis with numerical simulations

Torra

Auguet

Isalgué

et al. 2013

Engineering Structures

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“…Even though nitinol is known for its extensive resistance to repeat loading, the fatigue life of nitinol prostheses should be characterized prior to clinical use. The fatigue properties of an almost identical nitinol prosthesis design for sternal bone fixation produced with smaller nitinol filaments were previously investigated 23,24 . Although fatigue resistance was favorable, the use of large ligaments could impact the fatigue life of the prosthesis used in this study.…”

Section: Discussionmentioning

confidence: 99%

“…The biomechanical characterization of bovine native CCL showed an ultimate tensile load of 4372 ± 1485 N and maximal elongation below 13.5% in tension 19 . These results were used to design an innovative nitinol prosthetic CCL surrogate with similar biomechanical characteristics by means of a special braiding process shown to be effective in producing cables for bone fixation 23,24 . The final nitinol prosthesis used in this study contained 24 nitinol strands with a 0.39 mm diameter and at a braid angle of 40°, which resulted in the braided hollow tubular cable with an effective diameter of 4 mm braided used in this study (Figure 1).…”

Section: Introductionmentioning

confidence: 94%

Biomechanical evaluation of bovine stifles stabilized with an innovative braided superelastic nitinol prosthesis after transection of the cranial cruciate ligament

et al. 2021

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ObjectiveTo determine the stability bovine stifles stabilized with nylon or nitinol superelastic prostheses after transection of the cranial cruciate ligament (CCL).Study designEx vivo study.Sample populationStifles (n = 15) harvested from adult bovine cadavers.MethodsThe stifles were randomly assigned pairwise to a ligament reconstruction technique (n = 5): (1) and (2) Hamilton's technique using a prosthesis made of 24 nitinol strands (0.39 mm) braided at 40°or single 600‐lb test nylon implant, and (3) nitinol prosthesis placed in femoral and tibial bone tunnels (bone‐to‐bone). Craniocaudal tibial translation at ±2000 N was applied to the tibia, and mediolateral angular displacement via measured under torsional tibial loading at ±60 Nm on three occasions: intact CCL, transected, and stabilized. Outcomes were evaluated with a mixed effect linear model for repeated measures.ResultsBone‐to‐bone using nitinol was the only repair that decreased tibial translation after CCL transection (p = .001) with a 23% change magnitude compared with intact CCL. Hamilton was the only stabilization reestablishing angular displacement, similar to intact CCL (p = .109 and .134 for nitinol and nylon). Bone‐to‐bone nitinol stabilization decreased angular displacement after CCL‐transection with an 8% change magnitude (p = .040) without returning to normal values.ConclusionCCL replacement with nylon did restore joint stability. Nitinol prostheses passed through single femoral and tibial bone tunnels (bone‐to‐bone) were the only techniques reducing tibial translation.Clinical significance/impactBone‐to‐bone stabilization with a nitinol prosthesis may be considered as an alternative to nylon for CCL replacement in cattle. These results provide evidence to justify clinical evaluation in cattle undergoing CCL replacement.

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“…The braided structures are widely used for a range of applications, such as ropes, sutures, scaffolds, stents, ligaments, composites, etc. 21,[43][44][45][46][47] The list of applications of braided structures is ever-increasing and the tensile property is of paramount importance for the success of any application of the braided structure. Hence, it is imperative to understand and analyze the tensile characteristics of these structures.…”

Section: Tensile Behavior Of Braided Structuresmentioning

confidence: 99%

Tensile response of braided structures: a review

Rawal

Saraswat

Sibal

2015

Textile Research Journal

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Braiding is a highly versatile and cost-effective method of producing structures that has been successfully used for numerous applications ranging from ropes, composites, biomedical uses, insulation to sports and recreation activities, and the list of applications of braided structures is ever-increasing. The prediction of tensile property is a pre-requisite for the success of deployment of braided structures in these applications. This paper reviews the key parameters that control the tensile properties of biaxial and triaxial braided structures along with the models developed for these braids by various researchers with different fields of interest. In general, the tensile properties of braided structures are strongly dependent upon their architecture and the kinematics and mechanics involved in the braid formation. Furthermore, various approaches and methodologies have also been presented for the tensile models of braids consisting of an elastic core and multi-layered structures.

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Fatigue Properties of Superelastic Ti-Ni Filaments Used in Braided Cables for Bone Fixation

Cited by 4 publications

References 0 publications

Built in dampers for stayed cables in bridges via SMA. The SMARTeR-ESF project: A mesoscopic and macroscopic experimental analysis with numerical simulations

Built in dampers for stayed cables in bridges via SMA. The SMARTeR-ESF project: A mesoscopic and macroscopic experimental analysis with numerical simulations

Biomechanical evaluation of bovine stifles stabilized with an innovative braided superelastic nitinol prosthesis after transection of the cranial cruciate ligament

Tensile response of braided structures: a review

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