Introduction of Maximum Stress Parameter for the Evaluation of Stress Shielding Around Orthopedic Screws in the Presence of Bone Remodeling Process

Hosseinitabatabaei, Seyedmahdi; Ashjaee, Nima; Tahani, Masoud

doi:10.1007/s40846-017-0267-8

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…The STPs values of all group length show the same trends where the highest STP is at the finer pitch size before STPs values start to decrease as the size of pitch increased except for group length of 6-8 mm. The result shown similar pattern as that of Hosseinitabatabaei et al [34], where simulated 4 years healing process to observe the effect of maximum stress parameter and STP by screw pitch from 1.5 mm to 2.5 mm and the results shows that by decreasing screw pitch size would improve the screw performance and reduce the effects of stress shielding. However, at the group length of 6-8 mm, the STPs values start to increase simultaneously as the size of pitch increased.…”

Section: Resultssupporting

confidence: 82%

Stress Shielding Prediction of Unicortical and Bicortical Screws: A Finite Element Analysis

Djanali¹

2023

JMechE

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The stability in an implant fixation plays a vital role in ensuring proper formation and remodelling process of the fractured bone. Failure in implant fixation is commonly associated with short- and long-term instability of the bone-implant interface. The bone-implant interaction creates a complicated mechanical interplay that might influence the stress distribution and hence the biomechanical performance stability of the implant fixation. Furthermore, implant screw parameters namely thread size, geometrical design and material properties become additional factors that affect the bone-implant interaction. The purpose of this study was to investigate the effect of unicortical and bicortical screws’ parameters on the screw-bone interaction mechanism. To evaluate the stress transfers between screw and bone, the stress parameters namely stress transfer parameters (STP) was employed. A two-dimensional (2D) finite element model of full treaded screw was simulated while varying the parameters of the screw: two types of material (stainless steel A316 and titanium alloy Ti-6Al-4V), screw length and screw pitch. It was found that the lower in elastic modulus results to the higher stress transfer between implant- bone interface. As the titanium have lower elastic modulus, it gave higher values of STP which help to transmit and distribute stress better compared to the stainless steel. While the effect of varying screw pitch between two types of screws shows that STPs values of fully threaded bicortical screws shows significant result for finer pitch size that may advancing bone remodelling process at the early stage.

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Section: Resultssupporting

confidence: 82%

Stress Shielding Prediction of Unicortical and Bicortical Screws: A Finite Element Analysis

Djanali¹

2023

JMechE

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“…The problems with these conventional materials are their least biodegradability, biological inertness, similarity in properties to the bone, long-term stability, wear, and corrosion resistance [8][9][10][11][12][13][14][15][16][17]. The other issues related to these implant materials are stress shielding, secondary infections, metal ion release, etc [18][19][20][21][22][23][24][25]. Therefore, in most cases, multiple revisions are required in case of failure of implants.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in Coatings for Orthopedic Metallic Implants

et al. 2021

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Titanium, stainless steel, and CoCrMo alloys are the most widely used biomaterials for orthopedic applications. The most common causes of orthopedic implant failure after implantation are infections, inflammatory response, least corrosion resistance, mismatch in elastic modulus, stress shielding, and excessive wear. To address the problems associated with implant materials, different modifications related to design, materials, and surface have been developed. Among the different methods, coating is an effective method to improve the performance of implant materials. In this article, a comprehensive review of recent studies has been carried out to summarize the impact of coating materials on metallic implants. The antibacterial characteristics, biodegradability, biocompatibility, corrosion behavior, and mechanical properties for performance evaluation are briefly summarized. Different effective coating techniques, coating materials, and additives have been summarized. The results are useful to produce the coating with optimized properties.

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“…These materials have the potential to replace non-degradable implants by gradually degrading over time, eliminating the need for additional surgical interventions for removal [ [1] , [2] , [3] , [4] , [5] ]. One of the significant issues with conventional implant materials, such as titanium alloys and alumina-zirconia composites, is the modulus mismatch with the surrounding bone [ [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] ]. The large difference in mechanical properties between the implant and the bone can lead to stress shielding, a phenomenon where the implant bears most of the load, resulting in bone resorption and implant loosening [ [15] , [16] , [17] , [18] , [19] , [20] ].…”

Section: Introductionmentioning

confidence: 99%

Advances in biodegradable materials: Degradation mechanisms, mechanical properties, and biocompatibility for orthopedic applications

Hussain,

Khan,

Shafiq

et al. 2024

Heliyon

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Introduction of Maximum Stress Parameter for the Evaluation of Stress Shielding Around Orthopedic Screws in the Presence of Bone Remodeling Process

Cited by 6 publications

References 41 publications

Stress Shielding Prediction of Unicortical and Bicortical Screws: A Finite Element Analysis

Stress Shielding Prediction of Unicortical and Bicortical Screws: A Finite Element Analysis

Recent Developments in Coatings for Orthopedic Metallic Implants

Advances in biodegradable materials: Degradation mechanisms, mechanical properties, and biocompatibility for orthopedic applications

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