Pullout strength evaluation of titanium pedicle screw in different grades of polyurethane

Damisih, Damisih; Hanafi, Razie; Gumelar, Muhammad Dikdik; Sah, Joni; Rahmania, Adita Wardani; Gustiono, Dwi; Nurlina, Nurlina; Arrifqi, Muhammad Hirzan; Setyadi, I.; Triwibowo, B.; Kozin, Muhammad; Jujur, I Nyoman

doi:10.1063/5.0133309

Cited by 1 publication

(2 citation statements)

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“…A suture anchor is responsible for the fixed function of the implant which should facilitate optimal integration into the surrounding tissues [36]. Figure 9 shows the simplified force analysis of the anchor during the pull-out process.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, the wide-tooth anchor with a smaller and more uniform stress distribution has advantages in maintaining mechanical integrity to avoid the early failure of the device during the healing period. A suture anchor is responsible for the fixed function of the implant which should facilitate optimal integration into the surrounding tissues [36]. Figure 9 shows the simplified force analysis of the anchor during the pull-out process.…”

Section: Discussionmentioning

confidence: 99%

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Mechanical Properties and In Vitro Corrosion Behaviors of Biodegradable Magnesium Alloy Suture Anchors

Mao,

Dai,

Cai

et al. 2024

Metals

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Biodegradable suture anchors based on Mg-Nd-Zn-Zr alloy were developed for ligament-to-bone fixation in rotator cuff surgeries. The Mg alloy anchors were designed with structural features of narrow tooth and wide tooth, and simulated through finite element analysis (FEA). Meanwhile, the corrosion behaviors of the Mg alloy anchors were studied by immersion test and the mechanical properties were investigated by measuring the maximum torque and pull-out force. The simulation result showed that the wide-tooth anchor exhibited more a uniform stress distribution and lower shear stress in the torsion process, suggesting a satisfactory torsional resistance of this structure. Meanwhile, the wide-tooth anchor exhibited a lower Von-Mises stress after applying the same pull-out force in the simulation, indicating a higher resistance to pull-out failure of the anchor. The result of the immersion test indicated that the wide-tooth anchor exhibited a slightly slower corrosion rate in Hank’s solution after 14-day immersion, which was beneficial to enhance the structural and mechanical stability of the biodegradable suture anchor. Furthermore, the results of the mechanical properties test demonstrated that the wide-tooth anchor showed superior performance with higher maximum torques and axial pull-out forces before and after corrosion. More importantly, the axial pull-out force and maximum torque for the wide-tooth anchor decreased by 5.86% and 8.64% after corrosion, which were significantly less than those for the narrow-tooth anchor. Therefore, the wide-tooth suture anchor with lower corrosion rate, higher mechanical properties and structural stability is a promising candidate for ligament-bone fixation in the repair of rotator cuff injuries.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%