Cutting Flute and Thread Design on Self-Tapping Pedicle Screws Influence the Insertion Torque and Pullout Strength
Abstract
:1. Introduction
2. Materials and Methods
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Screw Group | Lead of Thread | Number of Cutting Flutes | Length of Flutes (mm) |
---|---|---|---|
A | single-lead | 2 | 2.9 |
B | 3 | ||
C | 2 | 9.5 | |
D | 3 | ||
E | double-lead | 2 | 2.9 |
F | 3 | ||
G | 2 | 9.5 | |
H | 3 |
Group | Average Insertion Torque (Nm) during Initial Screw Revolutions | Average Max. Insertion Torque (Nm) | STD | Average Pullout Strength (N) | STD | |||
---|---|---|---|---|---|---|---|---|
1st Rev. | 2nd Rev. | 3rd Rev. | 4th Rev. | |||||
A | 0.100 | 0.294 | 0.586 | 0.902 | 2.365 | 0.093 | 1766 | 15.8 |
B | 0.110 | 0.323 | 0.610 | 0.923 | 2.415 | 0.103 | 1809 | 20.7 |
C | 0.100 | 0.294 | 0.561 | 0.833 | 2.2 | 0.034 | 1919 | 33.2 |
D | 0.103 | 0.317 | 0.589 | 0.858 | 2.17 | 0.042 | 1967 | 34.0 |
E | 0.299 | 0.928 | 1.605 | 2.143 | 2.974 | 0.115 | 1606 | 14.3 |
F | 0.300 | 0.895 | 1.566 | 2.101 | 2.929 | 0.037 | 1645 | 18.8 |
G | 0.259 | 0.847 | 1.415 | 1.906 | 2.568 | 0.091 | 1747 | 30.4 |
H | 0.282 | 0.849 | 1.360 | 1.790 | 2.36 | 0.028 | 1791 | 35.5 |
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Wu, L.-C.; Hsieh, Y.-Y.; Tsuang, F.-Y.; Kuo, Y.-J.; Chiang, C.-J. Cutting Flute and Thread Design on Self-Tapping Pedicle Screws Influence the Insertion Torque and Pullout Strength. Appl. Sci. 2022, 12, 1956. https://doi.org/10.3390/app12041956
Wu L-C, Hsieh Y-Y, Tsuang F-Y, Kuo Y-J, Chiang C-J. Cutting Flute and Thread Design on Self-Tapping Pedicle Screws Influence the Insertion Torque and Pullout Strength. Applied Sciences. 2022; 12(4):1956. https://doi.org/10.3390/app12041956
Chicago/Turabian StyleWu, Lien-Chen, Yueh-Ying Hsieh, Fon-Yih Tsuang, Yi-Jie Kuo, and Chang-Jung Chiang. 2022. "Cutting Flute and Thread Design on Self-Tapping Pedicle Screws Influence the Insertion Torque and Pullout Strength" Applied Sciences 12, no. 4: 1956. https://doi.org/10.3390/app12041956
APA StyleWu, L. -C., Hsieh, Y. -Y., Tsuang, F. -Y., Kuo, Y. -J., & Chiang, C. -J. (2022). Cutting Flute and Thread Design on Self-Tapping Pedicle Screws Influence the Insertion Torque and Pullout Strength. Applied Sciences, 12(4), 1956. https://doi.org/10.3390/app12041956