Comparison of insertion time, pull-out strength, and screw-media interface area of customized pedicle screw with different core and thread design against commercial pedicle screw: a pilot study on Indonesian Population

• Main Authors: Magetsari, Rahadyan, Rukmoyo, Tedjo, Saputra, Marda Ade, Sakti, Yudha Mathan
• Format: Article PeerReviewed
• Language: English
• Published: BioMed Central Ltd 2022
• Subjects: Orthopaedics
• Online Access: https://repository.ugm.ac.id/283643/1/Comparison%20of%20insertion%20time%2C%20pull-out%20strength%2C%20and%20screw-media%20interface%20area%20of%20customized%20pedicle%20screw%20with%20different%20core%20and%20thread%20design%20against%20commercial%20pedicle%20screw%20a%20pilot%20study%20on%20Indonesian%20Population.pdf; https://repository.ugm.ac.id/283643/; https://bmcresnotes.biomedcentral.com/articles/10.1186/s13104-021-05803-5; https://doi.org/10.1186/s13104-021-05803-5
• Institution: Universitas Gadjah Mada

Objective: This research aimed to developing customized pedicle screw based on Indonesian vertebral anatomy and compare the insertion time, pull-out strength, and screw-media interface area of different screw design. We have developed 3 different types of pedicle screws (v-thread cylinder-core, square-thread cylinder-core and square-thread conical-core). The thread diameter was calculated from pedicle width of Indonesian population (6 mm). We used commercially available pedicle screw as control group (6.2 mm). Result: The insertion time were significantly difference between v-thread cylinder-core pedicle screw (22.94 s) with commercially available pedicle screw (15.86 s) (p < 0.05). The pull-out strength was significantly difference between commercially available pedicle screw (408.60 N) with square-thread conical pedicle screw (836.60 N) (p < 0.05). The square-thread conical-core group have the highest interface area (1486.21 mm2). The data comparison showed that the square-thread conical-core customized pedicle screw group has comparable insertion time and has better pull-out strength than commercially available pedicle screw.