ArticleBMC musculoskeletal disorders2022
Fixation stability comparison of bone screws based on thread design: buttress thread, triangle thread, and square thread.
Article in BMC musculoskeletal disorders, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Orthopedic Biomaterials in the Clinical Reconstruction of Osteoporotic Atlantoaxial Injuries: A Review.Bioengineering (Basel, Switzerland) · 2026Review
- Process Modeling and Micromolding Optimization of HA- and TiOMaterials (Basel, Switzerland) · 2025Article
- Evaluation of screw pull-out from plate fixation of en bloc distal radius resection with ulnar reconstruction: Finite element analysis and comparison with experiments on Thiel cadavers.APL bioengineering · 2025Article
- Biomechanical insights into anterolateral vertebral screw fixation in osteoporotic spines: a comparative study of fixation methods and positions using porcine vertebrae.Journal of orthopaedic surgery and research · 2025Article
- Measurement of anatomical parameters of anterior transpedicular root screw intervertebral fusion system of cervical spine.BMC musculoskeletal disorders · 2023Article
- Biomechanical evaluation of position and bicortical fixation of anterior lateral vertebral screws in a porcine model.Scientific reports · 2023Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
backgroundThe influence of thread profile on the fixation stability of bone screws remains unclear. This study aimed to compare the fixation stability of screws with different thread profiles under several loading conditions.
methodsBone screws that differed in thread profile (buttress, triangle, and square thread) only were made of stainless steel. Their fixation stabilities were evaluated individually by the axial pullout test and lateral migration test, besides, they were also evaluated in pairs together with a dynamic compression plate and a locking plate in polyurethane foam blocks under cyclic craniocaudal and torsional loadings.
resultsThe triangle-threaded and square-threaded screws had the highest pullout forces and lateral migration resistance. When being applied to a dynamic compression plate, higher forces and more cycles were required for both triangle- and square-threaded screws to reach the same displacement under cyclic craniocaudal loading. On the other hand, the triangle-threaded screws required a higher torque and more cycles to reach the same angular displacement under cyclic torsional loading. When being applied to a locking plate, the square-threaded screws needed higher load, torque, and more cycles to reach the same displacement under both cyclic craniocaudal and torsion loadings.
conclusionsThe triangle-threaded screws had superior pullout strength, while square-threaded screws demonstrated the highest lateral migration resistance. Moreover, dynamic compression plate fixation with triangle- and square-threaded screws achieved more favorable fixation stability under craniocaudal loading, while triangle-threaded screws demonstrated superior fixation stability under torsional loading. Locking plate fixation with a square-threaded screw achieved better fixation stability under both loading types.
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