High union rates and function scores at midterm followup with ankle arthrodesis using a four screw technique.
Clin Orthop Relat Res
The effect of screw thread length on initial stability of Schatzker type 1 tibial plateau fracture fixation: a biomechanical study.
J Orthop Surg Res
SchildhauerTA, LedouxWR & ChapmanJR et al.:
Triangular osteosynthesis and iliosacral screw fixation for unstable sacral fractures: a cadaveric and biomechanical evaluation under cyclic loads.
J Orthop Trauma17:
EarlySDHedmanTPReynoldsRA:Biomechanical analysis of compression screw fixation versus standard in situ pinning in slipped capital femoral epiphysis.
J Pediatr Orthop
Biomechanical comparison of fully and partially threaded screws for fixation of slipped capital femoral epiphysis.
J Pediatr Orthop
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J Hand Surg Eur Vol
Biomechanical evaluation of a second generation headless compression screw for ankle arthrodesis in a cadaver model.
Foot Ankle Surg
PollardJD, DeyhimA & RigbyRB et al.:
Comparison of pullout strength between 3.5-mm fully threaded, bicortical screws and 4.0-mm partially threaded, cancellous screws in the fixation of medial malleolar fractures.
J Foot Ankle Surg49:
The literature is scanty regarding the biomechanical effects of different thread configurations on the initial stability of ankle arthrodesis. This study aims to compare the initial stability of tibiotalar fusion site in ankle arthrodesis using cannulated screws with different thread designs.
We biomechanically tested under cyclic loading the effects of different screw combinations on the initial stability of ankle arthrodesis. A total of 28 synthetic ankle models were divided into four groups: two partially threaded cancellous screws (group A), partially and fully threaded cancellous screws (group B), a partially threaded cancellous screw with a headless compression screw (group C), and a fully threaded cancellous screw and a headless compression screw (group D). Biomechanical variables including ultimate failure load, initial stiffness, ultimate stiffness, and failure angulation were analyzed.
There were no differences in any of the biomechanical variables among the four groups (P = .41 for ultimate failure load, P = .079 for initial stiffness, P = .084 for ultimate stiffness, and P = .937 for failure angulation).
Combinations of different cannulated screws showed similar results in terms of the stability and stiffness of the tibiotalar fusion site.
Acibadem Hospital, Maslak, Istanbul, Turkey.
Istanbul University, İstanbul School of Medicine, Department of Orthopedics and Traumatology, Çapa, İstanbul, Turkey.
Bakirkoy Training and Research Hospital, Department of Orthopedics and Traumatology, Bakırköy, İstanbul, Turkey.
Istanbul Technical University, Department of Mechanical Engineering, Maslak, Istanbul, Turkey.
Corresponding author: Önder Kılıçoğlu, MD, PhD, Istanbul University, İstanbul School of Medicine, Çapa, Istanbul 34100, Turkey. (E-mail: firstname.lastname@example.org)