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A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs.

Publication ,  Journal Article
Abar, B; Vail, E; Mathey, E; Park, E; Allen, NB; Adams, SB; Gall, K
Published in: Clin Biomech (Bristol, Avon)
January 2024

BACKGROUND: The purpose of this study is to develop a simple and reproducible bending model that is compatible with a wide range of orthopaedic fixation devices and 3D printed spacers. METHODS: A robust 4-point bending model was constructed by securing sawbones blocks with different orthopaedic fixation device constructs. Stress strain curves derived from a fundamental mechanics model were used to assess the effect of bone density, type of hardware (staple vs intramedullary beam), the use of dynamic compression, orientation of staples (dorsal vs plantar), and the use of 3D printed titanium spacers. FINDINGS: The high throughput 4-point bending model is simple enough that the methods can be easily repeated to assess a wide range of fixation methods, while complex enough to provide clinically relevant information. INTERPRETATIONS: It is recommended that this model is used to assess a large initial set of fixation methods in direct and straightforward comparisons.

Duke Scholars

Published In

Clin Biomech (Bristol, Avon)

DOI

EISSN

1879-1271

Publication Date

January 2024

Volume

111

Start / End Page

106135

Location

England

Related Subject Headings

  • Orthopedics
  • Orthopedics
  • Humans
  • Fracture Fixation, Intramedullary
  • Fracture Fixation, Internal
  • Bone Plates
  • Biomechanical Phenomena
  • 4207 Sports science and exercise
  • 4201 Allied health and rehabilitation science
  • 4003 Biomedical engineering
 

Citation

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Abar, B., Vail, E., Mathey, E., Park, E., Allen, N. B., Adams, S. B., & Gall, K. (2024). A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs. Clin Biomech (Bristol, Avon), 111, 106135. https://doi.org/10.1016/j.clinbiomech.2023.106135
Abar, Bijan, Elijah Vail, Elizabeth Mathey, Ella Park, Nicholas B. Allen, Samuel B. Adams, and Ken Gall. “A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs.Clin Biomech (Bristol, Avon) 111 (January 2024): 106135. https://doi.org/10.1016/j.clinbiomech.2023.106135.
Abar B, Vail E, Mathey E, Park E, Allen NB, Adams SB, et al. A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs. Clin Biomech (Bristol, Avon). 2024 Jan;111:106135.
Abar, Bijan, et al. “A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs.Clin Biomech (Bristol, Avon), vol. 111, Jan. 2024, p. 106135. Pubmed, doi:10.1016/j.clinbiomech.2023.106135.
Abar B, Vail E, Mathey E, Park E, Allen NB, Adams SB, Gall K. A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs. Clin Biomech (Bristol, Avon). 2024 Jan;111:106135.
Journal cover image

Published In

Clin Biomech (Bristol, Avon)

DOI

EISSN

1879-1271

Publication Date

January 2024

Volume

111

Start / End Page

106135

Location

England

Related Subject Headings

  • Orthopedics
  • Orthopedics
  • Humans
  • Fracture Fixation, Intramedullary
  • Fracture Fixation, Internal
  • Bone Plates
  • Biomechanical Phenomena
  • 4207 Sports science and exercise
  • 4201 Allied health and rehabilitation science
  • 4003 Biomedical engineering