Biomechanical stability of four fixation constructs for distal radius fractures

John T. Capo, Tosca Kinchelow, Kenneth Brooks, Virak Tan, Michaele Manigrasso, Kristin Francisco

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Implants available for distal radius fracture fixation include dorsal nonlocked plating (DNLP), volar locked plating (VLP), radial-ulnar dual-column locked plating (DCPs), and locked intramedullary fixation (IMN). This study examines the biomechanical properties of these four different fixation constructs. In 28 fresh-frozen radii, a wedge osteotomy was performed, creating an unstable fracture model and the four fixation constructs employed (DNLP, VLP, DCPs, and IMN). Dorsal bending loads were applied and bending stiffness, load to yield 5 mm displacement, and ultimate failure were measured. Bending stiffness for VLP (16.7 N/mm) was significantly higher than for DNLP (6.8 N/mm), while IMN (12.6 N/mm) and DCPs (11.8 N/mm) were similar. Ultimate load to failure occurred at 278.2 N for the VLP, 245.7 N for the IMN, and 52.0 N for the DNLP. The VLP was significantly stronger than the DNLP and DCPs, and the IMN and DCPs were stronger than the DNLP. The VLP has higher average bending stiffness, ultimate bending strength, and resistance to 5 mm displacement than the other constructs and significantly higher ultimate bending strength than the DCPs and DNLP. There was no statistically significant difference between the VLP and IMN. VLP and IMN fixation of distal radius fractures can achieve comparable stability.

Original languageEnglish (US)
Pages (from-to)272-278
Number of pages7
JournalHand
Volume4
Issue number3
DOIs
StatePublished - 2009
Externally publishedYes

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Radius Fractures
Fracture Fixation
Osteotomy

Keywords

  • Biomechanical
  • Distal radius
  • Distal radius fracture fixation
  • Dorsal plate
  • Dual plates
  • Fixation
  • Fracture
  • Intramedullary
  • Locked plate
  • Nail
  • Wrist
  • Wrist fracture fixation
  • Wrist trauma

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

Cite this

Capo, J. T., Kinchelow, T., Brooks, K., Tan, V., Manigrasso, M., & Francisco, K. (2009). Biomechanical stability of four fixation constructs for distal radius fractures. Hand, 4(3), 272-278. https://doi.org/10.1007/s11552-008-9156-5

Biomechanical stability of four fixation constructs for distal radius fractures. / Capo, John T.; Kinchelow, Tosca; Brooks, Kenneth; Tan, Virak; Manigrasso, Michaele; Francisco, Kristin.

In: Hand, Vol. 4, No. 3, 2009, p. 272-278.

Research output: Contribution to journalArticle

Capo, JT, Kinchelow, T, Brooks, K, Tan, V, Manigrasso, M & Francisco, K 2009, 'Biomechanical stability of four fixation constructs for distal radius fractures', Hand, vol. 4, no. 3, pp. 272-278. https://doi.org/10.1007/s11552-008-9156-5
Capo JT, Kinchelow T, Brooks K, Tan V, Manigrasso M, Francisco K. Biomechanical stability of four fixation constructs for distal radius fractures. Hand. 2009;4(3):272-278. https://doi.org/10.1007/s11552-008-9156-5
Capo, John T. ; Kinchelow, Tosca ; Brooks, Kenneth ; Tan, Virak ; Manigrasso, Michaele ; Francisco, Kristin. / Biomechanical stability of four fixation constructs for distal radius fractures. In: Hand. 2009 ; Vol. 4, No. 3. pp. 272-278.
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