Biomechanical stability of a volar locking-screw plate versus fragment-specific fixation in a distal radius fracture model.

  • Cooper E
  • Segalman K
  • Parks B
 et al. 
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Eight matched pairs of cadaveric radii were osteotomized by removing a 4-mm dorsal wedge of bone at the level of the sigmoid notch designed to simulate dorsal comminution. They were then fixed with either a volar locking-screw plate or fragment-specific fixation. All constructs underwent biomechanical testing in a custom-designed, custom-fabricated 4-point bending device. No statistically significant difference in stiffness was noted between the groups. Linear displacement and angulation at the osteotomy site were significantly less in the group with fragment-specific fixation at loads expected to be encountered during postoperative rehabilitation. Angulation at the osteotomy site was significantly less in the locking-screw plate group at higher loads.

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  • Ellis O Cooper

  • Keith a Segalman

  • Brent G Parks

  • Krishna M Sharma

  • Augustine Nguyen

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