title: [Biomechanical study on a net-fixation of Kirschner wire in treating depressed tibial plateau fractures].
abstract: OBJECTIVE
  To evaluate the biomechanical properties of tibial plateau depressed fracture fixed with a net-fixation of Kirschner wires.
  
  
  METHODS
  Twenty homemade fracture models were fixed with eight 1.5 mm Kirschner wires in a net-fixation; 20 homemade fracture models were fixed with two 3.5 mm cortical screws. Plane-compressed and dot-compressed test were made on each 10 models of the two groups. The maximal force of anti-ompress and stiffness were measured and evaluated.
  
  
  RESULTS
  In plane-compressed test,mean maximal force of anti-compress and stiffness for screw fixation was (1,925.31 +/- 444.26) N and (2.28 +/- 0.53) N/mm2, respectively, for net-fixation was (1,609.62 +/- 277.72) N and (1.90 +/- 0.33) N/mm2, respectively. There was no statistical difference between the two fixation methods (P > 0.05). In dot-compressed test,mean maximal force of anti-compress and stiffness for screw fixation was (411.13 +/- 233.88) N and (2.66 +/- 1.52) N/mm2,respectively,for net-fixation was (1,105.58 +/- 290.66) N and (7.18 +/- 1.89) N/mm2,respectively,the net-fixation was better than that of the screw fixation (P< 0.01).
  
  
  CONCLUSIONS
  Treatment of tibial plateau depressed fracture with a net-fixation of Kirschner wires is a biological fixation and is a reliably method.
authors.forename: Zhao-Xiang
authors.initials: ZX
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Hong-Hui
authors.initials: HH
authors.lastname: He
authors.forename: Ming-Jiang
authors.initials: MJ
authors.lastname: Liu
authors.forename: De-Hui
authors.initials: DH
authors.lastname: Zeng
mesh_terms: D001696:Biomechanical Phenomena; D001863:Bone Screws; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D055595:Mechanical Phenomena; D013978:Tibial Fractures / Q000601:surgery*