Biomechanical study on a net-fixation of Kirschner wire in treating depressed tibial plateau fractures.
- Author:
Zhao-Xiang CHEN
;
Wei ZHANG
;
Hong-Hui HE
;
Ming-Jiang LIU
;
De-Hui ZENG
- Publication Type:Journal Article
- MeSH: Biomechanical Phenomena; Bone Screws; Fracture Fixation, Internal; instrumentation; Mechanical Phenomena; Tibial Fractures; surgery
- From: China Journal of Orthopaedics and Traumatology 2014;27(5):418-421
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the biomechanical properties of tibial plateau depressed fracture fixed with a net-fixation of Kirschner wires.
METHODSTwenty 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.
RESULTSIn 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).
CONCLUSIONTreatment of tibial plateau depressed fracture with a net-fixation of Kirschner wires is a biological fixation and is a reliably method.