Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (4): 652-655.doi: 10.3969/j.issn.1673-8225.2012.04.019

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Effect of lag screw auxiliary interlocking intramedullary nail for complicated fracture of femoral shaft on callus content 

Wang Sheng-qiang, He Xing-chuan, Hu Qian-yue, Wang Pan   

  1. First Department of Orthopedics, Hospital of Zunyi Medical College, Zunyi  563003, Guizhou Province, China
  • Received:2011-09-05 Revised:2011-12-13 Online:2012-01-22 Published:2014-04-04
  • Contact: He Xing-chuan, Chief physician, Master’s supervisor, First Department of Orthopedics, Hospital of Zunyi Medical College, Zunyi 563003, Guizhou Province, China hexingchuan888@yahoo.com
  • About author:Wang Sheng-qiang★, Studying for master’s degree, Attending physician, First Department of Orthopedics, Hospital of Zunyi Medical College, Zunyi 563003, Guizhou Province, China 1146698819@qq.com
  • Supported by:

    the Nomarch Foundation of Guizhou Province for Excellent Scholars of Technology and Education, No. 209.001.092.06*

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Abstract:

BACKGROUND: Biomechanical studies and clinical cases observation discovers that using interlocking intramedullary nail for the treatment of complicated fracture of femoral shaft and using lag screw assisted fixation of comminuted fracture piece, can optimize fracture conductivity and promote fracture healing.
OBJECTIVE: To explore the effect of lag screws fixation for comminuted fractures of block fixation on the significance of fracture healing during interlocking intramedullary nail fixation for the treatment of complicated fracture of femoral shaft in operation.
METHODS: Totally 60 cases with interlocking intramedullary nail internal fixation for the treatment of femoral shaft were divided into pulling nail group and exclusion group. Digital X-ray posteroanterior films at 1 and 12 weeks after internal fixation in each group were randomly selected. Gray-scale density of callus area, normal bone area and normal soft tissue area was detected. Comparative analysis of callus area self control gray rate in intragroup and intergroup.
RESULTS AND CONCLUSION: There was no significant difference of the gray-scale density in the normal bone area and normal soft tissue area (P < 0.01), but gray-scale density at 12 weeks after internal fixation was higher than that at 1 week after internal fixation in callus area (P < 0.01). At 12 weeks after internal fixation, gray-scale density of the pulling nail group was obviously higher than that of the exclusion group (P < 0.01). Self control gray rate of the pulling nail group was obviously higher than that of the exclusion group (P < 0.01). The lag screw fixation for comminuted fractures after auxiliary block can contribute to the formation of callus, and bone callus content in the pulling nail group is higher than that in the exclusion group.

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