Study of reliability and reproducibility of AO，Denis and TLICS classification systems for thoracolumbar fracture

English Keywords:Thoracolumbar fracture  TLICS  AO classification  Denis classification  Consistency test

English Abstract:

  【Abstract】 Objective：To investigate and compare the reliability and reproducibility of AO，Denis and TLICS classification systems in the diagnosis of thoracolumbar fracture.Method：Thirty-one thoracolumbar fracture patients with complete clinical data and radiologic data（including X-ray films，CT and MRI） were enrolled.Six observers，who were orthopaedic surgeons，determined the classifications according to AO，Denis and TLICS systems　respectively.The classification was repeated three months later.The Cohen Kappa test was used to determine inter-observer reliability and intra-observer reproducibility.Result：The average inter-observer Kappa values for AO，Denis and TLICS Systems were 0.517，0.639 and 0.713 respectively.And the intra-observer agreements were 0.766，0.832 and 0.804 respectively.Conclusion：Among the three classification systems，TLICS system has the greatest reliability and reproducibility，and thus has more value in clinical practice.