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The Correlation Between Facet Joint Parameters and the Location of Lumbar Disc Herniation in the Young Population


 Background: Facet joint parameters have been discussed as substantial factors in the development of LDH. However, the correlation between facet joint parameters and the location of LDH in the corresponding segment is still unclear. The objective of this study was to demonstrate a clearly relationship between facet orientation (FO), facet tropism (FT) and lumbar disc herniation (LDH) in young individuals.Methods: Between June 2017 and December 2019, 529 patients having single-level LDH (L4-5 or L5-S1) between 18 and 35 years old with a less than 2 years clinical history were included. Another 122 age-matched patients with no LDH were enrolled as the control group (N-LDH group). Based on the location of herniation, cases in LDH group were divided into three groups (LDHL, LDHR, and LDHM). We investigated the correlation between facet joint parameters and the location of LDH.Results: The FOA in L4-5 and L5-S1 level were significantly lower while FT were higher in LDH group than N-LDH group respectively. In terms of the correlation between the facet joint parameters and the location of LDH, the level of LDH, the FOL, FOR, and FT were significantly varied among the three groups. There is a significant association between the different location of LDH and different FO of bilateral facet joints in L4-5 while not in L5-S1 level.Conclusion: The facet joint parameters abnormality have an significant association with the development of LDH. Young individuals with higher FT and/or lower FO should be paid more attention to preventing the occurrence of LDH. There was more location of IVD herniated on the ipsilateral location with lower FO of facet joint when FT existed in L4-5 level.