Machao Guo1, Chao Kong1, Siyuan Sun1, Xiangyao Sun1, Xiangyu Li1, Shibao Lu2. 1. Department of Orthopedics, Capital Medical University, Xuanwu Hospital, Beijing, China. 2. Department of Orthopedics, Capital Medical University, Xuanwu Hospital, Beijing, China. Electronic address: 13167513099@163.com.
Abstract
OBJECTIVE: To evaluate the relationship between degenerative lumbar spondylolisthesis (DLS) and the L4 inclination angle (IA) and evaluate the risk factors of DLS. METHODS: Ninety patients with L4-L5 DLS and 90 with L4-L5 lumbar disc herniation or spinal stenosis (control group) were compared. Parameters including L4 IA, facet joint angle (FJA), cross-sectional area of paraspinal muscle, Pfirrmann grading of intervertebral disc, and degeneration grading of facet joint (FJ) were evaluated. The Student t tests and logistic regression analysis were used to analyze the risk factors of DLS. RESULTS: Statistical differences were found in L4 IA, cross-sectional area of multifidus muscle, FJA, and degeneration grading of FJ between 2 groups (P < 0.001, P = 0.07, P < 0.001, and P < 0.001, respectively). The logistic regression analysis demonstrated that greater L4 IA (β: -0.186, P < 0.001), more sagittal FJ (β: -0.117, P < 0.001), and more severe degeneration of FJ (β: -1.033, P < 0.001) were both significant predictors of DLS. CONCLUSIONS: Patients with L4 IA greater than 11.15° and FJA greater than 60.19° are more likely to occur DLS.
OBJECTIVE: To evaluate the relationship between degenerative lumbar spondylolisthesis (DLS) and the L4 inclination angle (IA) and evaluate the risk factors of DLS. METHODS: Ninety patients with L4-L5 DLS and 90 with L4-L5 lumbar disc herniation or spinal stenosis (control group) were compared. Parameters including L4 IA, facet joint angle (FJA), cross-sectional area of paraspinal muscle, Pfirrmann grading of intervertebral disc, and degeneration grading of facet joint (FJ) were evaluated. The Student t tests and logistic regression analysis were used to analyze the risk factors of DLS. RESULTS: Statistical differences were found in L4 IA, cross-sectional area of multifidus muscle, FJA, and degeneration grading of FJ between 2 groups (P < 0.001, P = 0.07, P < 0.001, and P < 0.001, respectively). The logistic regression analysis demonstrated that greater L4 IA (β: -0.186, P < 0.001), more sagittal FJ (β: -0.117, P < 0.001), and more severe degeneration of FJ (β: -1.033, P < 0.001) were both significant predictors of DLS. CONCLUSIONS:Patients with L4 IA greater than 11.15° and FJA greater than 60.19° are more likely to occur DLS.