Interbody fusion and internal fixation for lumbar spondylolisthesis: Changes of spnio-pelvic parameters

doi:10.3969/j.issn.2095-4344.2013.04.002

Abstract

Abstract:

BACKGROUND: Abnormality of spnio-pelvic parameters is closely related to the occurrence and progress of lumbar spondylolisthesis.
OBJECTIVE: To explore the change and clinical significance of spino-pelvic parameters in lumbar spondylolisthesis patients after internal fixation.
METHODS: A retrospective analysis was conducted on 60 patients with lumbar spondylolisthesis undergoing posterior lumbar interbody fusion and internal fixation. The pre-and post-operative lumbarlordosis, pelvic projectional angle, sacralslope angle, pelvic tilting angle, sagittal balance, slip degree, slip angle and height of intervertebral disc were measured on X-ray film. These parameters were analyzed using t-test between pre- and post-operation. Linear correlations between these parameters were analyzed.
RESULTS AND CONCLUSION: There were significant differences between pre- and post-operative slip degree, slip angle, height of intervertebral disc, lumbar lordosis, pelvic tilting, sacral slope and sagittal balance (P < 0.01). The restoration of height of intervertebral disc showed significant correlation with the change of lumbar lordosis, pelvic tilting, sacral slope, slip degree and slip angle. The change of lumbar lordosis was significantly correlated with the change of slip angle, slip degree, pelvic tilting and sacral slope. It indicates that posterior lumbar interbody fusion and internal fixation can significantly improve the sacral slope, pelvic tilting, lumbar lordosis and sagittal balance of the patients with lumbar spondylolisthesis. Therefore, when treating lumbar spondylolisthesis patients with posterior lumbar interbody fusion and internal fixation, compensatory mode of pelvis with different pelvic projectional angles must be considered, and surgical surgeons should restore the height of intervertebral disc individually.

Key words: bone and joint implants, spinal implants, lumbar spondylolisthesis, internal fixation, spino-pelvic parameters, slip degree, slip angle, height of intervertebral disc, posterior lumbar interbody fusion, lumbar lordosis, pelvic tilting angle, sacral slope angle

CLC Number:

R318

Chen Tao, Jia Shi-qing, Chen Wu, Li Pin-quan. Interbody fusion and internal fixation for lumbar spondylolisthesis: Changes of spnio-pelvic parameters[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(4): 576-581.

Figures/Tables 4

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