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The relationship between spinopelvic parameters and clinical symptoms of severe isthmic spondylolisthesis: a
Zhengguang Wang1, Bing Wang, Bangliang Yin
1Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139 Renmin Middle Road, Changsha, 410011, China.
Purpose:
To investigate the relationship between spinopelvic parameters and clinical symptoms for patients with severe isthmic spondylolisthesis.
Methods:
A series of spinopelvic parameters were measured in 64 patients with L5 severe isthmic spondylolisthesis. The patients were divided into two groups according to Oswestry score obtained preoperatively, i.e. mild or severe low back pain group. T test was used to compare parameters between two groups, and multiple linear regression analysis was employed to investigate the association between parameters and Oswestry score.
Results:
Compared with two group patients, parameters of spondylolisthesis grade, pelvic tilt (PT), lumbar lordosis (LL), T9 tilting angle (T9TA), sacro-femoral horizontal distance (SFHD), distance between perpendicular line through C7 and sacrum (SC7D), pelvic tilt/sacral slope (PT/SS), sacro-femoral horizontal distance/vertical distance (SFHD/SFVD), and lumbar lordosis/thoracic kyphosis (LL/TK) were significantly increased in severe low back pain group, while SS and SFVD were significantly decreased, and no significant difference was found for pelvic incidence (PI) and TK. The statistical analysis showed that spondylolisthesis grade, PT, SC7D, LL, SFHD, PT/SS, SFHD/SFVD, and LL/TK had a significant positive correlation with Oswestry score, with an order of spondylolisthesis grade > PT/SS > SC7D > PT > SFHD/SFVD > SFHD > LL/TK > LL. No significant correlation was found for PI, TK, T9TA with Oswestry score, while SS and SFVD had a significant negative correlation with Oswestry score, with an order of SS > SFVD.
Conclusions:
The spinopelvic parameters (spondylolisthesis grade, SS, PT, SC7D, LL, SFVD, SFHD, PT/SS, SFHD/SFVD, LL/TK) are significantly correlated with clinical symptoms of severe isthmic spondylolisthesis in patients. The association of the exacerbation of low back pain with SS (correlation coefficient -0.981, strong) and SFVD (correlation coefficient -0.802, strong) is the most significant correlation.
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