|
KMID : 1001920160590030292
|
|
Journal of Korean Neurosurgical Society
2016 Volume.59 No. 3 p.292 ~ p.295
|
|
|
Sagittal Pelvic Radius in Low-Grade Isthmic Lumbar Spondylolisthesis of Chinese Population
|
|
Zhao Yang
Shen Cai Liang
Zhang Ren Jie
Cheng Da Wei
Dong Fu Long
Wang Jun
|
|
|
Abstract
|
|
|
Objective: To investigate the variation of pelvic radius and related parameters in low-grade isthmic lumbar spondylolisthesis.
Methods: Seventy-four patients with isthmic lumbar spondylolisthesis and 47 controls were included in this study. There were 17 males and 57 females between 30 and 66 years of age, including 30 with grade I slippages and 44 grade II slippages; diseased levels included 34 cases on L4 and 40 cases on L5. Thoracic kyphosis (TK), the pelvic radius (PR), the pelvic angle (PA), pelvic morphology (PR-S1), and total lumbopelvic lordosis (PR-T12) were assessed from radiographs.
Results: Statistically significant differences were found for the PA, PR-T12, and PR-S1 (24.5±6.6°, 83.7±9.8°, and 25.4±11.2°, respectively) of the patients with spondylolisthesis and the healthy volunteers (13.7±7.8°, 92.9±9.2°, and 40.7±8.9°, respectively). The TK/PR-T12 ratios were between 0.15 and 0.75. However, there were no differences in all the parameters between the L4 and L5 spondylolysis subgroups (p>0.05). The TK and PR-S1 of grade II were less than grade I, but the PA was greater. The PR-T12 of female patients were less than male patients, but the PA was greater (p<0.05).
Conclusion: Pelvic morphology differed in patients with low-grade isthmic lumbar spondylolisthesis compared to controls. Gender and the grade of slippage impacted the sagittal configuration of the pelvis, but the segment of the vertebral slip did not. Overall, the spine of those with spondylolisthesis remains able to maintain sagittal balance despite abnormal pelvic morphology.
|
|
|
KEYWORD
|
|
|
Isthmic lumbar spondylolisthesis , Pelvic radius , Sagittal balance
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
   
|
|