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  • Title: [Imaging study of lumbar intervertebral disc herniation and asymptomatic lumbar intervertebral disc herniation].
    Author: Yu QY, Yang CR, Yu LT.
    Journal: Zhongguo Gu Shang; 2009 Apr; 22(4):279-82. PubMed ID: 19408758.
    Abstract:
    OBJECTIVE: Using regional assignment to forked method to study lumbar intervertebral disc hemiation (bugle, hernia, prolapse) dependablity and reason of lumbar intervertebral disc herniation and asymptomatic lumbar intervertebral disc herniation. METHODS: From March 2005 to October 2006, 120 patients of match condition from orthopaedics dept and rehabilitative dept of the Boai hospital of Longyan were studied. All patients were equally divided into two groups according to whether or not accompany with symptom of lumbar intervertebral disc herniation. There was not statistical difference in sex, age, course of disease, segment of intervertebral disc between two groups. Sixty patients of symptomatic lumbar intervertebral disc herniation were equally divided into three groups according to (bugle, hernia, prolapse) image on CT. Sixty patients of asymptomatic lumbar intervertebral disc herniation were equally divided into three groups according to (bugle, hernia, prolapse) image on CT. The age was 20-59 years old with an average of 38.5 years. Using regional assignment to give a mark respectively for every group. The sagittal diameter index (SI), anterior diastema of flaval ligaments, the width of superior outlet of latero-crypt, anteroposterior diameter of dura sac were respectively measured by sliding caliper. CT value and protrusible areas were respectively evaluated by computer tomography. Adopting mean value to measure three times. RESULTS: (1) There were not statistical difference in SI, CT value, hernia areas, anteroposterior diameter of dura sac between two groups (symptomatic lumbar intervertebral disc herniation and asymptomatic lumbar intervertebral disc herniation). There were statistical difference in the width of superior outlet of latero-crypt, anterior diastema of flaval ligaments between two groups (symptomatic lumbar intervertebral disc herniation and asymptomatic lumbar intervertebral disc herniation). (2) There were statistical difference in protrusible type,protrusible segment between two groups (symptomatic lumbar intervertebral disc herniation and asymptomatic lumbar intervertebral disc herniation). CONCLUSION: There were not necessary relationship between in protrusible size, location, type, compression degree and clinical symptom. This paper may support the mechanism of lumbar intervertebral dise herniation that associated with the following the three aspects: (1) spinal reserve capacity (SRC); (2) involved nerve roots escaping from herniated disc compression and its elastic lengthening function; (3) hypoxia symptosis and anti-ischemia injury compensation of involved nerve roots.
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