A Correlative Analysis And Radiological Measurement Of The Patients With LDH In Pre-Operation And Post-Operation

Objective: Lumbar intervertebral disc herniation (LIDH) is a common and frequently encountered disease of orthopaedics. There are many diffirent treatments to LIDH. And conservative treatment is no use to many patients. So in this condition operative treatment is necessary. The removal of ruptured lumbar disc . is generally accepted as a effective surgical treatment, meanwhile it is enerally acknowledged that it can break the construction and function of lumbar. Therefore this will effect the prostecdtive efficacy. Commonly this opinion mostly come from the findings during surgery and complications after operation, but it is lack of objective evaluation.The simplest and direct indication to reflect the construction and function of lumbar is X-ray. This study aims at evaluating the influence of operation to the construction and function of lumbar through measurement pro and post operation X-ray. In the mean time, the data was divided into groups by different modus operandi, and we establish objective indexes to evaluate the influence of different lumbar operations.Methods: 50 female and 50 male patients diagonosed LIDH aged from 18 to 69 were divided into 2 groups by different modus operandi. Then the AP, LP and bending X-ray was made pro-operation and 1 year later. The lumbar curvature, ante-protruding index, sacrum slant angle, lumbosacralangle and intervertebral space altitude etc were measured and statisticed by computer image processing system and SPSS10.0. Results:1. Among next age stage the indexes have no significant difference (p>0.05) . Lumbar curvature and sacrum slant angle diminish with the increase of age in group younger than 50. there have no significant difference in group older than 50. contrast to group under 26 years, there have significant difference(P<0.01).2. All indexes (lumbar curvature, ante-protruding index, sacrum slant angle and intervertebral space altitude) except lumbosacral angle of pro-operation group are smaller than post-operation group(P<0.05,p<0.01). The intervertebral space altitude is less than pre-operation group(p<0.01)3. The lumbar vertebrae curvature, anterior protruding angel, sacrum angle of lean and intervertebral space altitude of lamina of vertebra group are higher than windowing group (P<0.05).Conclusion:1. the construction and function of lumbar is gradually degenerating with age growing .but after age 50 this kind of degeneration is relatively stable. The lumbar curvature, ante-protruding index, sacrum slant angle, lumbosacral angle and intervertebral space altitude etc is significant deviation among groups before operation. So they are the dependable idex to evaluating lambar degeneration.2.The lumbosacral angle has not obvious change in pre-operation and post-operation. So ,it can effect the stabilization of lumbar, but it is not risk factor of resulting lambar degeneration.3.The lumbar curvature, ante-protruding index, The sacrum slant angle and intervertebral space altitude etc have significant deviation in pre-operation and post-operation. So they are risk factors of resulting lambar degeneration and effecting prostecdtive efficacy.4.The group with fenestration have less effection than the group with laminectomy to the lumbar curvature, ante-protruding index, The sacrum slant angle and intervertebral space altitude. So micro-trauma operation has less effeection to the construction and function of lumbar.