The Pirmary Establishment Of Three-dimensional Digital Model In Lumbar Disc Herniation

Objectives: Lumbar disc herniation is the most common disease in spineSurgery. It has been more than80years since launching lumbar discectomysurgery. Although the medical technology to lumbar disc herniation has beenimproved a lot by spine surgeons, many reports have indicated that there aremany clinical case reports of misdiagnosis of lumbar disc herniation,secondary surgery or even multiple surgeries. So it is still to be discussedthat the surgical principles and surgical programs to different pathologicaltypes and clinical manifestations of lumbar disc herniation. Many scholars fromhome and abroad have come up with many methods of diagnostic typing butthere exists some limitations and errors which need to be improved byadvanced technology. This paper tends to use three-dimensional imagingtechnology to make three-dimensional reconstruction of the lumbar discherniation patient’s original radiographic image, under the three-dimensionalstructure to observe the protruding disc position and nearby nerve rootsrelations, and combining some classification and diagnosis methods to maketheoretical basis to clinical diagnosis of lumbar disc herniation. Method: choose one case of lumbar disc herniation patient in our hospitalfrom January2014-January2015and then import lumbar disc herniationpatient’s original CT, MRI image to digital three-dimensional medical imaginginteractive processing system17.0and by threshold selection,three-dimensional model calculations, split, trim and a series of steps to buildlumbar model of the lumbar disc herniation patient. And then on the basis ofour experimental Design to observe the Lumbar disc herniation Typing,positional relation of protruding disc and nerve root and root dysplasia type.And then choose a normal case of adult’s CT, MRI Original Picture to makethree-dimensional reconstruction and then observe the differences of the twogroups.Result: a case of35-year-old-male lumbar disc herniation patient and theprotruding sections is lumbar4/5. According to lumbar disc observationflowchart to make observation and measurement to highlight discs. First makeregional location that Herniation skewed to the right, the left and right disclocation is in the central district, facet-gu, and observe the upper and lowerProtruding disc is in horizontal disc and the positional relationship betweennerve roots and protruding discs is axillary region outstanding. What’s more,there is no combined nerve root abnormalities. According to the result,projections sagittal diameter is12.08mm and sagittal diameter of the midpointof the transverse diameter is8.20mm, the biggest sagittal diameter is17.04mm, and the midpoint sagittal diameter is24.22mm, and the disc indexwas0.24. Furthermore there is no herniation in lumbar segmental and nonerve root abnormalities in the23-year-old male case. Conclusion: Lumbar three-dimensional reconstruction techniques couldclearly indicate the positional relation between herniation and nerve root,which can reduce errors of lumbar disc type in three-dimensional diagnosis.And it is clearer and more straight. Because it still needs to be adjusted, thispaper just make reconstruction of the two cases and we should combinelumbar disc herniation patients’ clinical symptoms to add appraisal of thetyping contents. During the process of model-making, we should subjoinligaments, muscles and other tissues to observe the influence to theconstruction, which will make the model better and provide more convenientand useful diagnosis and treatment of lumbar disc herniation.