RESUMEN
Objective To evaluate the clinical results and the value of usefulness with the operation methods of posterolateral transpedicular approach in treating thoracic disc herniation. Methods Selecting the patient who treated in our hospital from November 1999 to November 2003. In all the 45 patients who suffered from thoracic disc herniation, we had got 43 patients followed up, the following-up times were from 1.2 to 3.5 years. 38 patients were treated with posterolateral unilateral transpedicular approach operation method. There were 26 males and other 19 females. The patients were from 30.5 years old to 67.5 years old, and the mean age was 46.5 years old. The interval between onset of symptoms and operation ranged from 5 to 12 months, and 9 months for average. In this group, 45% patients were involved in T9-10 and T10-11 disc herniation, 4 cases(11%) in T8-9, 4 cases(11%) in T11-12, and 4 cases(11%) in T12L1. All patients underwent X-ray and MR examination. 22 patients underwent myelography, 25 patients underwent CT or CTM examination. Using Otanni scored system to evaluate the clinical results. Selecting the SPSS 11.5 to do the statistics works. Results A perfect result was found in 16 patients, a good result was found in a further 18 patients, and a fair result was found in 2 patients the outcome was unchanged with no effect in 2 cases. No clinical or radiographic features of instability, nervous symptoms and wound infection were found. The clinical satisfaction rate was 89.74%, the results showed that it was a good result of posterolateral entrance operation. Conclusion The posterolateral transpedicular entrance operation shows a good result in treating patients who suffered from thoracic disc herniation.
RESUMEN
Objective To evaluate the bony variations in lumbar vertebral body among the patients with lnmbar disc herniation and determine its significance to microendoscopic discectomy(MED). Methods The CT images of 160 patients who underwent MED for lumbar disc herniation were reviewed. Measurements of vertebral bony dimensions related to surgical procedure were recorded, which included the angle of spinal process and lamina, spinal process direction, length, thickness and angle of the laminar, facet depth, spinal process width, and the distance between facets and lamina. The relationship between the bony variations and clinical outcome was analyzed. Results The majority of anatomic parameters are greater in male patients and in L5S1 segment than those in female and in L 4-5 (P