Journal of spinal disorders
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Five cadaveric pelves and 40 dry bony specimens were used to assess the feasibility of the lumbosacral plate fixation extending to beyond the S1 region and quantitatively to evaluate the posterior sacroiliac region and the dimensions of S1 and S2 pedicle and lateral mass. Partial removal of the posterior ilium was undertaken to measure the surface area available for plate fixation on the dorsal aspect of the sacrum. The results showed that the average distances between the outer edges of S1 and S2 dorsal foramina and the medial edge of the posterior ilium increased from 11.3 mm before removal of a portion of the medial posterior ilium to 16.6 mm after removal at the S1 level, and from 8.4 mm before removal of partial medial posterior ilium to 13 mm after removal at the S2 level, respectively. ⋯ The average depths of the S1 and S2 lateral mass were 37.3 and 33.9 mm in the direction anterolateral to the sagittal plane, respectively. In cases of vertebral metastases or osteoporosis, plating extending to S2 may be needed if good bony purchase cannot be achieved by the S1 pedicle or lateral mass screw. This study suggested also that partial removal of the posterior ilium enhances the space on the posterior aspect of the sacrum without severe compromise of the sacroiliac joint.
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We present a case of an extradural thoracic spinal angiolipoma in a 27-year-old woman. The epidural tumor was evaluated with computerized tomographic scans and magnetic resonance imaging scans. The tumor was removed, and the clinical symptoms improved remarkably.
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In the cervical spine, routine and contrast magnetic resonance (MR)- and computed tomography (CT)-based studies may fail to differentiate between an ectatic vertebral artery and a solid foraminal mass. A complete cervical and lumbar Myelo-CT scan in a 67-year-old female with lumbar stenosis revealed an incidental, left-sided C3-C4 foraminal mass. ⋯ The possibility of a vertebral artery anomaly should be considered in patients with asymptomatic lateral and foraminal cervical lesions on CT studies. In these patients, routine MR and MR angiography are necessary to demonstrate the status of the vertebral artery in the foramen.
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The use of ketorolac was studied in patients undergoing lumbar laminectomy and those receiving lumbar fusion with or without instrumentation. Laminectomy patients in the ketorolac group used significantly less narcotic analgesic than did those in the narcotic treatment group. Ketorolac patients in both surgical categories experienced better pain control than narcotic group patients did. ⋯ Postoperative total drug costs were significantly greater in both ketorolac treatment groups. A one-half day decrease in hospitalization was noted for laminectomy ketorolac patients. The overall annual financial impact of the use of ketorolac in lumbar spine patients is a net savings of $211,095.