A prospective multi-institutional study was carried out to evaluate automated percutaneous discectomy in the treatment of lumbar disc herniations. Of the 327 patients who prospectively met the study criteria and were followed for longer than 1 year, 75.2% were successfully treated. When patients (n = 168) who prospectively did not meet the study criteria were treated, the success rate was 49.4%. One case of discitis was reported; otherwise, no other serious complications were noted, and specifically no vascular or nerve damage was encountered. This study indicates that automated percutaneous discetomy can be used successfully to treat lumbar disc herniations with minimal morbidity and emphasizes the need for proper patient selection.
The authors report 188 patients with acute cervical spine injury with fracture who underwent Halo-thoracic brace immobilization. The majority of the fractures were considered unstable. Early neurological assessment revealed 24 patients without neurological deficit. There were 164 patients with associated cervical cord injury; 84 patients with incomplete, and 80 patients with complete tetraplegia. Management consisted of skull traction and application of the Halo-thoracic brace about 1.3 weeks after admission. The average radiological union time was 11.5 weeks following a mean of 10.2 weeks of immobilization in a Halo apparatus. Satisfactory restoration of bone and ligament stability, with no significant posttreatment neck pain, was obtained in 168 cases (89%). This is comparable to the fusion rate achieved for cervical fractures in the literature. The follow-up periods range from 1 month to 6 years, with a mean of 10.8 months. The management and results in 73 patients with unilaterally and bilaterally locked facets with or without fractures are discussed. Complete tetraplegia is not considered a contraindication to Halo apparatus immobilization. The multiple factors responsible for overcoming the barrier of anesthetic skin are elucidated. Use of the Halo apparatus offers early mobilization and rehabilitation without neurological deterioration. Complications are few and insignificant.
A new method has been developed for percutaneously decompressing herniated lumbar disks. The method entails gaining access to the disk space through the use of an introduction system and a cannula. A 2-mm aspiration probe called a Nucleotome is then placed through the cannula into the disk space, and the nucleus pulposus is aspirated. Thirty-six patients have undergone the procedure, with a successful result in 31. There were no significant complications encountered, and the procedure is now being done on an outpatient basis. These preliminary results indicate that automated percutaneous diskectomy has the potential to replace laminectomy in the treatment of uncomplicated herniated disks.
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