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Rapid detection and typing of human papillomaviruses by consensus polymerase chain reaction and enzyme-linked immunosorbent assay
Authors:M Poljak  K Seme
Affiliation:Department of Neurological Surgery, University of Wisconsin Medical School and Clinical Science Center, Madison, USA.
Abstract:This long-term prospective study evaluates the clinical results of subsequent laminectomy in 103 consecutive patients who initially underwent chemonucleolysis (CNL) or laminectomy for lumbar disc herniation. Between 1981 and 1994, 53 patients who had received CNL initially and then underwent laminectomy and 50 patients treated initially with laminectomy underwent a repeat laminectomy. Clinical assessment at 6 weeks showed a success rate of 80.8% for post-CNL laminectomy and 78% for repeat laminectomy. At 6 months, the success rate for patients treated with CNL was 86% versus 78.7% for laminectomy. At 12 months, the overall success rate for the CNL group was 80.4% versus 83.3% for the laminectomy group, but in patients who had not obtained relief from the first procedure the success rate for the second procedure was higher for the post-CNL patients. A questionnaire was sent to all patients for 1- to 13-year follow-up review. The average follow-up period was 6.6 years for post-CNL laminectomy and 5.2 years for repeat laminectomy. The long-term success rate (81.8%) was higher in the post-CNL group compared to 64.4% in the repeat laminectomy group. Seven patients in the post-CNL group and nine in the repeat laminectomy group had undergone a third operation. When these originally successfully treated patients were reassigned after unsuccessful outcomes, the success rate for the CNL groups was 72.7%, versus 51.1% in the laminectomy group (p = 0.049). Employment rates were 80% for patients with CNL (21.8% changed jobs) and 76.3% for patients undergoing laminectomy (48.3% changed jobs) (p = 0.036). In conclusion, patients who underwent laminectomies after receiving CNL had significantly better long-term results than those who had repeat laminectomies.
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