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Surgical outcomes of decompressive laminectomy by transspinous approach for degenerative lumbar spinal stenosis.
JPMA. the Journal of the Pakistan Medical Association 2018 November
OBJECTIVE: To assess clinical and radiographical outcomes of transspinous decompression technique for the treatment of degenerative central lumbar spinal stenosis.
METHODS: The single-centre, non-randomised interventional, prospective, observational study was conducted Neurosurgery Clinic of Mazhar Osman Research and Training Hospital for Psychiatry and Neurology, Istanbul, Turkey from May 2013 and May 2016 and comprised adult patients with refractory symptoms from degenerative central lumbar spinal stenosis who underwent lumbar spinous processsplitting laminectomy. Pre- and post-operative Oswestry Disability Index score, visual analogue scale for overall pain, maximum walking distance and anteroposterior diameter of the spinal canal on magnetic resonance imaging were assessed on follow up examination. SPSS 22 was used for data analysis.
RESULTS: Of the 89 patients, 7(7.86%) were lost to follow-up, while 82(92.14%) completed the study. Of them, 42(51%) were women and 40(49%) were men. Overall mean age was 63.86±10.02 years (range: 40-85 years). A total of 95 transspinous decompressive laminectomies were performed. Mean number of decompressed spinal segments was 1.16. Median duration of surgical procedure was 45 min, while mean length of hospital stay was 1.22±0.47 days. Mean decrease in pre operative Oswestry Disability Index scoreat 1-year was 56.4% and overall visual analogue scale was 55.9%.Mean increase of 155.2% was documented over pre-operative maximum walking distance. Radiological assessment revealed a 40.7% increase in the mean and anteroposteriordiameter of the spinal canal at the level of the target lesion. The improvement in various parameters was statistically significant (p<0.001)..
CONCLUSIONS: Lumbar spinous process-splitting laminectomy led to significant improvement with respect to patient-reported perceived recovery, functional disability and radiological evidence of effective surgical decompression in patients with lumbar spinal stenosis..
METHODS: The single-centre, non-randomised interventional, prospective, observational study was conducted Neurosurgery Clinic of Mazhar Osman Research and Training Hospital for Psychiatry and Neurology, Istanbul, Turkey from May 2013 and May 2016 and comprised adult patients with refractory symptoms from degenerative central lumbar spinal stenosis who underwent lumbar spinous processsplitting laminectomy. Pre- and post-operative Oswestry Disability Index score, visual analogue scale for overall pain, maximum walking distance and anteroposterior diameter of the spinal canal on magnetic resonance imaging were assessed on follow up examination. SPSS 22 was used for data analysis.
RESULTS: Of the 89 patients, 7(7.86%) were lost to follow-up, while 82(92.14%) completed the study. Of them, 42(51%) were women and 40(49%) were men. Overall mean age was 63.86±10.02 years (range: 40-85 years). A total of 95 transspinous decompressive laminectomies were performed. Mean number of decompressed spinal segments was 1.16. Median duration of surgical procedure was 45 min, while mean length of hospital stay was 1.22±0.47 days. Mean decrease in pre operative Oswestry Disability Index scoreat 1-year was 56.4% and overall visual analogue scale was 55.9%.Mean increase of 155.2% was documented over pre-operative maximum walking distance. Radiological assessment revealed a 40.7% increase in the mean and anteroposteriordiameter of the spinal canal at the level of the target lesion. The improvement in various parameters was statistically significant (p<0.001)..
CONCLUSIONS: Lumbar spinous process-splitting laminectomy led to significant improvement with respect to patient-reported perceived recovery, functional disability and radiological evidence of effective surgical decompression in patients with lumbar spinal stenosis..
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