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Lumbar Spinal Canal Stenosis – An Evaluation Of Surgical Treatment

Author(s): George H L | Anawr Marthya, | Patinharayil Gopinathan

Journal: Journal of Orthopaedics
ISSN 0972-978X

Volume: 4;
Issue: 1;
Date: 2007;
Original page

Keywords: Spinal canal stenosis | Claudication

This study was done to evaluate the symptomatic and functional outcome of surgical management in Lumbar Spinal Canal Stenosis. A prospective study for evaluating the symptoms and surgical outcome in patients with symptomatic Lumbar Spinal canal Stenosis was conducted in 90 patients during the period 2001-2004. Mean duration of follow up in these patients was 24 months.The surgical techniques used were laminectomy, laminectomy & discectomy, laminectomy, discectomy with foraminal decompression, laminectomy with posterior instrumentation, laminectomy with in situ fusion and posterior instrumentation.Of the 90 patients studied, 37 patients (41%) showed improvement in motor functions. Sensory improvement was seen in 20 patients (21.6%). During the follow-up 16 patients (17.6%) regained normal deep tendon reflex. Out of the 51 patients who had a positive straight leg raising test before the surgery, 27 (29.2%) improved during the follow-up. Claudication distance seems to vary when examined at different times in the same person. However, 44 patients (48.4%) showed improvement in claudication distance during the follow-up. 49 patients (49.5%) had improvement in radicular pain. The average pre-operative Oswestry score of 90 patients before surgical intervention was 62 and after surgery the score came down to 18. Follow-up of functional outcome by modified MacNab criteria showed that, 43 patients had excellent outcome, 29 patients had good outcome, 10 had fair and 8 patients had poor outcome.We conclude that surgical procedures had good functional outcome as shown by Oswestry score and MacNab criteria during the follow-up.
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