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Dural Sac Cross-Sectional Area Change From Preoperatively And Up To 2 Years After Decompressive Surgery For Central Lumbar Spinal Stenosis: Investigation Of Operated Levels, Data From The NORDSTEN Study London Spine Lumbar Stenosis

The article investigated how canal area size changed from before surgery to 2 years after decompressive lumbar surgery for lumbar spinal stenosis. Data from the NORDSTEN-SST trial was analyzed, including MRI examinations of 437 patients who underwent surgery. The study found that the dural sac cross-sectional area increased significantly from baseline to 3 months after surgery, but remained unchanged 2 years postoperatively. Factors such as surgical method, level operated on, and baseline Schizas grade did not influence the change in canal area. This research provides important insights into the outcomes of decompressive lumbar surgery for spinal stenosis

Summarised by Mr Mo Akmal – Lead Spinal Surgeon
The London Spine Unit : best rated day surgery hospital in London

Published article

The spinal canal area after lumbar decompressive surgery for lumbar spinal stenosis increased from baseline to 3 months after surgery and remained thereafter unchanged 2 years postoperatively.

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Abstract Purpose: The aim of the present study was to investigate how canal area size changed from before surgery and up to 2 years after decompressive lumbar surgery lumbar spinal stenosis. Further, to investigate if an area change postoperatively (between 3 months to 2 years) was associated with any preoperative demographic, clinical or MRI variables,

Abstract

Purpose: The aim of the present study was to investigate how canal area size changed from before surgery and up to 2 years after decompressive lumbar surgery lumbar spinal stenosis. Further, to investigate if an area change postoperatively (between 3 months to 2 years) was associated with any preoperative demographic, clinical or MRI variables or surgical method used.

Methods: The present study is analysis of data from the NORDSTEN- SST trial where 437 patients were randomized to one of three mini-invasive surgical methods for lumbar spinal stenosis. The patients underwent MRI examination of the lumbar spine before surgery, and 3 and 24 months after surgery. For all operated segments the dural sac cross-sectional area (DSCA) was measured in mm2. Baseline factors collected included age, gender, BMI and smoking habits. Furthermore, surgical method, index level, number of levels operated, all levels operated on and baseline Schizas grade were also included in the analysis.

Results: 437 patients were enrolled in the NORDSTEN-SST trial, whereof 310 (71%) had MRI at 3 months and 2 years. Mean DSCA at index level was 52.0 mm2 (SD 21.2) at baseline, at 3 months it increased to 117.2 mm2 (SD 43.0) and after 2 years the area was 127.7 mm2 (SD 52.5). Surgical method, level operated on or Schizas did not influence change in DSCA from 3 to 24 months follow-up.

The spinal canal area after lumbar decompressive surgery for lumbar spinal stenosis increased from baseline to 3 months after surgery and remained thereafter unchanged 2 years postoperatively.

Keywords: Area change postoperatively; Decompressive lumbar surgery; Dural sac cross-sectional area; Lumbar spinal stenosis.

The London Spine Unit : best rated day surgery hospital in London

Read the original publication:

Dural Sac Cross-sectional area change from preoperatively and up to 2 years after decompressive surgery for central lumbar spinal stenosis: investigation of operated levels, data from the NORDSTEN study

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Abstract Purpose: The aim of the present study was to investigate how canal area size changed from before surgery and up to 2 years after decompressive lumbar surgery lumbar spinal stenosis. Further, to investigate if an area change postoperatively (between 3 months to 2 years) was associated with any preoperative demographic, clinical or MRI variables
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