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More info
You can access this
clinical trial
if you have
Spinal Stenosis or Intermittent Claudication
and you are
between 50 and 90
years old
The phase for this study is not defined.
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The purpose

There is no international consensus on evaluation and surgical treatment of Lumbar Spinal Stenosis (LSS). The indication for operative treatment is relative, and the variation in surgical rates and procedures is significant, both within and between countries. Understanding practice-based variety is critical since these differences may reflect a disparity in quality of the health care in different institutions, regions, or countries. Norway, Sweden, and Denmark do all have National spine registers for research and quality assessment. Comparing indications for surgery, selected procedure, patient reported outcomes, and factors predicting outcome after surgery for LSS between these countries could provide information about optimal indications and strategy for surgery. Register-based studies have advantages such as large sample sizes and high external validity, but also limitations such as lower follow-up rates, and inferior data quality compared to clinical trials. Hypotheses: Between these three countries, there are no differences in (i) indications for surgery, (ii) patient-reported outcome after surgery or (iii) risk factors associated to outcome are similar.

Provided treatments

  • Procedure: Surgery for lumbar spinal stenosis in Norway
  • Procedure: Surgery for lumbar spinal stenosis in Sweden
  • Procedure: Surgery for lumbar spinal stenosis in Denmark

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT02897947. The sponsor of the trial is St. Olavs Hospital and it is looking for 7500 volunteers for the current phase.
Official trial title:
Outcome of Surgery for Lumbar Spinal Stenosis - a Comparison of Data From Three National Quality Registries