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More info
You can access this
clinical trial
if you have
Intervertebral Disc Displacement or Sciatica
and you are
between 18 and 65
years old
The phase for this study is not defined.
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The purpose

Purpose: The incidence of surgery for lumbar disc hernia varies. According to the national spine registries in Sweden, Norway and Denmark, there is a 30-60% difference in surgical incidence between these countries. The cause for this difference is not known. It may reflect a difference in incidence of lumbar disc hernia, but with a similar socio-economic and ethnical background in these countries, it is more likely that the differences are due to varying surgical indications. Comparing indications for surgery, patient reported outcome and factors predictive for outcome after surgery for lumbar disc hernia in these countries could provide information about optimal indications for surgery. Hypotheses: (i) there are no differences in patient-reported outcome after surgery between these countries, (ii) there are no differences in indications for surgery between these countries and (iii), factors that predict outcome are similar in these countries. Method of research: By using data from three Nordic national spine registers, we will compare baseline data, indications for surgery and patient reported outcome one year after surgery for lumbar disc herniation. Register based studies have advantages such as large sample sizes, reflecting real life, but they also have limitations such as lower follow-up rates than clinical trials. A non-response analysis will be performed to take this into account.

Provided treatments

  • Procedure: Lumbar disc hernia surgery

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: NCT02889484. The sponsor of the trial is Karolinska Institutet and it is looking for 7500 volunteers for the current phase.
Official trial title:
Outcome of Surgery for Sciatica - a Comparison of Data From Three National Quality Registries