Reflex test may help predict pain procedure success

NCT ID NCT02774694

Terminated Diagnosis Sponsor: Benno Rehberg-Klug Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This observational study is testing whether measuring the nociceptive flexion reflex (a spinal reflex) can predict which patients with chronic back or neck pain will get significant pain relief from interventional procedures like epidural injections or nerve blocks. Researchers will measure the reflex threshold using a device called Paintracker and compare it to pain reduction at 1 week, 1 month, and 3 months. The study aims to improve patient selection for these common but variably effective treatments.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to: If successful, this could help doctors identify which patients are most likely to get pain relief from injections or nerve blocks, making treatment more personalized.
What could go wrong: This is an observational study, not a treatment trial. The reflex test may not accurately predict outcomes, and the study is currently suspended, so results may be delayed or never completed.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Chronic Pain chronic pain syndrome Low Back Pain Neck Pain

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CHRONIC PAIN LOW BACK PAIN NECK PAIN

Contacts and locations

Locations

Hôpitaux Universitaires de Genève

Geneva, 1205, Switzerland

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