Could a shot in the good leg stop phantom pain?
NCT ID NCT06045936
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether injecting lidocaine around the sciatic nerve of the intact leg can reduce phantom or residual limb pain in people with lower-limb amputations. Twenty adults who have had pain for over six months despite other treatments will receive either the nerve block or a placebo. The goal is to see if this approach provides meaningful pain relief and improves daily function.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2024
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Lower extremity amputation performed more than 12 months before study enrollment * PLP/RLP in affected amputated limb \> 4 on NRS26 * Pain duration of more than 6 months despite a trial of conservative therapies for at least 2 months, including oral medications, topical medicines, physical therapy, and physical modalities (i.e., heat, cold, transcutaneous electrical nerve stimulation, phonophoresis) * Willingness to undergo image guided diagnostic nerve block Exclusion Criteria: * Refusal / inability to participate or provide consent * Contraindications to diagnostic nerve block * Non-neurogenic source of PLP/RLP * Current opioid use \> 50 morphine milligram equivalents per day * Any interventional pain treatment in the residual limb within the last 30 days * Severe uncontrolled medical condition (i.e., hypertensive crisis, decompensated hypothyroidism) * Use of investigational pain drug within past 30 days or other concurrent clinical trial enrollment
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Mayo Clinic Health System - Mankato
RECRUITINGMankato, Minnesota, 56001, United States
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