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CompletedNCT03317600Updated Jul 16, 2018

Postamputation Pain: Peripheral Mechanisms

An interventional study of Lidocaine and Placebo in Neuropathic Pain, Amputation, Traumatic and Nerve Block, sponsored by Danish Pain Research Center. Completed at 1 site in Denmark. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2018-07-16.

Sponsored by Danish Pain Research Center · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
12
Allocation
Randomized
Ages
18 Years to 85 Years
Sex
All
01

Study summary

Stump and phantom pain after amputation are common, but the responsible mechanisms are still not clarified. It has been suggested that phantom limb pain can be reduced by regional anaesthesia and in several recent studies, pain was reduced following intrathecal and intraforaminal blocks. In this study, the investigators want to investigate if spontaneous and evoked pain in amputees will be relieved by regional nerve blocks involving the damaged nerves.

02

Conditions studied

  • Neuropathic Pain
  • Amputation, Traumatic
  • Nerve Block
  • Phantom Limb Pain
  • Stump Pain
03

In context

Neuralgia

1,100 studies on the registry are indexed under Neuralgia; 241 are open to participants now.

This study's enrollment of 12 is below the median of 52 across 831 interventional studies indexed under Neuralgia.

Browse Neuralgia studies →

Lead sponsor

Danish Pain Research Center is the lead sponsor of 24 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Amputees with chronic amputation pain (stump or phantom pain) 3 or above on NRS (numerical ratio scale).

Exclusion criteria

Exclusion Criteria:

  • Severe somatic or psychiatric diseases
  • Other peripheral neuropathy
  • Lack of ability to cooperate to the clinical examination
  • Allergy to Lidocaine or similar analgetics
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Investigator)
Enrollment
12 participants (actual)

Study arms

  • Active comparator
    Lidocaine block

    Device: Lidocaine

  • Placebo comparator
    Isotonic saline block

    Drug: Placebo

Interventions

  • DeviceLidocaine

    Intervention is a nerve block with Lidocaine 2% with Adrenaline.

  • DrugPlacebo

    Intervention is a "placebo" nerve block with isotonic saline

06

What researchers measure

Primary outcomes

  1. Reduction in spontaneous pain on a Numeric Rating Scale (NRS: 0-10, 0 = no pain, 10 = worst possible pain)

    The patient will be asked about spontaneous pain, including stump and phantom pain on a Numerical Rating Scale (NRS: 0-10, 0 = no pain, 10 = worst pain).

    Time frame: From 0 minutes until 120 minutes after injection

Secondary outcomes

  1. Reduction in evoked pain on a Numerical Rating Scale (NRS: 0-10, 0 = no pain, 10 = worst possible pain).

    The patient will be asked about evoked pain on a Numerical Rating Scale (NRS: 0-10, 0 = no pain, 10 = worst pain). Evoked pain is triggered by a SOMEDIC brush, thermo rolls (20 degrees Celcius and 40 degrees Celcius) and pinprick with a von Frey filament (60 g).

    Time frame: From 0 minutes until 120 minutes after injection

07

Study locations

1 site
  • Danish Pain Research Center, Aarhus University Hospital
    Aarhus, 8000, Denmark
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Oct 2017 to primary completion in Feb 2018, 4 months.

Of 246 non-industry interventional studies with no phase under Neuralgia, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 41. This study's 4 months is below that.

Counting every sponsor, half of 264 studies reached it within 24 months; a quarter within 10 and three quarters within 41.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 13, 2017
First posted
Oct 23, 2017
StartActual
Oct 25, 2017
Primary completionActual
Feb 28, 2018
CompletionActual
Feb 28, 2018
Last update
Jul 16, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 16, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03317600
Lead sponsor
Danish Pain Research Center
Responsible party
Sponsor
First posted
Oct 23, 2017
Start date
Oct 25, 2017
Primary completion
Feb 28, 2018
Completion
Feb 28, 2018
Last update
Jul 16, 2018

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2018. You cannot join it, but the record below documents what was studied.

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