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Compare Ultrasound Assisted Cold Therapy and Lidocaine Injection to Treat Morton's Neuroma

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02838758
Recruitment Status : Completed
First Posted : July 20, 2016
Last Update Posted : November 6, 2018
Information provided by (Responsible Party):
David Spinner, Icahn School of Medicine at Mount Sinai

Brief Summary:
The purpose of this study is to evaluate the effectiveness of a device that delivers freezing temperature compared to injecting lidocaine (an anesthetic medication) in providing pain relief to patients with disorganized nerve bundle between the toes, also known as Morton's neuroma. The same ultrasound technology that the obstetricians use to visualize a fetus inside a pregnant woman will be used to help the study physician to locate the Morton's neuroma while precisely delivering the freezing temperature and lidocaine near the nerve.

Condition or disease Intervention/treatment Phase
Intermetatarsal Neuroma Device: Cryoablation Drug: Lidocaine Drug: Saline Phase 1

Detailed Description:

This study will be a 3-arm randomized single-blinded placebo controlled study in which human subjects with intermetatarsal neuralgia will receive subcutaneous normal saline or subcutaneous lidocaine or ultrasound guided cryoablation. The first follow up will take place 4 weeks post procedure to monitor the magnitude and duration of pain relief. Subjects will then be crossed over. Those who had received saline or lidocaine will receive ultrasound guided cryoablation. Individuals, who had previously been given ultrasound guided cryoablation without any improvement, may opt for another denervation procedure at 4 weeks. All of the participants will be followed up at 3 months post procedure to determine the magnitude and duration of pain relief.

Study procedures will be conducted by the principle investigator who is a Board Certified pain management attending physician and an expert in performing ultrasonography guided interventions The cryoablation device is routinely used to treat various painful pathologies at Mount Sinai and Beth Israel pain management offices. The device manual and instructions will be available at both locations. All research staff has prior experience working with individuals with foot and ankle injuries at Mount Sinai.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 10 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single (Participant)
Primary Purpose: Treatment
Official Title: A 3-arm Randomized Controlled Study Comparing Ultrasound-guided Cryoablation, Ultrasound-guided Perineural Lidocaine and Ultrasound-guided Perineural Saline to Treat Intermetatarsal Neuroma
Study Start Date : July 2016
Actual Primary Completion Date : June 1, 2018
Actual Study Completion Date : June 1, 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Ultrasound

Arm Intervention/treatment
Experimental: Cryoablation
Ultrasound guided perineural cryoablation. The mechanism of therapeutic cryoablation involves using short and repeated cycles of freezing and thawing to cause axonal degeneration and disrupt neuronal activity without damage to epineurium and perineurium.
Device: Cryoablation
A minimally invasive cryoablation device. It delivers focused nitrous oxide to the target tissue via a 22-gauge needle to create an approximately 9.4mm by 5.4mm spherical freezing zone of temperature between -20 to -100° C.
Other Name: Iovera

Active Comparator: Lidocaine
Ultrasound guided perineural lidocaine injection. Under ultrasound guidance, roughly 3cc of 2% lidocaine will be injected near the neuroma.
Drug: Lidocaine
Roughly 3cc of lidocaine will be injected near the intermetatarsal neuroma under ultrasound visualization.
Other Name: xylocaine

Placebo Comparator: Saline
Ultrasound guided perineural normal saline injection. Under ultrasound guidance, roughly 3cc of normal saline will be injected near the neuroma.
Drug: Saline
Roughly 3cc of saline will be injected near the intermetatarsal neuroma under ultrasound visualization.

Primary Outcome Measures :
  1. Numeric Pain Rating Scale [ Time Frame: up to 12 weeks ]

Secondary Outcome Measures :
  1. Lower extremity functional scale (LEFS) [ Time Frame: up to 12 weeks ]
    A 20-item instrument current level of difficulty with each activity. All 20 items are scored with a maximum score 4 for each item. Scoring ranges from 0-80. The lower the score the higher the disability.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Between the ages of 18 and 80 years old
  • Magnetic Resonance Imaging (MRI) confirmed diagnosis of Morton's neuroma - Refractory (greater than 3 month) symptoms to multiple conservative management, including physical therapy, nonsteroidal anti-inflammatory drugs (NSAIDS) and foot orthotics.
  • No history of systemic inflammatory conditions such as rheumatoid arthritis
  • Able to give written informed consent - Subject has been on a stable dose of analgesic mediation (or not on analgesic medication) for at least 3 weeks and is agreeable to remaining on current regimen for the duration of the study.

Exclusion Criteria:

  • Diagnosed complex regional pain syndrome (CRPS)
  • Pregnancy - History of intolerance, hypersensitivity or known allergy to lidocaine - Recent history of recent surgical intermetatarsal neuronectomy (within previous 6 months) - Coagulation disorder - Current infection
  • Intermetatarsal bursitis
  • Metatarsophalangeal joint instability/capsulitis
  • Metatarsal stress fracture
  • Lumbar radiculopathy
  • Tarsal tunnel syndrome
  • Frieberg's infraction
  • Painful callosities associated with toe deformities
  • Peripheral neuropathy
  • Diabetes mellitus and peripheral vascular diseases
  • Insufficient command of English to complete self-¬report instruments.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02838758

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United States, New York
Icahn School of Medicine at Mount Sinai
New York, New York, United States, 10029
Sponsors and Collaborators
Icahn School of Medicine at Mount Sinai
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Principal Investigator: David Spinner, DO Icahn School of Medicine at Mount Sinai

Miller, SJ, Nakra, A. Morton's neuroma. In McGlamry's Comprehensive Textbook of Foot and Ankle Surgery, 231-252, Lippincott, Williams, &Wilkins, New York, 2001

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Responsible Party: David Spinner, Associate Professor, Icahn School of Medicine at Mount Sinai Identifier: NCT02838758     History of Changes
Other Study ID Numbers: GCO 16-1139
First Posted: July 20, 2016    Key Record Dates
Last Update Posted: November 6, 2018
Last Verified: November 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Keywords provided by David Spinner, Icahn School of Medicine at Mount Sinai:
Morton's neuroma
Intermetatarsal neuroma
forefoot pain
ultrasound guided cryoablation
ultrasound guided perineural lidocaine injection
Additional relevant MeSH terms:
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Neuromuscular Diseases
Morton Neuroma
Nerve Sheath Neoplasms
Neoplasms, Nerve Tissue
Neoplasms by Histologic Type
Foot Diseases
Musculoskeletal Diseases
Joint Diseases
Peripheral Nervous System Diseases
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms
Anesthetics, Local
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Anti-Arrhythmia Agents
Voltage-Gated Sodium Channel Blockers
Sodium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action