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Peripheral Nerve InjuriesRANGER®NCT01526681

Registry of Avance® Nerve Graft's Utilization and Recovery Outcomes Post Peripheral Nerve Reconstruction

An observational study of Peripheral Nerve Injuries, run by Axogen Corporation at 49 sites in 4 countries.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

This study is a registry of general use of Avance Nerve Graft and is intended to evaluate the uses, response rates, and safety of Avance Nerve Graft in the real-life clinical setting. Read more about this study

Who is it for?
Any age
Conditions the study is for
Peripheral Nerve Injuries
What is being tested?
Processed Human Nerve Graft, Standard Treatment, Autogenous Nerve Graft, Direct Suture, etc. and Autogenous Nerve Graft
How many people
3,126 participants
Where
49 sitesin 4 countries
Study dates
Nov 2008to Nov 2028
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: Subjects surgically repaired with Avance Nerve Graft to reconstruct peripheral nerve discontinuities.

Who may be able to join

  • Males and Females who have undergone nerve repair using the Avance® Nerve Graft for the repair of a nerve injury
  • Returned for at least one post-operative follow-up visit
  • Have nerve transection injuries to the upper extremity;
  • Have undergone tension free end to end nerve coaptation on both the proximal and distal portion of the nerve gap with nerve autograft or nerve entubulation with nerve tube conduit at a participating ANG-CP-005 registry site after 2004 and;
  • Have completed sufficient follow-up assessments at a regeneration rate of 2mm/day to determine the outcomes of the repair or is willing to comply with site specific post-operative care procedures and assessments to determine the outcome of the repair.
  • Female ≥ 18 years old
Show all 16Show fewer
  • Undergo post mastectomy autologous breast reconstruction with one type of autologous flap (no stacked reconstructions or use of implant with autologous flap)
  • Neurotization must be completed using a donor nerve from the flap and a recipient nerve from the chest
  • Complete Sensory Assessment Testing with Semmes Weinstein Monofilaments (SWMF) and the following Breast-Q Questionnaires 60 - 120 days post-reconstruction:
  • Breast-Q Physical Well Being of the Chest
  • Breast-Q Satisfaction with Breast
  • Breast-Q Physical Well Being of the Abdomen
  • Breast-Q Abnormal Breast Sensations
  • Breast-Q Impact of Breast Sensation on Quality of Life
  • Breast-Q Return of Breast Sensation
  • Able to provide informed consent and are willing to comply with post-operative care procedures and assessments

Who cannot join

  • Subject who in the opinion of the investigator, have not or likely will not complete at least some portion of the investigator's recommended follow-up.
  • Addendum 1 (MATCH) Criteria:
  • Direct nerve repairs;
  • Nerve gaps greater than 70mm;
  • Subjects who, in the opinion of the investigator, were non-compliant to the investigator's post-operative treatment or rehabilitation instructions;
  • Any subject who at the discretion of the Investigator is not suitable for inclusion in the study.
Show all 19Show fewer
  • Addendum 2 (Sensation-NOW) Criteria:
  • Surgical history of secondary revision surgery for partial or total flap loss
  • Bilateral reconstruction with non-uniform treatment (i.e. 1 reconstructed breast is non-neurotized, 1 reconstructed breast is neurotized)
  • Currently prescribed medication known to impact nerve regeneration or to cause peripheral neuropathy
  • Currently undergoing IV chemotherapy or radiation
  • Any subject who at the discretion of the Investigator is not suitable for inclusion in the study or is unlikely to comply with follow-up schedule
  • Additional Eligibility criteria to Modules
  • Module 1: Native Skin Reconstructions with and without neurotization.
  • Buried flap reconstructions from nipple sparing mastectomy or skin sparing mastectomy OR a breast reconstruction from a skin sparing mastectomy with exposed flap skin in the peri-areolar region.
  • Sensory assessments must be completed on ≥ 8 Zones of Native Skin.
  • Center zone measurement may be on either Native Skin or Flap Skin.
  • All Inner and Outer zone measurements must be on Native Skin.
  • De-identified photo of the breast reconstruction with 9 zones identified.

Trial locations and contacts

49 sites in 4 countries.

49 sites in 4 countries

United States46 sites
  • RANGER: Hand & Upper Extremity Center of Georgia/Children's Hospital of Atlanta

    Atlanta, Georgia, 30342

  • Sensation-NOW: University of Colorado School of Medicine

    Aurora, Colorado, 80045

  • RANGER: Johns Hopkins University

    Baltimore, Maryland, 21205

  • Sensation-NOW: Johns Hopkins University

    Baltimore, Maryland, 21287

  • RANGER: Walter Reed National Military Medical Center

    Bethesda, Maryland, 20889

  • RANGER & MATCH: OrthoCarolina Research Institute, Inc.

    Charlotte, North Carolina, 28207

  • RANGER: University of Cincinnati

    Cincinnati, Ohio, 45220

  • Sensation-NOW: University of Cincinnati

    Cincinnati, Ohio, 45221

  • RANGER: Cleveland Clinic

    Cleveland, Ohio, 44195

  • RANGER & MATCH: University of Missouri - Columbia

    Columbia, Missouri, 65212

  • RANGER: Ohio State University Medical Center

    Columbus, Ohio, 43210

  • Sensation-NOW: Ohio State University Medical Center

    Columbus, Ohio, 43210

  • Sensation-NOW: University of Texas Southwestern Medical Center

    Dallas, Texas, 75390

  • RANGER: Duke University

    Durham, North Carolina, 27705

  • RANGER: University of North Texas/John Peter Smith Hospital

    Fort Worth, Texas, 76104

  • Sensation-NOW: University of North Texas/John Peter Smith Hospital

    Fort Worth, Texas, 76104

  • RANGER & MATCH: Campbell Clinic

    Germantown, Tennessee, 38138

  • Sensation-NOW: Baylor College of Medicine

    Houston, Texas, 77030

  • Sensation-NOW: Houston-Methodist Central

    Houston, Texas, 77030

  • Sensation-NOW: Houston-Methodist West/North

    Houston, Texas, 77094

  • RANGER & MATCH: University of Kansas Medical Center

    Kansas City, Kansas, 66160

  • Sensation-NOW: University of Kansas Medical Center

    Kansas City, Kansas, 66160

  • Sensation-NOW: University of Nevada, Las Vegas

    Las Vegas, Nevada, 89154

  • RANGER: University of Kentucky

    Lexington, Kentucky, 40506

  • RANGER: Texas Tech University HSC

    Lubbock, Texas, 79430

  • Sensation-NOW: Advanced Reconstructive Care, LLC

    Metairie, Louisiana, 70002

  • RANGER: University of Miami

    Miami, Florida, 33176

  • MATCH: Hennepin County Medical Center

    Minneapolis, Minnesota, 55415

  • Sensation-NOW: East Cooper Plastic Surgery

    Mt. Pleasant, South Carolina, 29464

  • RANGER & MATCH: Vanderbilt University

    Nashville, Tennessee, 37232

  • Sensation-NOW: Vanderbilt University

    Nashville, Tennessee, 37232

  • Sensation-NOW: University of Nebraska Medical Center

    Omaha, Nebraska, 68118

  • RANGER & MATCH: University of California - Irvine

    Orange, California, 92868

  • Sensation-NOW: University of Pennsylvania

    Philadelphia, Pennsylvania, 19104

  • RANGER & MATCH: Arizona Center for Hand Surgery

    Phoenix, Arizona, 85004

  • RANGER: Phoenix Children's Hospital

    Phoenix, Arizona, 85016

  • Sensation-NOW: Joshua Lemmon, MD, PLLC

    Richardson, Texas, 75802

  • Sensation-NOW: Virginia Commonwealth University

    Richmond, Virginia, 23284

  • RANGER: Multi-Disciplinary Specialists

    Rutherford, New Jersey, 07070

  • RANGER: San Antonio Military Medical Center

    San Antonio, Texas, 78231

  • Sensation-NOW: PRMA Plastic Surgery

    San Antonio, Texas, 78240

  • RANGER & MATCH: The Buncke Clinic

    San Francisco, California, 94114

  • RANGER & MATCH: University of Washington

    Seattle, Washington, 98195

  • Sensation-NOW: Stanford University

    Stanford, California, 94305

  • RANGER & MATCH: Florida Orthopaedic Institute

    Tampa, Florida, 33609

  • Sensation-NOW: George Washington University

    Washington D.C., District of Columbia, 20037

Other trials in United States

Austria1 site
  • RANGER: University Hospital

    Vienna

Other trials in Austria

Canada1 site
  • RANGER: North York General Hospital

    Toronto, Ontario, M2K 1E1

Other trials in Canada

United Kingdom1 site
  • RANGER & MATCH: University Hospital Birmingham, England

    Edgbaston, Birmingham, B15 2TH

Other trials in United Kingdom

About this study

Official title: A Multicenter, Registry Study of Avance® Nerve Graft Utilization, Evaluations and Outcomes in Peripheral Nerve Injury Repair

This study is a registry of general use of Avance Nerve Graft and is intended to evaluate the uses, response rates, and safety of Avance Nerve Graft in the real-life clinical setting. Optional addendums 1 and 2 included in the protocol are intended to establish comparative groups and focused subgroups within the registry.

Read the detailed description

This is a multicenter registry study to collect utilization, safety, and outcomes data from medical record chart review of nerve reconstruction procedures throughout the body with Avance® Nerve Graft.

Addendum 1 (MATCH) establishes a comparative arm to collect data on nerve injuries repaired with nerve autografts and nerve tube conduits at select RANGER® participating sites.

Addendum 2 (Sensation-NOW) establishes a focused arm to collect data on autologous breast reconstructive procedures where neurotization was completed. Post-mastectomy autologous breast reconstruction procedures without neurotization will serve as an internal control group to allow for comparisons.

Being tested
Processed Human Nerve Graft, Standard Treatment, Autogenous Nerve Graft, Direct Suture, etc., Autogenous Nerve Graft, Nerve Tube Conduit, Autologous Breast Reconstruction with Neurotization
Keywords
Sensory Nerve, Mixed Nerve, Motor Nerve, Neurotization, Nerve Injury, Peripheral Nerve Injury
Medical subject headings
Peripheral Nerve Injuries

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Processed Human Nerve GraftOther

    Implantation of appropriate length of processed human nerve graft at the time of surgery

  • Standard Treatment, Autogenous Nerve Graft, Direct Suture, etc.Other

    Historical control from established literature

  • Autogenous Nerve GraftOther

    Nerve gap reconstructions with autogenous nerve graft within the upper extremity

  • Nerve Tube ConduitDevice

    Nerve gap reconstructions with nerve tube conduit within the upper extremity

  • Autologous Breast Reconstruction with NeurotizationProcedure or surgery

  • Autologous Breast Reconstruction without NeurotizationProcedure or surgery

Study groups in NCT01526681
Study groupRoleWhat they receive
RANGER: Avance Nerve GraftProcessed Human Nerve Graft
Receives: Other: Processed Human Nerve Graft
Historical Control for Standard TreatmentLiterature review for outcomes from standard treatments, i.e. Autogenous Nerve Graft.
Receives: Other: Standard Treatment, Autogenous Nerve Graft, Direct Suture, etc.
MATCH Arm: Contemporary ControlAddendum 1: Autogenous Nerve Graft and Nerve Tube Conduit
Receives: Other: Autogenous Nerve Graft; Device: Nerve Tube Conduit
Sensation-NOW Arm: Breast NeurotizationAddendum 2: Post-mastectomy autologous breast reconstruction with or without neurotization
Receives: Procedure: Autologous Breast Reconstruction with Neurotization; Procedure: Autologous Breast Reconstruction without Neurotization

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Avance Nerve Graft: Incidence of Avance Nerve Graft Related Adverse Events

    Participants will be followed through the course of their recovery based on Physician's standard of care practice or until lost to follow-up.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

  2. RANGER and MATCH: Sensory Function as measured by Medical Research Council Classification (MRCC) for sensory recovery

    Participants will be followed for a change in sensory function, if applicable, of the reconstructed peripheral nerve through the course of their follow-up using Physician's standard of care sensory assessments or until lost to follow-up.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

  3. RANGER and MATCH: Motor Function as measured by Medical Research Council Classification (MRCC) for motor recovery

    Participants will be followed for a change in motor function, if applicable, to the reconstructed peripheral nerve through the course of their follow-up using Physician's standard of care motor assessments or until lost to follow-up.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

  4. Sensation-NOW- Breast Neurotization: Sensory Function Post Autologous Breast Reconstruction

    Participants will be followed for change in sensation through the course of their recovery using Physician's standard of care assessments or until lost to follow-up. Standard of care sensory assessment includes evaluation using Semmes Weinstein Monofilament kit measured in g/mm2.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

  5. Sensation-NOW- Breast Neurotization: Quality of Life Measurement Post Autologous Breast Reconstruction

    Participants will be followed for change in quality of life as measured by Breast Q through the course of their recovery or until lost to follow-up using Physician's standard of care assessments. Standard of care assessments may include evaluation of quality of life via other scales or may be qualitatively documented.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

  6. Incidence of conduit, autograft, or procedure related adverse events

    Participants will be followed through the course of their recovery based on Physician's standard of care practice or until lost to follow-up.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

Secondary outcomes (3)
  1. Pain Level

    Participants will be followed for a change in pain level as measured by VAS, when available, through the course of their recovery using Physician's standard of care assessments for pain or until lost to follow-up.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

  2. RANGER and/or MATCH: Quality of Life Following Reconstruction of Peripheral Nerve

    Participants will be followed for change in quality of life as measured by Disabilities of the Arm Shoulder and Hand Questionnaire (DASH), if available, through the course of their recovery or until lost to follow-up using Physician's standard of care assessments. Standard of care assessments may include evaluation of quality of life via other scales or may be qualitatively documented.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

  3. Cost of Care

    Participants will be followed for cost of care, as converted to USD, from the surgical nerve procedure through the course of their recovery or until lost to follow-up using available data in the medical record from Physician's standard of care.

    Measured: Through study completion or until lost to follow-up, approximately 3 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Feb 2012 (estimated)
  2. Study startNov 2008
  3. Primary completionNov 2028 (estimated)
  4. Study completionNov 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Other
Time perspective
Other
Enrolment
3,126 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01526681
Sponsor's protocol ID
ANG-CP-005
Acronym
RANGER®
Status last verified
Jan 2026
First submitted
1 Feb 2012
Last updated
26 Jan 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

An observational study of Peripheral Nerve Injuries, run by Axogen Corporation at 49 sites in 4 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 16 inclusion and 19 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 26 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 49 sites in United States, Austria, Canada, United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Avance Nerve Graft: Incidence of Avance Nerve Graft Related Adverse Events (time frame: Through study completion or until lost to follow-up, approximately 3 years). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Jan 2026.

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