Registry of Avive® Soft Tissue Membrane Utilization in Selected Applications of Acute Trauma of the Upper Extremity (ASSIST)

A Multicenter, Ambispective, Clinical Outcomes Registry Study of Avive® Soft Tissue Membrane Utilization in Selected Applications of Acute Trauma of the Upper Extremity

A registry study to evaluate the role of Avive® Soft Tissue Membrane in the management of nerve injury associated with acute trauma in the upper extremity.

Study Overview

• Status: Terminated
• Conditions: Acute Upper Extremity Trauma
• Intervention / Treatment: Other: Minimally Processed Human Umbilical Cord Membrane; Other: Standard Surgical Procedures

Detailed Description

This is a multicenter outcomes registry study of Avive® Soft Tissue Membrane in the management of nerve injuries associated with selected upper extremity acute trauma. The study will evaluate clinical condition, economic impact, and functional outcomes.

• Study Type: Observational
• Enrollment (Actual): 7

Contacts and Locations

Study Locations

• United States
  • Florida
    • Tampa, Florida, United States, 33609
      • Florida Orthopaedic Institute
  • Indiana
    • Indianapolis, Indiana, United States, 46260
      • Indiana Hand to Shoulder Center
  • South Carolina
    • Spartanburg, South Carolina, United States, 29307
      • Upstate Hand Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 5 years to 70 years (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Subjects who have had surgical intervention for one or more of the targeted acute upper extremity traumas

Description

Inclusion Criteria:

1. Subjects 5 to 70 years of age, inclusive;

2. Sign and date an IRB/IEC -approved written informed consent form (ICF) prior to initiation of any study activities;

   1. Group One only: Subject enrollment (ICF completion) must be completed within 2 weeks (7-14 days) post-operatively of the targeted surgical procedure;
   2. Group Two Retrospective subjects only: Sign and date an IRB/IEC - approved written informed consent form (ICF) prior to initiation of any study activities if required per the governing IRB;
3. Group One only: Subjects who have undergone placement of Avive® Soft Tissue Membrane over at least one exposed nerve, circumferentially, or as an overlay between the exposed nerve(s) and the surrounding wound bed during surgical intervention following one or more of the following targeted acute upper extremity traumas (selected injuries): Spaghetti Wrist, Distal Radius Fractures, Medial Epicondyle Fractures, Flexor Tenolysis at Wrist, and/or Ballistic Injuries in the Forearm and/or Hand. This surgical intervention must have been completed within 60 days from the date of injury;
4. Group Two only: Subjects who have undergone surgical intervention for one or more of the following targeted acute upper extremity traumas (selected injuries): Spaghetti Wrist, Distal Radius Fractures, Medial Epicondyle Fractures, Flexor Tenolysis at Wrist, and Ballistic Injuries in the Forearm and/or Hand in the past 5 years without placement of a surgical implant over the exposed nerve, circumferentially, or as an overlay between the exposed nerve(s) and the surrounding wound bed during surgical intervention. This surgical intervention must have been completed within 60 days from the date of injury;
5. Group Two only: Subjects must have at least 1 qualifying post-operative injury assessment;
6. Subject is willing and able to comply with all aspects of the treatment and evaluation schedule.

Exclusion Criteria:

1. Subjects with complete transection of all nerves affected by one or more of the following selected injuries: Spaghetti Wrist, Distal Radius Fractures, Medial Epicondyle Fractures, Flexor Tenolysis at Wrist, and Ballistic Injuries in the Forearm and/or Hand. Subjects with nerve transection(s) must also have ≥1 affected nerve intact (non-transected) for treatment with Avive® Soft Tissue Membrane (Group One) or without treatment with a surgical implant (Group Two);
2. Subjects with Type 1 Diabetes Mellitus or Type 2 Diabetes Mellitus requiring regular insulin therapy;
3. Subjects who are currently receiving, or have previously received, treatment with chemotherapy, radiation therapy, or other known treatment which affects the growth of the neural and/or vascular system;
4. Subjects that are currently taking, or have previously used, a medication that is known to cause peripheral neuropathy;
5. Subjects with a history of chronic ischemic condition of the upper extremity; and
6. Any subject who, at the discretion of the Investigator, is not suitable for inclusion in the study.

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Avive® Soft Tissue Membrane; Subjects with utilization of Avive® Soft Tissue Membrane on an impacted but intact nerve during a surgical procedure for one of the following targeted acute upper extremity traumas (selected injuries): Spaghetti Wrist, Distal Radius Fracture, Medial Epicondyle Fracture, Flexor Tenolysis at Wrist, and Ballistic Injuries in the Forearm and/or Hand.	Other: Minimally Processed Human Umbilical Cord Membrane; Implantation of minimally processed human umbilical cord membrane at the time of surgery
Standard Surgical Procedures - Control Arm; Subjects who have undergone surgical procedures for the same selected injuries, but without placement of a surgical implant on an impacted but intact nerve.	Other: Standard Surgical Procedures; Standard surgical intervention for at least one targeted acute upper extremity trauma

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes in QuickDASH (Disabilities of Arm, Shoulder, Hand) score at 2,4,8,12,16,24, and 52 post-operative weeks (Adult subjects only).	Adult patients will be assessed for changes in functional status using the QuickDASH outcomes assessment. The quickDASH is an abbreviated version of the original DASH outcomes measures and is comprised of an 11-item patient reported questionnaire used to assess physical function and severity of symptoms in patients with musculoskeletal disorders of the upper limb. Each of the items in the quickDASH use a 5-point Likert scale to assess the corresponding severity or functional parameter. The outcome measure is scored based on the formula ([sum of n responses)/n]-1)(25), where n represents the number of completed items. Computed scores range from 0 (no disability) to 100 (most severe disability).	2, 4, 8, 12, 16, 24, and 52 weeks
Changes in PROMIS Pediatric Upper Extremity/Parent Proxy Upper Extremity (PUE/PPUE) outcomes assessment at 2,4,8,12,16, 24, and 52 post-operative weeks (Pediatric subjects only)	The Patient Reported Outcome Measurement Information System (PROMIS®) - pediatric Related Measures is a set of person-centered measures that evaluates and monitors a patient's physical health and pain (pediatric patients). Short forms containing fixed sets of 4-10 items or questions are included for each domain. All PROMIS scores are presented as T-scores where the T-score is the standardized score with a mean of 50 (range 20-80) and a standard deviation of 10. Higher scores indicate more of the concept being measures where sometimes the concept is desirable (e.g., physical function) and sometimes this it is undesirable (e.g., fatigue). PROMIS instruments are scored using item-level calibrations based on response patterns by HealthMeasures Scoring Service (https://www.assessmentcenter.net/ac_scoringservice).	2, 4, 8, 12, 16, 24, and 52 weeks
Change in Visual Analogue Scale (VAS) For Pain Score at 2, 4, 8, 12, 16, 24, and 52 post-operative weeks	The Visual Analog Scale (VAS) For Pain is a patient reported outcomes scale whereby the patient indicates his/her current pain level by making a mark on a continuous horizontal 10 centimeter (100 millimeter) line. The distance from the 0 millimeter to the patient's mark corresponds to the amount of pain the subject is currently experiencing. VAS for Pain data are recorded as the number of millimeters from the left of the line to the patients mark across the range of 0-100 millimeters, with 0 millimeter representing no pain and 100 millimeters representing "the worst pain imaginable".	2, 4, 8, 12, 16, 24, and 52 weeks
Changes in Reported Pain Using the Faces Pain Scale-Revised Scale (FPS-R) assessment at 2, 4, 8, 12, 16, 24, and 52 post-operative weeks	Pediatric patients will be assessed for changes in patient reported outcomes using the FPS-R. The Faces Pain Scale - Revised (FPS-R) is a self-report measure of pain intensity developed for children. It was adapted from the Faces Pain Scale to make it possible to score the sensation of pain on the widelya accepted calculated 0-to-10 metric. The scale shows a close linear relationship with visual analog pain scales across the age range of 4-16 years. The calculated score ranges from 0 ("no pain") to 10 ("very much pain").	2, 4, 8, 12, 16, 24, and 52 weeks
Changes in patient reported health status Using SF-36 patient reported health survey at 2, 4, 8, 12, 16, 24, and 52 post-operative weeks	Adult patients will be assessed for changes in patient reported health status using the SF-36 patient reported health survey. The SF-36 measures overall health status and consists of eight scaled scores which are the weighted sums of the questions in their section. Each scale is directly translated into a 0-100 metric scale. Scoring ranges from 0 (maximum disability to 100 (no disability).	2, 4, 8, 12, 16, 24, and 52 weeks
Changes in KINDL Health-Related Quality of Life questionnaire for children at 2, 4, 8, 12, 16, 24, and 52 post-operative weeks	The KINDL is a generic quality of life instrument used to assess Health-Related Quality of Life in children and adolescents aged 3 years and older. The questionnaire is comprised of 24 items which assess various quality of life domains using 5-point Likert scales. Calculated scores range from 0 (lower quality of life) to 100 (higher quality of life).	2, 4, 8, 12, 16, 24, and 52 weeks
Change in Patient Rated Wrist Evaluation	Patients will be assessed for changes in patient reported outcomes using the Patient Rated Wrist Evaluation (PRWE)(Applicable to Injuries Affecting the Wrist)	2, 4, 8, 12, 16, 24, and 52 weeks
Change in Sensory Function as measured by Medical Research Council Classification (MRCC) for Sensory Recovery	Patients will be assessed for changes in 2-Point Discrimination on a scale from 0 to 4 with 0 representing no sensation and 4 representing a 2-point discrimination measure between 2-6 representing normal sensation.	2, 4, 8, 12, 16, 24, and 52 weeks
Change in Motor Function as measured by Medical Research Council Classification (MRCC) for Motor Recovery	Patients will be assessed for changes in muscle strength measured on a scale from 0 to 5, with 0 equal to no movement and 5 equal to normal muscle contraction against resistance.	2, 4, 8, 12, 16, 24, and 52 weeks
Change in Motor Function as measured by Grip and Pinch Strength	Patients will be assessed for changes in grip and pinch strength measured in kg force	2, 4, 8, 12, 16, 24, and 52 weeks
Change in Motor Function as measured by Range of Motion	Patients will be assessed for changes in range of motion measured in degrees	2, 4, 8, 12, 16, 24, and 52 weeks
Change in Tinel's Sign	Patients will be assessed for presence of Tinel's Sign	2, 4, 8, 12, 16, 24, and 52 weeks
Incidence of Adverse Events Associated with the Placement of Avive Soft Tissue Membrane	Adverse events are defined as any untoward event experienced by a patient that is related to the nerve repair (whether or not considered product related by the Principal Investigator or Sponsor) or any even that has changed adversely in nature, severity or frequency.	2, 4, 8, 12, 16, 24, and 52 weeks
Health Care Economic Impact based on Resource Utilization and Associated Costs	Patients will be assessed for cost of procedures, post-procedure medications, rehabilitation, re-hospitalization	2, 4, 8, 12, 16, 24, and 52 weeks

Collaborators and Investigators

• Sponsor: Axogen Corporation

Study record dates

Study Major Dates

• Study Start (Actual): December 1, 2018
• Primary Completion (Actual): December 17, 2020
• Study Completion (Actual): December 17, 2020

Study Registration Dates

• First Submitted: May 6, 2019
• First Submitted That Met QC Criteria: May 7, 2019
• First Posted (Actual): May 9, 2019

Study Record Updates

• Last Update Posted (Actual): August 20, 2025
• Last Update Submitted That Met QC Criteria: August 15, 2025
• Last Verified: August 1, 2025

More Information

Terms related to this study

• Keywords: Nerve Repair; Peripheral Nerve Injury; Acute Trauma; Upper Extremity Trauma; Acute Upper Extremity Trauma; Avive
• Additional Relevant MeSH Terms: Wounds and Injuries
• Other Study ID Numbers: ASM-CP-001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No