Comparative Usability Evaluation of Sustained Acoustic Medicine (SAM) Devices and Topical Gel for OA Knee Pain

April 30, 2025 updated by: ZetrOZ, Inc.

Comparative Usability Evaluation of Sustained Acoustic Medicine (SAM) Devices and Topical Gel for Knee Pain Related to Osteoarthritis

The purpose of this study is to evaluate the usability of the ultrasound devices and common pain relief gel. The ability of the three treatment approaches to reduce pain, stiffness, and functionality as measured by NRS scale and the Western Ontario and McMaster Universities Arthritis Index (WOMAC) will be evaluated.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Connecticut
      • Stamford, Connecticut, United States, 06905
        • Orthopaedic Foundation
      • Trumbull, Connecticut, United States, 06611
        • ZetrOZ Systems
    • New York
      • Dryden, New York, United States, 13053
        • Cayuga Medical Center - Medical Pain Consultants

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

35 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Physician-diagnosed mild to moderate knee osteoarthritis (KL Grade 2-3) based on fixed-flexion x-ray radiological findings for osteophytes and joint space narrowing within the past 12 months
  • Fulfill the American College of Rheumatology clinical and radiological diagnostic criteria for knee OA
  • 35-80 years of age
  • Report a frequent pain score between 4-7 (NRS range: 0-10) during the week preceding enrollment
  • Report that knee pain negatively affects quality of life
  • Willing not to use any cream, gel, or topical solution during the administration of treatment other than the approved ultrasound gel provided to the subject at the initiation of the study
  • Deemed appropriate by their physician or by the study site physician to participate
  • Willing and able to self-administer treatment daily within their place of residence or during normal daily activity, excluding bathing, showering, or other water activities which may result in submersion of the study device
  • Not initiate use of opioid and/or non-opioid analgesic medications
  • Willing to discontinue any other interventional treatment modalities on the knee during the study period

Exclusion Criteria:

  • Cannot successfully demonstrate the ability to put on and take off the device
  • Display any condition which, in the judgment of the investigator, would make participation in the study unacceptable, including, but not limited to, the subject's ability to understand and follow instructions
  • Have severe OA or have little to no cartilage in the knee
  • Have knee replacement, other surgical intervention, or hyaluronidase injection in the affected knee in the past 6 months
  • Is non-ambulatory (unable to walk)
  • Is pregnant
  • Is a prisoner
  • Has a pacemaker
  • Has a malignancy in the treatment area
  • Has an active infection, open sores, or wounds in the treatment area
  • Has impaired sensation in the treatment area, such as caused by chemotherapy or anesthesia
  • Has known neuropathy
  • Has a hereditary disposition (tendency) for excessive bleeding (hemorrhage)
  • Participated in a clinical trial for an investigational drug and/or agent within 30 days prior to screening
  • Modify their medications during the course of the study (medications and doses must remain constant throughout the study)
  • Currently taking steroids
  • Have contraindication to radiograph
  • Have a secondary cause of arthritis (metabolic or inflammatory)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: SAM Ultrasound Device and Diclofenac Patch
Patients receive treatment from the wired SAM Ultrasonic Diathermy Device for 4 hours at least 5 days a week for 8 weeks combined with 2.5% diclofenac patch. The SAM device emits continuous ultrasound at 3 megahertz (MHz) frequency and 0.132 watts/cm2 intensity.
Device: Sustained Acoustic Device with 2.5% Diclofenac Patch
Patients apply the SAM Ultrasonic Diathermy Device daily for 1-4 hours of continuous therapeutic ultrasound at 3 megahertz(MHz) frequency and 0.132 Watts/cm@ with 2.5% Diclofenac patches.
Other Names:
  • ZetrOZ Ultrasound Device
  • Wearable Ultrasound Device
  • Long Duration Ultrasound
  • Long Duration Low-Intensity Device
  • LITUS Device
Experimental: SAM2 Ultrasound Device and Diclofenac Patch
Patients receive treatment from the wireless SAM Ultrasonic Diathermy Device for 1 hour at least 5 days a week for 8 weeks combined with 2.5% diclofenac patch. The SAM device emits continuous ultrasound at 3 megahertz (MHz) frequency and 0.132 watts/cm2 intensity.
Device: Sustained Acoustic Device with 2.5% Diclofenac Patch
Patients apply the SAM Ultrasonic Diathermy Device daily for 1-4 hours of continuous therapeutic ultrasound at 3 megahertz(MHz) frequency and 0.132 Watts/cm@ with 2.5% Diclofenac patches.
Other Names:
  • ZetrOZ Ultrasound Device
  • Wearable Ultrasound Device
  • Long Duration Ultrasound
  • Long Duration Low-Intensity Device
  • LITUS Device
Placebo Comparator: Topical Pain-Relief Gel
Patients apply topical 1% diclofenac gel three times per day, at least 5 days per week for 8 weeks.
Drug: 1% Diclofenac Topical Gel
Topical pain-relief gel
Other Names:
  • Voltaren

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change in Pain Units on a Scale (0-10) 0 Being Least, 10 Being Worst Pain From Baseline
Time Frame: 8 weeks
Change in the self described pain units on a scale by patient at baseline and post-treatment on the range of 0 - 10, 0 being the least pain and 10 being the worst pain.
8 weeks
Change in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) From Baseline
Time Frame: 8 weeks
WOMAC questionnaire will be utilized (Western Ontario and McMaster Universities Arthritis Index) at baseline and post-treatment to calculate the change in scores. Total score is the sum of pain, stiffness, and function scores (range of 0 - 96). A higher score is considered a worse outcome, and a lower score is considered a better outcome.
8 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
ZetrOZ, Inc.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: George K Lewis, Ph.D., ZetrOZ Systems

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 9, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 9, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 20, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 2, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 30, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • HF-01-2021

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

Yes

Studies a U.S. FDA-regulated device product

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Knee Osteoarthritis

Clinical Trials on Sustained Acoustic Device with 2.5% Diclofenac Patch

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings