Phase 2
N=200
Sustained Acoustic Medicine (SAM) for Symptomatic Treatment of Knee Pain Related to Osteoarthritis
Osteo Arthritis Knee · Arthritis
Bottom Line
View on ClinicalTrials.gov: NCT05882812 ↗Enrolled (actual)
200
Serious AEs
0.0%
Results posted
May 2025
Primary outcome: Primary: Change in Pain Units on a Scale (0-10) 0 Being Least, 10 Being Worst Pain (Value at 8 Weeks Minus Value at Baseline). — -3.7; -3.02; -1.61 units on a scale
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 2
- Interventions
- Sustained Acoustic Device with 2.5% Diclofenac Patch (Device); Sustained Acoustic Device with 0% Diclofenac Patch (Device); 2.5% Diclofenac Patches (Drug)
- Age
- Adult, Older Adult · 35+ yrs
- Sex
- All
- Sponsor
- ZetrOZ, Inc.
- Primary completion
- Dec 2023
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Change in Pain Units on a Scale (0-10) 0 Being Least, 10 Being Worst Pain (Value at 8 Weeks Minus Value at Baseline). |
-3.7; -3.02; -1.61 | — |
| PRIMARY Change in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) (Value at 8 Weeks Minus Value at Baseline) |
-23.42; -23.02; -14.55 | — |
Summary
The purpose of this study is to assess the ability of long-duration low-intensity therapeutic ultrasound (LITUS) to alleviate knee Osteoarthritis pain over an 8-week period. The primary objective of this study is to evaluate the analgesic effect of LITUS in subjects suffering from knee Osteoarthritis pain. Secondary objectives are to assess the ability of LITUS to improve joint function.
Eligibility Criteria
Inclusion Criteria
- Have physician-diagnosed mild to moderate knee OA (OARSI atlas grades 1-2)
- Fulfill the American College of Rheumatology clinical and radiological diagnostic criteria for knee OA
- Are between 35-80 years of age
- Report a frequent pain score between 3-7 (range: 0-10) during the week preceding enrollment
- Report that knee pain negatively affects quality of life
- Are willing not to use any cream, gel, or topical solution during the administration of treatment other than the approved treatment provided to the subject at the initiation of the study
- Are deemed appropriate by their physician or by the study site physician to participate.
- Be 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 use or initiate opioid and/or non-opioid analgesic medications.
- Be willing to discontinue any other interventional treatment modalities on the knee during the study period (e.g., transcutaneous electrical nerve stimulation, electronic muscle stimulation, traditional ultrasound).
Exclusion Criteria
- Cannot successfully demonstrate the ability to put on and take off the device.
- Displays 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.
- Participated in a clinical trial for an investigational drug and/or agent within 30 days prior to screening.
- Is pregnant.
- Is a prisoner.
- Is non-ambulatory (unable to walk).
- 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 a known neuropathy (disease of the brain or spinal nerves).
- Has a hereditary disposition (tendency) for excessive bleeding (hemorrhage).
- Have knee replacement, other surgical intervention, or hyaluronidase injection in the affected knee in the past 6 months
- Are currently taking steroids
- Have a secondary cause of arthritis (metabolic or inflammatory)
Data sourced from ClinicalTrials.gov (NCT05882812). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.