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HFIT Versus TENS Study for Chronic Low Back and Knee Pain

A Randomized Controlled Clinical Trial Evaluating the Effectiveness of High-frequency Impulse Therapy (HFIT) Versus Transcutaneous Electronic Nerve Stimulator (TENS) for Treatment of Chronic Low Back and Knee Pain

Status
Active, not recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05821530
Enrollment
325
Registered
2023-04-20
Start date
2023-04-24
Completion date
2023-06-30
Last updated
2023-06-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Back Pain, Low, Chronic Pain, Knee Pain Chronic

Keywords

musculoskeletal, chronic, pain, knee pain, back pain

Brief summary

A high-frequency impulse therapy (HFIT) device (Enso, San Francisco, CA) is a portable device for the treatment of musculoskeletal pain. This three-arm randomized controlled trial study compares a HFIT group to a standard transcutaneous electrical nerve stimulator (TENS) group and a control group.

Interventions

DEVICEHFIT

At least 1 hour daily for 4 weeks

DEVICETENS

At least 1 hour daily for 4 weeks

OTHERControl

Users will continue to use the digital MSK program as needed

Sponsors

Hinge Health, Inc
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 64 Years
Healthy volunteers
No

Inclusion criteria

* Age 18 or over and under age 65 * Baseline pain is 40 or more out of 100 on a NPRS * Member of digital MSK program's chronic back or knee pain program, after January 1, 2023 * Member engaged in the most recent 3 weeks * Experiencing chronic pain for at least 3 months * Subject able to understand and provide informed consent * Has an email account

Exclusion criteria

* Diagnosis of cancer/malignant tumors in the last 5 years * Back or knee surgery in the last 6 months * Has a cardiac pacemaker, implanted defibrillator, spinal cord stimulator, pain pump, insulin pump, or any other implanted electronic device * Patients with history of opioid, alcohol, or drug abuse in the last 1 year * Cognitive, behavioral, neurologic, or psychiatric disorder (e.g., dementia, Parkinson's, schizophrenia, stroke) that may interfere with the study or prevent the subject from complying with the requirements of the protocol * Pregnant or plan on becoming pregnant in the next year * Have epilepsy * Have cardiovascular disease * Current pain (in the past 24 hours) is less than 40 out of 100 on a NPRS

Design outcomes

Primary

MeasureTime frameDescription
Pain MCIDBaseline and Week 4Pain will be measured by the Numeric Pain Rating Scale, ranging from 0 (no pain) to 100 (worst possible pain). The minimal clinically important difference (MCID) of pain will be achieved (0/1) if there is at least a 34% or 23 point improvement, as based on literature.

Secondary

MeasureTime frameDescription
Function MCID (Back)Baseline and Week 4Back function will be measured by the Roland-Morris Disability Questionnaire 11-item (RMDQ-11, 0-100, higher indicates worse function) scores for back users. Function MCID will be achieved (0/1) if there is at least a 30% improvement in RMDQ-11, as based on literature.
Function MCID (Knee)Baseline and Week 4Knee function will be measured by the Knee Injury and Osteoarthritis Outcome Score - Physical Short Form (KOOS-PS, 0-100, higher indicates worse function). Function MCID will be achieved (0/1) if there is at least an 8 point improvement in KOOS-PS, as based on literature.
AnxietyBaseline and Week 4Anxiety will be assessed by the Generalized Anxiety Disorder 2-item (GAD-2, 0-6, higher is worse) scores. A score of 3 or higher is defined as screening in for having anxiety, based on literature. The percentage of users who screen in for anxiety in each group will be compared.
DepressionBaseline and Week 4Depression will be assessed by the Patient Health Questionnaire 2-item (PHQ-2, 0-6, higher is worse) scores. A score of 3 or higher is defined as screening in for having depression, based on literature. The percentage of users who screen in for depression in each group will be compared.
Opioid useBaseline and Week 4Opioid use data will be collected through survey questions. The percentage of users who use opioids in each group during the study will be compared.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026