Magnetic therapy may ease Post-Surgery pain, study hopes
NCT ID NCT04109638
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is testing whether a device that sends gentle magnetic pulses (PEMF therapy) can help reduce pain after shoulder or knee surgery. About 76 adults having these surgeries will use the device or a fake one for 10 days after their operation. Researchers will measure pain levels and how much pain medication participants need.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 76 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2021
- Expected to finish
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Feb 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Subjects may be male or female greater or equal to 18 years of age (≥ 18) at the time of consent. 2. Subjects who will be having shoulder or knee surgery are permitted. 3. Subject must not have used NSAIDs for one (1) week prior to surgery. a. a. Low-dose aspirin (81 mg) is permitted. 4. Subject must be willing and able to participate in post-operative physical therapy exercises. 5. Subject must understand and be willing to sign the IRB-approved Informed Consent Document. Exclusion Criteria: 1. Subject has a known collagen disorder such as, but not limited to, osteogenesis imperfecta (OI) or Ehlers-Danlos syndrome (EDS). 2. Subject has a known inflammatory or autoimmune connective tissue disease such as, but not limited to, gout affecting the shoulder, scleroderma, SLE, rheumatoid disease, or calcific tendonitis of the shoulder. 3. Subject has a metabolic bone disease such as Paget's disease or osteomalacia as documented in the medical record. 4. Subject has a deltoid defect, deltoid palsy or any other pseudoparalysis. 5. Subject is diabetic. 6. Subject has HIV or hepatitis. 7. Subject has a diagnosis of fibromyalgia or other chronic pain syndrome. 8. Subject has shoulder or knee pain of unknown etiology. 9. Subject has had an active malignancy in the past 5 years OR has an active or on-going neoplastic disease, except for benign skin cancer(s). 10. Subject has undergone administration, within 30 days prior to surgery, of any type of corticosteroid (with the exception of asthma medications and ophthalmic medications), antineoplastic, immunostimulation or immunosuppressive agent. 11. Subject is septic, or has a local or systemic infection. 12. Subject has an admitted active substance abuse problem which includes recreational drugs and/or narcotics or a history of substance abuse where history is defined as "not under the care of a physician" for more than 5 years. a. Prescriptive medical marijuana is not permitted, including CBD oils. 13. Subject consumes more than 14 (men) or 7 (women) standard drinks (alcoholic units) per week where a drink equals a 12 oz. beer, or a 5 oz. glass of wine, or a 1.5 oz. shot of liquor. 14. Subject is currently seeking or receiving worker's compensation for this injury or for an injury that has occurred more than 12 months prior to enrollment in this study or subjects who are currently in litigation or who have a history of litigation related to musculoskeletal diagnoses. 15. Subject has major mental illnesses including major depression, bipolar disorder, schizophrenia or dementia that would prevent them from following the protocol and/or independently completing the patient reported outcomes measures. 16. Subjects who have coexistent cervical spinal pathologies such as radiculopathies or myelopathies. 17. Subject has a mental or physical condition that would prevent them from complying with the study protocol.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Stanford University
RECRUITINGRedwood City, California, 94063, United States
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Other studies related to the condition(s) this trial covers.
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