Laser light may ease pain after knee replacement
NCT ID NCT07568262
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether adding high-intensity laser therapy to standard physical therapy helps reduce pain and improve movement after knee replacement surgery. About 46 adults aged 50 to 80 will be randomly assigned to receive either real laser therapy or a sham treatment alongside their rehab. Researchers will measure pain, swelling, strength, and quality of life over four months.
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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 46 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Sep 2028
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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50 to 80 years
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients undergoing primary unilateral total knee arthroplasty for primary knee osteoarthritis * Age between 50 and 80 years * Pain intensity greater than 30/100 on the Visual Analog Scale (VAS) * Ability and willingness to provide written informed consent Exclusion Criteria: * Psychiatric disorders * Cognitive impairments * Previous major trauma or surgery involving the affected knee * Rheumatic diseases or fibromyalgia * Vascular diseases * Neoplastic diseases * Infectious diseases * Neurological disorders * Hemophilia or bleeding disorders * Current anticoagulant therapy * Presence of a pacemaker * History of epileptic seizures * Known hypersensitivity or contraindication to laser therapy * Suspected conditions in which tissue heating is contraindicated * Use of photosensitizing medications or known photosensitivity * Skin lesions or abrasions at the treatment site * Tattoos in the treatment area * Intra-articular steroid injections in the target knee within the previous 2-3 weeks * Recent significant trauma or injury * Use of anti-inflammatory or analgesic medications or other pain-relieving treatments (if not controlled or standardized) * Pregnancy or breastfeeding * Positive status for human immunodeficiency virus
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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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IRCCS Istituto Ortopedico Rizzoli
Bologna, 40136, Italy
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Other studies related to the condition(s) this trial covers.
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