Shock therapy for sore knees: electrostimulation tested after ACL surgery
NCT ID NCT06910150
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether a single 30-minute session of electrical stimulation (TENS or needle-based) applied to the quadriceps muscle can reduce pain and improve movement, strength, and quality of life in people who recently had ACL knee surgery. 45 participants will be split into three groups: one gets standard rehab alone, the other two get standard rehab plus one type of electrostimulation. Pain and function are measured before treatment, right after, and at 1 and 7 days later.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- electrostimulation (TENS and needle-based)
- What this could lead to
- If it works, this could provide a simple, drug-free way to ease pain and speed recovery after ACL surgery.
- What could go wrong
- This is a very small, early-stage trial with only 45 people. The effect may be small or temporary, and results may not apply to everyone.
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 45 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2025
- Expected to finish
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Feb 2026
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 to 55 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.
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: * Subjects aged between 18 and 55 years, regardless of gender. * Subjects who have undergone surgical ACL reconstruction within the past six weeks, with or without additional procedures on one or both menisci due to their high concomitance, and with or without Lemaire reinforcement in the form of extra-articular lateral tenodesis. * Subjects experiencing pain in the operated knee. * Voluntary signing of the informed consent form for the study. Exclusion Criteria: * Contraindications for invasive therapies: * Subjects with chronic joint pathology. * Subjects with prostheses or osteosynthesis in the affected lower limb. * Subjects with heart disease. * Subjects with neoplasms. * Subjects with coagulopathies. * Subjects with epilepsy. * Subjects with pacemakers. * Pregnant patients. * Subjects with belonephobia (severe fear of needles). * Subjects with neuropathic pain. * Subjects with central nervous system disorders. * Subjects with a history of neurological disorders. * Subjects with a history of lumbar hernia or protrusion due to a possible involvement of the lumbar plexus. * Subjects with a history of spinal surgery. * Subjects presenting any bilateral symptoms. * Subjects with a BMI greater than 30 kg/m². * Subjects taking analgesic medication. * Subjects receiving any alternative treatment not proposed in this study, which could alter the results. * Subjects scoring above 37.5 points on the "Personal Psychological Apprehension Scale in Physiotherapy". * Contraindications for dynamometric measurement: * Subjects with acute quadriceps muscle injury. * Subjects with joint instability. * Subjects with acute joint inflammation. * Subjects who voluntarily withdraw from the study. * Subjects absent for any measurement session.
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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
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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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Clínica CEMTRO
Madrid, Madrid, 28035, Spain
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Zapping the brain to rebuild leg muscle after ACL tears
- Knee surgery showdown: does an extra ligament fix improve ACL recovery?
- Shock therapy for knees: new study tests nerve zaps for ACL recovery
- New rehab combo may speed knee recovery after ACL surgery
- Knee surgery recovery: does graft type matter for muscle strength?