New knee surgery cut could curb Post-Op numbness
NCT ID NCT07514598
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether a J-shaped skin incision, instead of the usual straight cut, can reduce numbness and pain after total knee replacement. Sixty-two patients with severe knee arthritis were randomly assigned to get either the standard or the J-shaped incision. The researchers measured the numb area around the wound and pain levels up to 6 months after surgery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- J-shaped incision (surgical procedure)
- What this could lead to
- If successful, this simple change in surgical technique could reduce numbness and pain after knee replacement, improving patient comfort and satisfaction.
- What could go wrong
- This is a small, single-center trial with only 62 patients. The benefit may be small or not apply to all patients, and the curved incision could have other risks like slower healing.
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
-
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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62 people
The number who actually took part.
- Started
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Sep 2025
- Finished
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May 2026
- 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
-
56 to 81 years
- Sex
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Anyone
- Healthy volunteers
-
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: * Adults undergoing primary total knee arthroplasty * Diagnosis of Kellgren-Lawrence grade 4 varus knee osteoarthritis * Planned treatment with primary total knee arthroplasty * Ability to provide written informed consent * Ability to comply with postoperative follow-up evaluations Exclusion Criteria: * Valgus knee deformity * Revision total knee arthroplasty * Previous surgery on the affected knee * History of periarticular fracture around the knee * Pre-existing sensory deficit or neurologic disorder affecting the operative lower extremity * History of lumbar disc herniation * Known neuromuscular disease * Peripheral vascular disease * Inability to comply with follow-up and postoperative evaluations * Refusal or inability to provide informed consent
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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.
Contacts and locations
Locations
-
Fatih Sultan Mehmet Training and Research Hospital
Ataşehir, Istanbul, 34752, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.
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