The right mix: can anesthetic make knee arthritis shots work better?
NCT ID NCT05906433
First seen Sep 23, 2026 · Last updated Sep 23, 2026
Summary
Researchers are testing whether adding a numbing anesthetic to corticosteroid knee injections improves pain relief for people with knee osteoarthritis. The trial compares injections with and without anesthetic, and also tests different amounts of anesthetic. About 75 adults with mild to moderate knee arthritis will receive a single injection and report their pain levels over time. The goal is to learn which mixture eases pain best and how long relief lasts.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Kenalog (a corticosteroid) mixed with bupivacaine, a numbing anesthetic
- What this could lead to
- If one mix works better, doctors could tailor knee arthritis injections to give faster and longer pain relief.
- What could go wrong
- This is a small early-phase study, so results may not hold for all patients. Injections can cause temporary soreness, and steroid shots carry small risks of joint irritation or infection.
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
-
Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
-
75 people
The number who actually took part.
- Started
-
Jun 2023
- Finished
-
Dec 2025
- Lead sponsor
-
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
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
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. Patients must be 18 years of age and be able to consent for themselves. 2. OA grade Kellgren Lawrence Stage II or III. 3. Diagnosis of primary osteoarthritis. Exclusion Criteria: 1. Patients with other forms of arthritis such as inflammatory arthritis. 2. History of narcotic use for the past 6 months. 3. Kellgren Lawrence arthritis grade 1 or 4. 4. Pregnant women and prisoners.
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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
-
Florida Orthopaedic Institute
Tampa, Florida, 33637, United States
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