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Knee injection pain: does needle size or a chill spray help?

NCT ID NCT06865170

Symptom relief Sponsor: University of California, Davis Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 17, 2026 · Updated 4 times

Summary

This study looks at ways to reduce pain during knee steroid injections for osteoarthritis. Researchers will test if using a thinner needle or a numbing spray (ethyl chloride) makes the injection hurt less. 88 adults with knee osteoarthritis will rate their pain right after the shot, a day later, and after 6 weeks. The goal is to find simple ways to make this common procedure more comfortable.

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 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 88 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Dec 2026

An estimate. Start dates often move.

Expected to finish

Dec 2026

An estimate. End dates often move.

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

40 to 89 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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. age ≥ 40 years 2. fulfillment of the American College of Rheumatology criteria for knee OA 3. confirmation of knee-related pain and/or functional loss by clinical examination. 4. Patients with either 1. bilateral knee OA/injections, or 2. unilateral knee OA/injections. 5. Agreed to an intra-articular knee joint injection with steroids 6. Naive to use of ethyl chloride Exclusion Criteria: 1. Arthroscopy of the index knee(s) within the prior 6 months 2. Steroid injection of the knee(s) within the prior 3 months 3. Hyaluronic acid or platelet-rich plasma injection of the knee within the prior 6 months 4. Patient reported prior injection of any type with ethyl chloride spray 5. Knee effusion requiring aspiration at the time of the procedure 6. Cognitively impaired individuals

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Conditions

The condition(s) this trial relates to.

Iatrophobia osteoarthritis osteoarthritis, knee

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Fear of needles Osteoarthritis (OA) of the knee

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • UC Davis Sports Medicine Clinic

    Sacramento, California, 95817, United States

More trials for these conditions

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