Can targeted hand exercises steady joints in habitual knuckle crackers?
NCT ID NCT07815717
First seen Sep 11, 2026 · Last updated Sep 11, 2026
Summary
Researchers are testing whether a 4-week hand and wrist stabilization exercise program can improve joint position sense, functional performance, and joint laxity in young adults aged 18 to 30 who habitually crack their knuckles. Participants are randomly assigned to either twice-weekly supervised exercises or no exercise. The trial measures changes in proprioception, joint laxity, upper extremity function, and pain over 4 weeks.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a 4-week supervised hand and wrist stabilization exercise program
- What this could lead to
- If the exercises help, they could offer a simple, non-invasive way for people who crack their knuckles to improve hand control and joint stability.
- What could go wrong
- This is a small, short trial of 42 people, so any changes may be minor or fade after the program ends. Exercise programs also depend on participants sticking with the sessions.
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 42 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Oct 2026
An estimate. Start dates often move.
- Expected to finish
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Mar 2027
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 30 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: * Age between 18 and 30 years, * Voluntary agreement to participate and signing the Informed Consent Form following detailed study briefing, * Willingness to attend all assessment and intervention sessions. Exclusion Criteria: * Having an occupation that requires intensive or repetitive use of the upper extremities and fingers, * History of prior musculoskeletal injury involving the upper extremity or hand, * Presence of physical or sensory impairments (such as visual or auditory deficits) that could interfere with study procedures, * History of congenital or acquired orthopedic, neurological, or rheumatological conditions affecting hand or wrist range of motion and function, * History of hand or wrist trauma requiring medical, conservative, or surgical management within the past 6 months, * Presence of active skin lesions in the intervention region, including burns, cellulitis, vesicles, bullae, psoriasis, open or closed wounds, scar tissue, active infection, or malignancy, * Body Mass Index (BMI) ≥30 or a history of morbid obesity.
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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
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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
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