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Stem cells could mend broken bones that Won't heal

NCT ID NCT07066228

Disease control Sponsor: The First Affiliated Hospital of Xinxiang Medical College Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study tests a new way to repair large bone gaps in arms or legs that are not healing properly. Doctors will take a small sample of the patient's own bone marrow, grow the stem cells in a lab, and combine them with a special scaffold to create living bone tissue. This tissue-engineered bone is then placed into the defect during surgery. The goal is to see if this approach helps bones heal faster and more completely than standard treatments. The study involves 30 adults aged 18 to 55 with bone defects of 2-3 cm or bone cysts affecting more than half the bone's width.

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

About 30 people

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

Started

Aug 2025

Expected to finish

Dec 2028

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

18 to 55 years

Sex

Anyone

Healthy volunteers

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

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: 18-55 years old, gender unrestricted; 2. Defective nonunion with bone loss exceeding 30% of the bone cross-section and a length of 2-3 cm; 3. Solitary bone cysts involving more than 50% of the bone cross-section. Exclusion Criteria: 1. Combined with local tumors, tuberculosis, infections or other bone-healing affecting lesions; 2. Systemic diseases affecting bone healing such as osteofibrous dysplasia, osteogenesis imperfecta, bone dystrophic diseases, and metabolic bone disorders; 3. Moderate-to-severe osteoporosis (BMD: T-score \< -2.5); 4. Severe systemic conditions including systemic malnutrition, systemic infectious diseases, severe cardiopulmonary diseases, coagulation disorders, and major organ failure; 5. Complicated with severe brain trauma; 6. Heavy smoking, drug abuse, alcoholism, or other harmful addictions; 7. Psychiatric disorders or patients with menopausal symptoms; 8. Concurrent participation in other studies or recent completion (within 4 weeks) of other clinical trials; 9. Pregnancy, lactation, or planned pregnancy within one year after initial enrollment; 10. Psychological conditions impairing treatment compliance; 11. Congenital malformations of vital organs or other systems; 12. Nonunion caused by malignant tumor resection; 13. Refusal to accept tissue-engineered bone repair protocol.

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Conditions

The condition(s) this trial relates to.

solitary bone cyst

As listed by the trial registrant

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

Bone cysts Bone defect Bone nonunion Defective composite restorations

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

  • The First Affiliated Hospital of Xinxiang Medical College

    RECRUITING

    Xinxiang, Henan, 453000, China

More trials for these conditions

Other studies related to the condition(s) this trial covers.