Why painful bone spurs form in the jaw joint (TMJ osteophytes)
Pathogenic mechanisms of TMJ osteophyte formation
['FUNDING_R21'] · CHILDREN'S HOSP OF PHILADELPHIA · NIH-11140468
This research looks at biological reasons why bone spurs form in the jaw joint in adults with TMJ osteoarthritis.
Quick facts
| Phase | ['FUNDING_R21'] |
|---|---|
| Study type | Nih_funding |
| Sex | All |
| Sponsor | CHILDREN'S HOSP OF PHILADELPHIA (nih funded) |
| Locations | 1 site (PHILADELPHIA, UNITED STATES) |
| Trial ID | NIH-11140468 on ClinicalTrials.gov |
What this research studies
Researchers are trying to understand why osteophytes (bony spurs) develop in the temporomandibular joint by studying genetic and molecular changes that control cartilage and bone growth. They use mouse models that carry PRG4 gene mutations which reproduce key features seen in some TMJ patients and examine tissue changes before and during osteophyte formation. The team measures molecules such as the heparan sulfate-synthesizing gene EXT1 and other signals that promote or block cartilage growth to map the steps leading to spurs. By revealing these pathways, the lab hopes to point to new targets that could be used to prevent or treat TMJ osteophytes and reduce pain and jaw dysfunction.
Who could benefit from this research
Good fit: Adults (age 21+) with TMJ osteoarthritis, jaw joint pain, radiographic osteophytes, or known PRG4-related genetic changes would be most relevant to this work.
Not a fit: People whose jaw pain is due to trauma, primarily muscle-only TMJ disorders, or children under 21 are less likely to receive direct benefit from these findings.
Why it matters
Potential benefit: If successful, this work could identify biological targets for therapies that prevent or reduce TMJ bone spurs, lowering pain and improving jaw movement.
How similar studies have performed: Early laboratory work, including Prg4-mutant mouse models, has shown similar TMJ changes and supports the biological links being explored, though translating these findings into human treatments is still new.
Where this research is happening
PHILADELPHIA, UNITED STATES
- CHILDREN'S HOSP OF PHILADELPHIA — PHILADELPHIA, UNITED STATES (ACTIVE)
Researchers
- Principal investigator: KOYAMA, EIKI — CHILDREN'S HOSP OF PHILADELPHIA
- Study coordinator: KOYAMA, EIKI
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.