Cartilage Defects
Cartilage defects are localized areas of damage to the articular cartilage—the smooth, white tissue covering the ends of bones in joints. Unlike general arthritis which involves widespread cartilage loss, focal defects are discrete areas of damage often resulting from injury. Cartilage has limited ability to heal on its own due to poor blood supply.
Prevalence
Cartilage defects are found in 60-66% of knee arthroscopies. Symptomatic focal defects requiring treatment affect an estimated 900,000 Americans annually.
Who It Affects
Common in active individuals and athletes with knee injuries. Also associated with osteochondritis dissecans (OCD) in adolescents and young adults. Risk factors include previous joint trauma, ligament injuries, malalignment, and obesity.
Important: This information is for educational purposes only and does not constitute medical advice. Regenerative therapies are investigational and not FDA-approved to treat this condition.
Common Symptoms
Common Causes & Risk Factors
Traditional Treatment Options
Activity Modification & Physical Therapy
Reducing stress on the joint and strengthening supporting muscles.
Limitations: Does not repair defect. Helps manage symptoms but cartilage damage persists.
Microfracture Surgery
Creating tiny holes in bone to stimulate fibrocartilage growth.
Limitations: Produces fibrocartilage (inferior to native cartilage). Results often deteriorate over time.
Osteochondral Autograft/Allograft
Transplanting cartilage plugs from another area or donor.
Limitations: Limited donor sites. Allografts have availability and incorporation concerns. Technically demanding.
Autologous Chondrocyte Implantation (ACI)
Growing patient's own cartilage cells and implanting them.
Limitations: Requires two surgeries. Expensive. Long recovery. Best for younger patients.
Regenerative Medicine Approach
How Regenerative Therapy May Help
Regenerative medicine for cartilage defects explores whether biologics may support cartilage repair and regeneration. Research is investigating the potential of stem cells and exosomes to deliver regenerative signals that may enhance the body's ability to repair focal cartilage damage.
Potential Benefits Being Studied:
- Contains growth factors associated with cartilage biology
- May support native cartilage cell activity
- Being studied to enhance cartilage repair processes
- Can be combined with surgical procedures
- Minimally invasive when used alone
- May help address defects before widespread arthritis develops
Biologics Used:
Mesenchymal stem cells with chondrogenic potential
Exosomes containing cartilage-supportive growth factors
Frequently Asked Questions
Can stem cells regrow cartilage?
This is an active area of research. While there is laboratory evidence of cartilage regeneration, clinical results in humans vary. Regenerative therapies are not yet proven to reliably regrow cartilage in focal defects.
Is this better than microfracture?
Both approaches are being studied. Some research suggests regenerative therapies may be used alone or in combination with surgical techniques, but direct comparison studies are limited. The best approach depends on defect size, location, and patient factors.
What size defects can be treated?
Smaller defects generally have better outcomes with any treatment. Large defects may require surgical approaches. Your provider will evaluate your specific defect to determine appropriate options.
Ready to Explore Your Options?
Schedule a free consultation to discuss cartilage defects and learn if regenerative medicine may be right for you.
Important Disclaimer
Regenerative therapies for cartilage defects are investigational and not FDA-approved. Results vary. Consult with an orthopedic surgeon specializing in cartilage restoration for comprehensive evaluation.