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Stem cells for knee osteoarthritis: how far can an injection go?

Cartilage regeneration using your own adipose cells

Quick answer

Osteoarthritis is wear of the joint cartilage leading to inflammation, pain and restricted movement. The cell approach EHL Bio describes is harvesting the patient's own fat, expanding stem cells in the lab, then injecting selected high-quality cells into the affected joint to stimulate cartilage regeneration and reduce inflammation without joint replacement surgery. Results, though, depend heavily on how advanced the degeneration is.

Key facts

Best suited to
Grade 2-3 osteoarthritis
Cell source
Patient's own fat
Delivery
Intra-articular injection
Pre-assessment
Knee X-ray and MRI
Aftercare
Quadriceps-focused physiotherapy

Who benefits most from cell injections

The best candidates are usually early-to-moderate cases (Kellgren-Lawrence grade 2-3) with cartilage still present and limited malalignment. Where bone-on-bone contact exists, joint replacement remains the more predictable option.

SVF, cultured cells and combined surgery

Korea offers same-day SVF injection, cultured stem cell injection, and arthroscopic surgery combined with cartilage cell implantation. These differ in cost and evidence level, so an orthopaedic surgeon should decide based on your actual X-ray and MRI.

Recovery and rehabilitation after injection

After injection most patients limit heavy weight-bearing briefly and enter physiotherapy to strengthen the quadriceps — a factor in joint load tolerance that matters as much as the cells themselves.

What to ask the clinic before you pay

Questions to ask a clinic: SVF or cultured cells, what cell count, intra-articular or intravenous, and is follow-up done with MRI or a validated symptom score such as WOMAC.

Frequently asked questions

  • Does cartilage fully regrow?

    Generally not to its original state. Realistic goals are less pain, better function and delaying joint replacement.

  • How long do results last?

    Most reports describe improvement over 6-24 months, though outcomes vary widely by individual and severity.

  • Can both knees be treated at once?

    Often yes, but the cell dose must cover both and recovery planning matters since early mobility is harder.

  • Is it covered by insurance?

    Usually not, as it is classed as elective or investigational. Check your policy in advance.

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Last updated: 2026-08-28 · This content is for information only and is not medical advice. Consult a qualified doctor before making treatment decisions.

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