By Dr. Jeffrey Peng, MD · Published April 3, 2026 · 8 min read Watch the Full Video There is now MRI evidence that platelet-rich plasma (PRP) injections can help facilitate the regrowth of knee cartilage. A 42-year-old physically active male developed a progressive osteochondral defect after snowboarding. He tried rehabilitation, corticosteroid injections, and even standard PRP — none of which resolved his condition. His orthopedic surgeon recommended arthroscopic surgery.

Written by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician Published: March 4, 2026 | Last Updated: March 4, 2026 Knee cartilage lesions — including chondromalacia and osteochondral defects — have long been considered irreversible. Once cartilage wears down or detaches, the conventional wisdom has been that it simply cannot regenerate on its own. However, emerging evidence suggests that platelet-rich plasma (PRP) injections may not only reduce pain and impr