97-year-old orthopedic surgeon claims: This food can rebuild knee cartilage in just 24 hours!

Claims like “a food that rebuilds knee cartilage in 24 hours” are not supported by medical science. Cartilage—the smooth tissue that cushions joints—does not regenerate that quickly. Repairing or improving joint health usually takes weeks to months, and often requires a combination of nutrition, exercise, and medical care.

However, some foods may support cartilage health and reduce inflammation, which can help people with joint pain or conditions like Osteoarthritis.
Foods That Support Knee Cartilage Health
1. Bone Broth

Bone broth contains collagen, gelatin, and amino acids that may support joint tissues.

Potential benefits

Supports cartilage structure
Provides collagen building blocks
May reduce joint stiffness