05/30/2026
A new study from King’s College London suggests an unexpected everyday material — wool — could one day help repair broken bones.
Researchers extracted a structural protein called keratin from wool and turned it into thin membranes that act like a scaffold for bone regeneration. When tested in animal models, the keratin helped guide new bone growth in damaged areas, supporting healing in a way that closely resembled natural bone structure.
In comparison to collagen (the current standard material used in bone repair), the wool-derived keratin performed differently. While collagen produced more overall bone growth, keratin appeared to produce more organized, stable, and structurally aligned bone tissue — a key factor for long-term strength and durability.
The findings suggest keratin could become a promising alternative in regenerative medicine and dental or orthopedic procedures, especially because it is naturally abundant and derived from waste products in the wool industry.
Researchers are especially interested in its potential as a sustainable biomaterial, since wool is renewable and widely available, unlike more complex or expensive biological scaffolds.
Like other early-stage regenerative advances involving Regenerative medicine, this work has so far only been tested in lab and animal models. Human trials will be needed to determine safety, effectiveness, and how well the material performs under real-world conditions.
Still, the study adds to a growing trend in medicine: finding high-performance medical materials in unexpected natural sources — from proteins in bacteria to now, even wool.
Wool-derived keratin membranes helped regenerate organized, stable bone tissue and may offer a promising alternative to collagen in regenerative medicine.
