U.K. Researchers Develop Coral-Inspired Bone Graft Material

Swansea University scientists have developed a bone graft substitute inspired by coral that not only promotes faster healing but dissolves naturally in the body after the repair is complete.

Led by Dr Zhidao Xia from Swansea University Medical School in collaboration with colleagues from the Faculty of Science and Engineering and several external multi-national partners,* the research has been patented and published in the journal Bioactive Materials.

Bone defects caused by fractures, tumors, and non-healing injuries are one of the leading causes of disability worldwide. Traditionally, doctors use either a patient’s own bone (autograft) or donor bone (allograft) to fill these gaps but these methods are chock full of challenges, including a limited supply, the risk of infection, and ethical concerns.

Using advanced 3D-printing technology, the Swansea University team developed a biomimetic material that mimics the porous structure and chemical composition of coral-converted bone graft substitute, blending perfectly with human bone and offering several incredible benefits:

• Rapid healing: It helps new bone grow within two to four weeks.
• Complete integration: The material naturally degrades within six to 12 months after enhanced regeneration, leaving behind only healthy bone.
• Cost-effective: Unlike natural coral or donor bone, the material is easy to produce in large quantities.

In preclinical in vivo studies, the material fully repaired bone defects within three to six months and triggered the formation of a new layer of strong, healthy cortical bone in four weeks.

Most currently marketed synthetic bone graft substitutes cannot match the performance of natural bone, as they either take too long to dissolve, fail to integrate well, or cause side effects like inflammation. This new material overcomes these problems by closely mimicking natural bone in both structure and biological behavior.

“Our invention bridges the gap between synthetic substitutes and donor bone,” Dr. Xia explained. “We’ve shown that it’s possible to create a material that is safe, effective, and scalable to meet global demand. This could end the reliance on donor bone and tackle the ethical and supply issues in bone grafting.”

The Swansea University team is currently hoping to partner with companies and healthcare organizations to market the material.

* The study was conducted by Swansea University, U.K.; Huazhong University of Science and Technology, China; Xiangyang Central Hospital, China; Johns Hopkins University School of Medicine, U.S.; Oxford Instruments NanoAnalysis, U.K.; McGill University, Canada; The Open University, U.K.; the University of Rochester, U.S.; the University of Oxford, U.K., and the University of Sheffield, U.K.