China develops artificial joint cartilage with high durability

Cartilage is a flexible connective tissue that is responsible for keeping the ends of bones from wearing away, allowing the body to move more easily.

Articular cartilage Nature has demonstrated extraordinary bio-performance based on surface-lubricated biomolecules that give good mechanical resistance. However, natural articular cartilage can be damaged by age, disease or injury and needs replacement to maintain mobility.

At present, Hydrogel is considered as a potential alternative to natural cartilage due to its low surface friction and good biocompatibility. However, Hydrogel does not have enough strength and mechanical strength, so its applicability is greatly reduced.

According to research results published in the journal ACS Applied Materials and Interfaces, researchers from the Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences have developed a two-layer lubricating compound, which provides resistance Good mechanical force and unique stress dissipation mechanism. The blend is inspired by the mechanical properties and surface lubrication of natural joint cushions. In the top lubricating layer, this blend shows outstanding friction-reducing function and resistance to wear during mechanical movement.

According to the scientists, this new material design idea is expected to be applied in the fields of bio-lubrication and soft robotics, focusing on technologies that closely resemble the physical characteristics of living organisms. .

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