Synthetic Materials Used for Cartilage Regeneration in Recent Decade

Abstract

Cartilage injury is considered the major cause of joint pain, swelling and dysfunction. Due to the cartilage tissue’s limited repair capacity, it’s very urgent and crucial to develop and investigate biomaterials to improve effective cartilage regeneration. Over the past decade, researchers focused of the design and preparation of a variety of synthetic materials. There synthetic scaffolds are expected to provide a favorable cellular microenvironment which is beneficial for cartilage regeneration. This review comprehensively reviews the major synthetic materials that have been recently applied in cartilage regeneration engineering, including a variety of polymers and a number of 3D printed materials. These materials have unique physicochemical structures and properties that can provide biocompatible three-dimensional porous structures, mimic the extracellular matrix environment in vivo, and promotes cell adhesion, proliferation, and differentiation. These properties all guide the orderly regeneration of cartilage tissues. Especially through the composite with bioactive molecules, nanomaterials, etc., these materials can also realize the controlled release of biological signals and precisely regulate cell behavior. In addition, by compositing natural polymers with synthetic polymers gives the hybrid scaffolds good bioactivity, it will also enhance their mechanical properties as well as the scaffold elasticity. These techniques allow researchers to develop the most ideal scaffold that perfectly mimics the natural cartilage environment.