Carbon fiber for artificial bones and artificial joints

At present, carbon fiber composite materials have been widely used in bone internal fixation plates, bone fillers, hip joint stems, artificial tooth roots, skull repair materials, and artificial heart materials. The flexural strength of human bones is about 100Mpa, the flexural modulus is about 7~20Gpa, the tensile strength is about 150Mpa, and the tensile modulus is about 20Gpa. The flexural strength of carbon fiber composite materials is about 89Mpa, the flexural modulus is 27Gpa, the tensile strength is about 43Mpa, and the tensile modulus is about 24Gpa. In comparison, it is close to or exceeds the strength of human bones.

Carbon fiber composite materials are currently used to make artificial bones and joints. The bending strength of this artificial bone is closer to real human bones than artificial bones made of other biological materials, which is of great significance to orthopedic medicine. The wear resistance of artificial joints made from it at the movable joints is also higher than that of ultra-high molecular weight polyethylene and metal products.