Digital design and manufacturing method for knee joint tibia prosthesis

Abstract

The invention relates to a digital design and manufacturing method for a knee joint tibia prosthesis. The method comprises the steps of (1) establishing a knee joint tibia three-dimensional digital model according to medical image data based on the knee joint tibia of healthy people; (2), performing digital simulation of tibia rear end osteotomy according to a knee joint arthroplasty surgery scheme and measuring the design-related geometric parameter of the tibia prosthesis; (3), obtaining the geometric shape parameters of the tibia prosthesises of different genders and models according to the statistical analysis, and drawing the tibia prosthesis design model; (4) manufacturing the knee joint tibia prosthesis according to the tibia prosthesis design model through a 3D (three-dimensional) printing technology. According to the digital design and manufacturing method for the knee joint tibia prosthesis, the tibia prosthesises of different genders and models can be obtained, the prosthesises can be matched with the anatomic form features of different knee joint tibia skeletons of male and female in China, and the coverage rate between the prosthesises and the osteotomy section of the knee joint tibia and the good rate of surgeries are improved.

Description

technical field [0001] The invention relates to a design and manufacturing method of an artificial knee joint prosthesis, in particular a digital design and manufacturing method of a knee tibial prosthesis used in total knee artificial joint replacement surgery. Background technique [0002] Knee osteoarthritis (KOA) is a chronic joint disease characterized by degeneration and destruction of articular cartilage and bone hyperplasia, and has become one of the most common causes of chronic disability in middle-aged and elderly people. Total knee arthroplasty is a very mature and extensive orthopedic surgery. It has become an effective method for the treatment of advanced knee osteoarthritis, which can reduce the pain of patients and improve the quality of life. [0003] Studies have shown that there are certain differences in the anatomical shape of the knee joints between people of different races and between men and women of the same race. At present, the vast majority of k...

AI Technical Summary

Problems solved by technology

At present, the vast majority of knee tibial prostheses used in the Chinese market come from European and American manufacturers or domestic manufacturers that imitate Europe and the United States. These prostheses are designed based on the knee anatomy of European and American populations, and match the knee anatomy of Asians. poor sex

In addition, these tibial prostheses did not take into account the differences in tibial anatomy between males and females. Men and women use tibial prostheses of the same shape, resulting in a tibial prosthesis that does not match the shape of the tibia, resulting in incomplete coverage or suspension of the prosthesis, which in turn leads to false positives. body wear, shortened service life, knee joint pain and swelling after joint replacement, and even the possibility of prosthesis revision

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