Mechanical analysis of bone and its internal fixation

Abstract

Abstract Biomechanics can help people understand the work of the human body and organs, as well as the changes of various effects under the action of external loads, to carry out artificial control and prediction. Bone biomechanics is an important branch of biomechanics, and bone materials are divided into four hierarchical structures, starting from the lowest molecular level, to woven bones, lamellar bones, and Haversian bones, then a higher level of large woven bones and primary woven bones, Harversian bone system and laminar bones, at last to the macroscopic level compact bones and cancellous bones. The analysis of bone mechanical properties focuses on the elasticity modulus parameters, the elasticity modulus of dry bones is usually greater than that of wet bones, and the elasticity modulus of compact bones is usually greater than that of cancellous bones. As well as the stress relaxation and creep behavior of compact bone, the 8 microstructure parameters of cancellous bone. Combined with the mechanical analysis of fracture and internal fixation in clinical medicine, the connection method between the steel plate and the bone, the position of the steel plate relative to the bending direction, the selection of materials and other factors affect the mechanical properties, so that various factors need to be paid attention to in the analysis of surgery.