Simulation method for funnel breast orthopaedic surgery

Abstract

The invention discloses a funnel chest orthopaedic surgery simulation method; chest three-dimension visualization bone models and costal cartilage models are respectively processed by face mesh division, and the mesh is optimized; a mesh conversion is used on the basis of mesh optimization, and a chest model is converted into a body mesh from a face mesh; rib, costal cartilage and breast bone are respectively material-evaluated, and skeleton body mesh model of each part is assembled so as to obtain a complete chest three-dimensional mechanical model; boundary conditions and loading force moment are determined, and the chest model is processed by finite element analysis so as to obtain the stress, strain and displacement conditions of each skeleton part under the action of different external forces; the incision position, support plate material, fixing method and supporting force moment of funnel chest surgery are simulated so that the success ratio of funnel chest surgery is increased to over 98% from 70-90% of the prior art.

Description

technical field [0001] The invention relates to an orthopedic surgery simulation method, in particular to a pectus pectus orthopedic simulation method. Background technique [0002] Funnel chest is a congenital thoracic deformity in which the sternum part is sunken inward, and the adjacent costal cartilage is also sunken with it, and the appearance is funnel. [0003] The well-known deformed sternum correction surgery is Nuss minimally invasive orthopedic surgery, and the objects are mostly children whose costal cartilage has not yet been calcified. Diagnose the degree of sternal depression of the child before operation, determine the pectus excavatum index, select a suitable support plate according to the doctor’s experience, bend it to a certain degree, and implant it into the patient’s body through minimally invasive surgery under thoracoscopic surgery. The cartilage lifts up. [0004] The Nuss operation has the following shortcomings: (1) The fixed position of the supp...

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Problems solved by technology

[0004] Nuss operation has the following disadvantages: (1) The fixed position of the support plate mainly depends on the doctor's clinical experience, and there is no scientific and accurate analysis system for auxiliary positioning, thus In some children, the support plate shifted due to the compression of the thorax after operation, causing damage to the heart and great vessels; The direction and magnitude of the force also vary widely

If only relying on the doctor's experience, it is easy to cause pressure on the viscera in the thoracic cavity and produce complications; (3) the success rate of the first operation is about 70-90%. burden

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