Manufacturing method for posterior column lag screw 3D navigation module used for acetabulum fracture

Abstract

A manufacturing method for a posterior column lag screw 3D navigation module used for acetabulum fracture comprises the following steps that A, according to simulation reestablishing, 3D reestablishing is performed according to pelvis thin layer CT scanning data of an object with the acetabulum fracture so as to obtain an original 3D reestablished model, on the basis of the original 3D reestablished model, fracture block division is performed along the fracture line, and the femur head is removed so as to obtain a fracture block separation model, and on the basis of the fracture model, a single fracture block 3D space position is adjusted to recover the normal anatomic form of the acetabulum, so that a fracture reduction model is obtained; B, according to virtual posterior column slag screw implanting simulation, on the basis of the fracture reduction model, a posterior column slag screw implanting fracture reduction model is simulated with a cylinder on the fracture reduction model; C, according to obtaining of a navigation module simulation body, the navigation module simulation body is established according to the cylinder, so that the navigation module simulation body with screw channels is obtained; D, the navigation module is obtained through 3D printing. The manufactured navigation module has the advantages that the manufacturing technology is simple, precision is high, and safety is good.

Description

technical field [0001] The invention relates to the technical field of fracture reduction, in particular to a method for preparing a posterior column lag screw 3D navigation module for acetabular fractures. Background technique [0002] Internal fixation is the technique of maintaining fracture alignment and stability with metal or biomaterials after fracture reduction through orthopedic surgery. For patients with larger fracture fragments, screw fixation is often used, and small fracture fragments can only be fixed with Kirschner wires. Usually, a hole is first drilled in the center of the fracture fragment, and then at a certain angle to the longitudinal axis of the bone, the hole is drilled obliquely to the opposite side and screws (or Kirschner wires) are screwed in to promote healing. [0003] With the development of computer technology and imaging technology, navigation technology has become a very important application method in orthopedic surgery. Navigation technol...

AI Technical Summary

Problems solved by technology

However, because the navigation template itself is fixed, it does not match the specific fracture patient, resulting in frequent mismatches during the operation, which reduces the navigation accuracy.

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