Preparation method of 3D printing combined guide plate suitable for femoral neck system

Abstract

The invention relates to a preparation method of a 3D printing combined guide plate suitable for a femoral neck system.The preparation method is composed of a fracture three-dimensional CT data collection part and a guide plate design part, and the guide plate design part is composed of a central guide needle guide hole design, an anti-rotation guide needle guide hole design, a lesser trochanter positioning and fixing guide hole design and a detachable fixing base design; according to the invention, the accuracy of screw placement can be effectively improved, the safety of screw placement is improved, the operation time is shortened, and the exposure times and time of patients and medical personnel under X-rays are reduced.

Description

technical field [0001] The invention relates to a method for preparing a 3D printing combined guide plate, in particular to a method for preparing a 3D printed combined guide plate suitable for a femoral neck system. Background technique [0002] Femoral neck fractures are common in elderly patients, accounting for 3.6% of all fractures. With the rapid development of transportation, high-energy injuries lead to an increase in the incidence of femoral neck fractures in young people. Complications such as poor mobility of the hip joint, avascular necrosis of the femoral head, and fracture nonunion are still difficulties in current treatment. Internal fixation includes hollow nails, dynamic hip screws, locking plates, and intramedullary nails. However, it has been reported in the literature that the failure rate after internal fixation is as high as 37%. Fixation with three hollow screws is the "gold standard" for the treatment of femoral neck fractures, but screw withdrawal, ...

AI Technical Summary

Problems solved by technology

However, due to the special anatomy of the femoral neck, there are anteversion angles, neck inclination angles, and neck-shaft angles, and there is a certain learning curve for the new technology of FNS, which requires the operator to have rich experience and skilled surgical techniques. At the same time, multiple fluoroscopy adjustments are required. The proper position of the guide pin in the femoral neck, and the repeated adjustment of the guide pin in the femoral neck will affect the bone quality, thereby affecting the stability of internal fixation; at the same time, multiple fluoroscopy during the operation will increase the operation time and increase the radiation intensity of patients and medical staff. exposure risk