3D printing navigation template for operation of children hip joint dislocation and preparing method of 3D printing navigation template

Abstract

The invention discloses a 3D printing navigation template for an operation of children hip joint dislocation. The 3D printing navigation template comprises an upper end which covers the upper portion of the outer side of hip bones and a lower end which coves the lower portion of the outer side of the hip bones, a wedge-shaped slot is formed in the junction of the upper end and the lower end, the upper end is provided with a detachable bone-cutting end cover, and a kirschner wire inserting hole is formed in the bone-cutting end cover. The invention further discloses a manufacturing method of the 3D printing navigation template for the operation of children hip joint dislocation, through the design of the wedge-shaped slot and the bone-cutting end cover of the navigation template, precise locating in the operation of bone cutting and ilium sawing is conducted, the operation time is shortened, and the operation precision is improved. The navigation template is subjected to personification customizing through a 3D printing technology according to different disease conditions of child patients, and the 3D printing navigation template is totally applicable to every infant patient.

Description

technical field [0001] The invention belongs to the technical field of surgical navigation templates, and in particular relates to a 3D printed navigation template for children's hip joint dislocation surgery and a manufacturing method thereof. Background technique [0002] Hip dislocation is a relatively common congenital deformity. The femoral head loses its normal relationship with the acetabulum in the joint capsule, so that it cannot develop normally before and after birth. Salter pelvic osteotomy is a surgical treatment for hip dislocation. It is mainly suitable for children with hip dislocation aged 1.5 to 6 years. Those who are too shallow and not too small. The maximum age limit for unilateral dislocation can be slightly increased, and this operation can be used as a remedy for the first treatment or failure of other treatments. [0003] The operating principle of Salter’s pelvic osteotomy is that the iliac osteotomy takes the pubic symphysis as the axis, like a h...

AI Technical Summary

Problems solved by technology

[0004] During hip joint reduction surgery, after the femoral head is put into the acetabulum, if the femoral head protrudes upward when the hip joint is adducted, and protrudes forward when the hip joint is straightened or externally rotated, hip osteotomy should be performed. During the bone osteotomy operation, the ilium is cut off through the top of the acetabulum, perpendicular to the longitudinal axis of the ilium, and a wedge-shaped gap is formed. After filling the wedge-shaped gap with bone pieces from the hip bone wing, it needs to be fixed with the help of Kirschner wires. The operation process In the middle, the direction and depth of the Kirschner wire insertion are not easy to grasp. If the insertion depth and direction are wrong, it needs to be withdrawn and reinserted, which will easily increase the blood loss during the operation, and increase the time and risk of the operation.

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