Analysis of the application of 3D printing technology to ankle surgery
The ankle and foot have the characteristics of many bones and joints, complex shape and small volume. Therefore, the diagnosis and treatment of this part of the wound has always been one of the difficulties in the field of orthopedics. With the rapid development of computer technology, 3D printing technology came into being. Thanks to the rapid and individualized advantages of 3D printing technology, some research difficulties in the foot and ankle area have been broken.
1, personalized foot and orthosis customization
The ankle orthosis is a device used to control the movement of the ankle and foot and can be used to fix arthritis, fracture sites and correct ankle and ankle deformities. The mass-produced ankle orthosis models are limited and do not provide individualized services for optimal orthopedic effects. Although the customized ankle orthosis solves the above problems, it takes a long time to manufacture and requires high technical skills.
The 3D printed ankle orthosis uses reverse engineering and rapid prototyping technology to achieve the same or even better results than the customized ankle orthosis, while greatly reducing the difficulty of making the individualized ankle orthosis and shortening the production time. And it performs well in terms of resistance to pressure and torsion. At present, the ankle orthosis made by 3D printing technology has performed well in various tests and experiments, and it is expected to be put into clinical application.
2, the foot and ankle bone model
The foot and ankle have many bones and complex shapes. The surgeon needs to have solid anatomical knowledge, strong spatial imagination, rich clinical experience and perfect preoperative design. Even with the above conditions, individualized differences in patients can lead to increased difficulty in surgery and increased operating time.
Preoperative preparation of the 3D print model of the ankle bone can provide a realistic simulated surgical environment to help the surgeon to fully observe and understand the surgical site. In addition, the ankle and foot bone 3D print model can also be used for preoperative pre-reset, intraoperative plate screw placement and internal fixation simulation. The guiding template can help fracture reduction, plate pre-bending, position and angle of internal fixation, osteotomy orthopedic design, etc., because it can reduce the difficulty of surgery, increase the accuracy of surgery, and reduce the number of intraoperative fluoroscopy. Clinically, it has a more optimistic application prospect.
3, implant personalized design
Injury to the ankle and foot often causes bone defects, and proper bone grafting is required to reshape the structural integrity. However, due to the complex bone structure of the ankle and the skeletal defect, the shape of the implant often takes a lot of time during the operation.
Using the 3D printing model, 3D printing technology can be used to prepare individualized bone fragments and prosthesis before surgery, which not only saves operation time, but also achieves better matching. At present, 3D printing technology is mainly used for pretreatment of steel plates. Steel plates treated by 3D printing technology can adapt to the patient's bone condition more individually than traditional steel plates, thereby achieving better efficacy. LeUkers and others use 3D printing technology to print hydroxyapatite scaffolds and culture stem cells on them to make these scaffolds resemble human bone structures. 3D printing technology can construct objects of any shape, so its application value in ankle surgery is worthy of further study.
Conclusion
The ankle orthosis made with 3D printing technology can not only achieve individualized treatment, but also reduce labor and time costs. For complex ankle surgery, 3D printed models and guided templates can not only reduce the difficulty of surgery, reduce the number of intraoperative perspectives, but also enhance the accuracy of surgery. In addition, 3D printing technology can also be applied to the manufacture of individual implants. With the advancement of 3D printing model surface treatment and geometric accuracy, 3D printing technology has great room for direct printing of implants.
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