India's first 39-year-old man completes hip revision surgery implanted with 3D printed titanium
Although India is not as good as Europe and the United States in the field of 3D printing, it is still advancing the application of this technology. On May 16, 2018, the Antarctic bear learned from foreign media that the 39-year-old Indian man Amit Bhanot recently implanted a 3D printed titanium implant.
Amit Bano was once an "ordinary child who likes to ride a bike, cricket and other sports." Until 1991, he began to feel severe pain in his groin and right leg. He then went to different hospitals and received different diagnosis and treatment. At the same time, his right hip lost his ability to move. In 2000, Bhanot was diagnosed with ankylosing spondylitis, a severe arthritis that causes joint fusion. Bhanot's right hip joint has been fused and his left side has begun to be affected.
In 2007, Bhanot performed a total hip replacement in his right hip, and in 2008 his left hip was also replaced. From then on, he resumed mobility. But by 2017, he felt pain again and was told that he might need to complete the repair within a few years. Bhanot, 39, came to the surgical department of India's largest public hospital, the All India Institute of Medical Sciences (AIIMS). Prof. Rajesh Malhotra, orthopaedic director, pointed out that Bhanot had lost most of the pelvis and the prosthesis had failed. This type of bone loss cannot be corrected with traditional surgical techniques or ready-to-use implants.
Then, Malhotra turned to Sanjay Kumar Pathak and his company Global HealthCare, which created the first 3D printed titanium vertebra in India last year.
Pathak said: "After receiving the CT scan data, we handed over to Dr. Vijay Meena, a senior scientist who runs a government-owned design and printing factory."
"Because the metal implants in the patient's body already exist, CT data is full of artifacts, and segmentation of the data is a challenge. By separating the existing implants, we have created a lot of skeletal models, and in our FDM machines Printed on plastic. After the first prototype was created, we brought it to Prof. Malhotra just to find out what changes were needed in the design according to the surgical requirements. One by one, seven prototypes were made, and the last one. The prototype was approved, I immediately performed 3D printing on titanium, and after some problems, the implant was printed using EOSTitanium Ti64ELI.
After the 3D-printed titanium implant was brought to Bhanot's doctors, they realized that it was too smooth to fit in the cement cup. Pathak went to Gaurav Luhtra and his company Auxein, where technicians helped create several 2-5 mm corner pits on the implant surface. In addition, a hole was drilled in the implant to secure the implant on the pubic bone using screws. Finally, the implant was returned to Prof. Vijay Meena and his team. After inspection and ultrasonic cleaning, they were transferred to the hospital for multi-round sterilization.
On April 25, 2018, a revision surgery was performed. This is a difficult nine-hour operation because it involves a large number of major blood vessels and nerves. However, the patient is now recovering well and should be able to walk without pain or inconvenience.
Unfortunately, Bhanot must go through so many years of pain in order to finally get a perfectly fitting implant and allow him to complete painless exercise, but cases like him will become less common because 3D printing will It was used to create a custom implant for the first surgery and no longer needs to be revised later. Many patients like him still have pain and movement problems at the early stage of implantation, but 3D printing technology is providing these patients with their previously unachievable remissions.