January 26, 2016, doctors in Phramongkutklao hospital of Bangkok, Thailand announced that they successfully replaced a thumb metacarpal using 3D printing titanium prosthesis, which is the first time in the world.
Dr. Thipachart Punyaratabandhu, director of orthopedic physician at the hospital made the announcement. At the same time, he shows the details of how his team implanted a 3D-printed titanium thumb phalanx to a female patient's hands. The patient's phalanx had deteriorated due to a tumor before the surgery.
In traditional metacarpal transplant, the doctor will usually take down a bone from the hip or legs as an implanted phalanx, but subsequently the activity of the surgically implanted phalanx is not so flexible. In contrast, 3D printed titanium prosthesis is lighter and stronger. The 37-year-old patient can resume normal use of her thumb after surgery, just as before.
"If you use the old method, the patient will be unable to move her thumb or the tumor may have grown back, but after implantation of titanium phalanx 3D printing, patients are able to use her hands as usual." Dr. Thipachart Punyaratabandhu explained.
Treatment team beginning to patients' health left thumb scan and X-rays taken, and then mirroring render her right thumb phalanx should look like the original, and the resin material 3D printing its model, and finally with a medical titanium casting out. The entire manufacturing process a total of only about a week, but Phramongkutklao Hospital orthopedic team of doctors to develop the 3D thumb print project has spent nearly two years.
It is understood Heavenly Society, surgery is the last from the beginning of June, when the doctor will worsen bone removed from the hands of the patient, and wait for some time to ensure that the cancer will not recur. When in late September after the confirmation, the surgeon continued operation, and implant titanium phalanx joined together with the nearest tendon.
Now, a few months later, the patient's body recovers well and she can already precede normal use of her hands as before. Boonrat Lohwongwatana, who was involved in manufacturing this 3D printing implant, said: "This technique also can be used to replace damaged bones elsewhere in the body. It can be produced in just a few weeks."
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