Recently, Peking University Third Hospital successfully resected a five-segment spinal tumor for an orthopedic chordoma patient and completed the 19-cm long-span vertebral reconstruction using the world's first 3D printed multi-segment thoracolumbar implant.
It is reported that Mr. Yuan is suffering from chordoma, which is a malignant tumor with a wide range of violations. The five spines of the thoracic and lumbar spine are eroded. Medically, in this case, only the tumors on the five vertebral bodies are cut clean by surgery. But how do you support the five spines after they are removed?
"In this case, in the past, the titanium mesh was used to fill the autologous or allogeneic bone as an interbody support device, but once the titanium mesh was displaced and the spinal cord was compressed, the patient would be paralyzed. Further, the titanium mesh was straight cylindrical. , and the physiological curve of the spine 'S' shape does not match." Professor Liu Zhongjun, the chief surgeon of the patient and the head of the 3D printed artificial vertebral body research team certified by CFDA, said: "With metal 3D printing technology, you can follow the patient's anatomy. The structure creates an artificial vertebral body similar to the shape and length of the five-section vertebral body. The artificial vertebral body has a significant advantage. First, it can be placed between the adjacent vertebral bodies after the lesion is removed, which can provide a reliable connection and Supporting function. At the same time, the metal 3D printing artificial vertebral body can be arbitrarily designed in structure, and the connection between the artificial vertebral body and the rear internal fixed structure is specially designed. This device is integrated into the front and rear to make the stability greatly enhanced. The performance has reached a qualitative flyby. With such a fixed way, the patient can quickly move to the bed, and the greater advantage of the artificial vertebral body is that it is made into a microporous structure. After that, the shape can be like a sponge, similar to the bone in the 'trabecular bone', this 'trabecular bone' can help the adjacent normal vertebral body bone cells grow into it, and finally the two merge into one, thus achieving bone Integration."
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