Recently, Professor Hong Bo, the chief of the Department of Bone Oncology of the Xiangya Hospital of Central South University, used the Huaying Hi-Tech Medical Application Center-Hunan Huaxiang 3D printing technology to assist in osteosarcoma resection, while thoroughly and accurately removing the tumor. Retain the joint for the patient. It is reported that this is the first time in Central and South China to use 3D printing technology to develop preoperative plans and make personalized osteotomy guides, which have been successfully applied in osteosarcoma surgery.

Osteosarcoma

The 17-year-old Xiao Zhang was diagnosed with a distal femoral osteosarcoma in his right leg. Osteosarcoma ranks first in the incidence of primary malignant bone tumors, and the degree of malignancy is very high. The survival rate is only 5% to 20% after 3 to 5 years after amputation, which is very harmful to patients' quality of life and even life. In order to be safe, the general femoral osteosarcoma limb salvage surgery needs to remove all the tumor side bone segments, including adjacent joints, and replace them with artificial joints. However, after the important tissues such as the joint capsule and ligament are removed, the joint function will be affected, and the patient may have inconvenience in action. At the same time, because the artificial joint has a service life of only 5 to 10 years, the patient will need to perform multiple operations to replace the joint in the future, and repeated surgery may result in less and less bone mass, and ultimately still face the dilemma of amputation.

Considering that the patient is only 17 years old, there is still a long way of life to rely on healthy, complete legs to practice. Under the support of Prof. Hu Yuhe, the director of the Department of Orthopaedics of Xiangya Hospital of Central South University, Professor He Hongbo carefully analyzed the patient's condition and the effect of preoperative neoadjuvant chemotherapy before surgery. He decided to use 3D printing technology to assist surgery during surgery. For the small Zhang to completely remove the tumor while retaining the normal joint.

3D printing to keep patients joints

"The 21st century medical care should move toward the goal of individualization, precision, minimal innovation, and remoteness, and 3D printing technology has the first two advantages." According to Professor He Hongbo, what is different from the past is that this time With Huaxiang 3D printing technology to assist surgery, it not only stops the accurate reduction of the patient's condition before surgery, but also provides a reference for the surgical plan. The 3D printing technology is actually applied to the operation, and the positioning with high accuracy and high consistency is made according to the patient's condition. The bone guide plate can accurately remove the tumor segment while retaining the patient's joint.

After careful preparation, on January 8th, the team led by Prof. He Hongbo conducted a resection and reconstruction of the right femoral osteosarcoma for Xiao Zhang. During the operation, Professor He Hongbo accurately cut off the tumor by means of the osteotomy guide made by 3D printing, retaining the patient's own joints, and then implanting the allogeneic bone to make it heal itself after surgery.

"This way to completely remove the tumor while retaining the patient's own joints is very beneficial for his postoperative knee function recovery. In the future, there is no need to perform multiple operations to replace the joints." Professor He said that the operation was very smooth, after a period of time. After recovery, Xiao Zhang will be able to recover and be discharged.

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