3D printing is a cutting-edge new technology in today's world, and it is in the field of design manufacturing, materials engineering, cultural creativity, etc. Now, 3D printing is opening up in the field of biomedicine. On the 2nd, at the West China Hospital of Sichuan University, the first reconstruction of the trabecular bone trabecular prosthesis in China was successfully completed. This is like solving a problem of building a house to bear the weight of the column.
The patient who underwent reconstruction was named Xiaohua (a pseudonym), who was from Mianyang, Sichuan. Xiaohua was diagnosed with bone cancer at the age of 14 years. In May 2011, he underwent limb salvage surgery to reconstruct bone defects with allogeneic bone graft and preserved the knee joint. However, the graft in his leg developed a chronic rejection and then went through multiple operations.
A 3D printed prosthesis implanted in the patient's leg.
"If the next treatment is traditional, then the patient will not be able to protect their inherent knee function, the traditional prosthesis is easy to loose. The tumor knee prosthesis sacrifices its own joint, the 10-year prosthesis failure rate is about 20%, long-term effect "The poor", Professor Tu Zhongqi, director of the Department of Bone Oncology and Traumatology, West China Hospital of Sichuan University, said that his team developed a 3D printed plan to preserve the trabecular bone prosthesis of the knee joint.
Twelve days ago, Tu Tuqi team completed the reconstruction of the humeral dry metal trabecular prosthesis for Xiao Hua. They made a patient's tumor-based bone defect model based on the three-dimensional CT data of the affected limb, simulated the surgery in vitro and optimized the prosthetic structure design, and 3D printed trabecular humeral dry metal prosthesis. The surgical method retained Xiaohua's knee and allowed the prosthesis. Can achieve long-term biological healing in his body.
The patient demonstrated postoperative results and stretched freely.
On the afternoon of the 2nd, in the orthopaedic ward of West China Hospital of Sichuan University, Xiaohua, who was lying in the Hospital Bed, showed the reporter the effect of the operation. The sick right leg can flex and stretch freely. "This 3D printed trabecular humeral dry prosthesis is different from the past. The tibia is a heavy-weight bone and often requires a lot of stress. This is like building a house. We solved the problem of bearing weight of the column," said Professor Tu Zhongqi.
According to reports, the 3D printed prosthesis in Xiaohua's leg is the same as the normal joint, and its appearance matches it very well. Because the traditional prosthesis is very smooth and has no microporous structure, the 3D printing technology can be made into a microporous structure, which is completely consistent with the structure of Xiaohua's cancellous bone, which is beneficial to the growth of the bone cells of the cancellous bone.
"It used to be smooth and long, not like growing in stone crops. Now 3D printing technology is paving a thick layer of soil, and it is the same as other soils, which is conducive to the growth of crops," said Professor Tu Zhongqi. Traditional orthopedic prosthesis reconstruction is a "mechanical connection," and 3D print reconstruction is a "biological connection."
Professor Tu Zhongqi said that the 3D printed trabecular metal dry prosthesis has the advantages that can not be compared with the previous reconstruction methods. It is worthy of further application in the surgical treatment of lower limb weight-bearing malignant tumors. The prosthesis will be further improved and optimized. To promote the level of resection and reconstruction of limb malignant tumors.
Patient Lift,Medical Patient Lift Hoist,Electric Patient Lift Hoist,Medical Transfer Patient Lift
Jiangmen Jia Mei Medical Products Co.,Ltd. , https://www.jiamei-medical.com