摘要：

The world’s first clinical report on implantation of a 3D-printed mobile cervical prosthesis for the treatment of cervical spondylotic myelopathy was published in China in June 2021[1]. It is the continuation of spinal surgery from spinal stability to mobile artificial cervical spine surgery. The first step forward in the field of mobile artificial cervical surgery is the bullet implant by Fernstroem[2]. A variety of mobile discs for the cervical spine (Bryan) were published[3-5]. The first with permission for the European Market was the implant from the Charité in Berlin (Büttner-Janz, 1988)[6-7] which I used in Vienna. Although there are some problems, such as motion loss, ossification of intervertebral space, cervical implant displacement and loosening, some cases have achieved certain results[8-9]. 

Professor He Xijing, the inventor of the 3D-printed mobile artificial cervical prosthesis, and his team developed a mobile cervical spine implant after a series of biomechanical studies and animal experiments in combination with 3D printing technology. The mobile cervical prosthesis is composed of an artificial vertebral body with a microporous structure in the middle part and two ball and socket artificial inter vertebral discs at both ends. Five patients with severe cervical spondylotic myelopathy were treated with this technique. The follow-up results of more than one year showed the safety and effectiveness of early mobilization with the cervical spine implant. The effect of spinal cord decompression is accurate and obvious, and comparable with that of anterior cervical corpectomy and fusion. On the basis of subtotal vertebral resections, the stability and motor function of the cervical spine at the operation site are reconstructed at the same time and the results are encouraging. Future investigations will prove the continuous movement in the respective segments. 

Professor He Xijing applied 3D printing technology to the mobile artificial cervical spine as a new non-fusion method. He combined materials science for artificial joints with biomechanics and design for a cervical prosthesis. Hopefully, it will become one of the research directions of development of spinal column surgery globally in the near future.  

中图分类号: 

• R459.9

• R394.2

• R542.2