Neurospine.  2022 Mar;19(1):202-211. 10.14245/ns.2143008.504.

Reconstruction of the Cervical Lateral Mass Using 3-Dimensional-Printed Prostheses

• Jian Q
• Liu Z
• Duan W
• Guan J
• Jian F
• Chen Z

• KMID: 2528391
• DOI: http://doi.org/10.14245/ns.2143008.504

Abstract

Objective
This study aimed to investigate the outcome of using 3-dimensional (3D)-printed prostheses to reconstruct a cervical lateral mass to maintain cervical stability.
Methods
We retrospectively analyzed data of 7 patients who underwent cervical lateral mass reconstruction using a 3D-printed prosthesis, comprising axial and subaxial lateral mass reconstruction in 2 and 5 patients, respectively. Bilateral mass was reconstructed in 1 patient and unilateral mass in the remaining 6 patients.
Results
Using a 3D-printed lateral mass prosthesis, internal fixation was stable for all 7 patients postoperatively. No implant-related complications such as prosthesis loosening, displacement, and compression were observed at the last follow-up.
Conclusion
Reconstruction of the lateral mass structure is beneficial in restoring load transfer in the cervical spine under physiological conditions. A 3D-printed prosthesis can be considered a good option for reconstruction of the lateral mass as fusion was achieved, with no subsequent complications observed.

Keyword

Lateral mass; Prothesis; Three-dimensional printing; Axis; Subaxial cervical spine