Journal of Shandong University (Health Sciences) ›› 2023, Vol. 61 ›› Issue (3): 134-140.doi: 10.6040/j.issn.1671-7554.0.2020.1018

• 临床医学 • Previous Articles    

Application of 3D-printed titanium interbody fusion cage in 37 cases of single level lumbar surgery

ZHU Chao, SUN Chao, LIU Xuchang, XIA Dawei, MA Chuncheng, FENG Rongjie   

  1. Department of Spine Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
  • Published:2023-03-24

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Abstract: Objective To investigate the advantages and early clinical effects of 3D-printed interbody fusion cage in single level posterior lumbar decompression and bone grafting and internal fixation. Methods Clinical data of 73 patients who underwent single segment posterior lumbar decompression, bone grafting, fusion and internal fixation during May 2021 and Jan. 2022 were retrospectively analyzed. The patients were divided into two groups: 3D-printed titanium cage group(n=37)and poly-ether-ether-ketone(PEEK)cage group(n=36). The visual analogue scale(VAS)and oswestry disability index(ODI)were observed before and after surgery to evaluate the lumbar function and postoperative improvement. The bone mineral density(BMD), operation time, intraoperative bleeding, intraoperative allograft implantation, postoperative drainage, short-term complications, lumbar lordosis(LL), disc height(DH), loss of LL, loss of DH and interbody fusion rate were compared between the two groups. Results All operations were successful and patients were followed up for 3 months. There were no statistical significances between the two groups in operation time, intraoperative bleeding volume, postoperative drainage volume, VAS score and ODI score 3 months after operation(P>0.05). The amount of allogeneic bone implantation in 3D cage group was less than that in PEEK cage group(P<0.05). LL and DH of both groups were significantly larger after operation(P>0.05). There were no significant differences in loss of LL and loss of DH 3 months after surgery between the two groups(P<0.05). However, for patients complicated with osteoporosis, loss of LL and loss of DH in the 3D cage group were smaller than those in the peek cage group(P<0.05). The fusion rate 3 months after surgery was 72.97% in the 3D cage group and 69.44% in the PEEK cage group, with no statistically significant difference(P>0.05). No internal fixation fracture, loosening or displacement occurred. Conclusion The use of 3D-printed interbody fusion cage in single level lumbar fusion has a good effect of vertebral fusion, which can restore and maintain the lumbar lordosis and interbody height. Particularly in patients complicated with osteoporosis, 3D-printed cage has good anti-settlement properties, reduces the risk of vertebral collapse and improves the overall stability of the mechanical structure of the lumbar spine.

Key words: 3D-printed interbody fusion cage, Single level lumbar fusion, Lumbar lordosis, Interbody height, Osteoporosis

CLC Number: 

  • R681.5
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