Dynamic fusion process in the anterior cervical discectomy and fusion with self-locking stand-alone cages.

Dynamic fusion process in the anterior cervical discectomy and fusion with self-locking stand-alone cages.

World Neurosurg. 2019 Feb 05;:

Authors: Xiong Y, Xu L, Bi LY, Yang JZ, Wang FX, Qu Y, Zhao ZY, Yang YD, Zhao DY, Li CH, Yu X

Abstract
BACKGROUND: Self-locking stand-alone cages can achieve satisfactory clinical results and fusion rate. However, there have been no reports on the causes and relationship of different fusion state. This study is to classify the different fusion state of the index level and to explore the potential contributing factors and links of them.
METHODS: From Jun.2008 to Oct.2011, 42 patients underwent ACDF with MC+ cages. More than 5 years` follow-up were reviewed. The fusion state, the relevant clinical and radiological records were reviewed retrospectively.
RESULTS: At the last follow-up, the fusion proportion of type I, II, III, IV was 11.7%, 16.9%, 26.9% and 42.9%, respectively. The overall fusion rate was 97.4%. For all the fused types, significant improvement for the VAS, JOA and NDI scores was found at the last follow-up (P < 0.05). However, there were no significant differences between the four types (P > 0.05). For SVA, type IV was significantly larger than that of type I, II and III (P < 0.05). And for ROM, type III was significantly larger than that of type II and IV (P < 0.05).
CONCLUSIONS: For the ACDF with self-locking stand-alone cages, the fusion of the index level seems to be a progressive dynamic process during the mid-term follow-up, which may be influenced by the location of the cage, the SVA of the index level and the global ROM of the cervical spine. Satisfactory clinical results could be achieved by all the fused types.

PMID: 30735878 [PubMed - as supplied by publisher]

from A via a.sfakia on Inoreader http://bit.ly/2DkNncy