Anterior cervical discectomy and fusion (ACDF)Dynamic versus rigid fixation: does having a rigid fusion affect outcomes in spine surgery?
30 December 2009 (online)
It is not clear whether dynamic or rigid fixation is better in anterior cervical discectomy and fusion for patients with degenerative disc disease based on evidence from two small to moderate sized randomized controlled trials. Functional scores, pain, and fusion appear to be similar in patients treated with dynamic and rigid plates, but implant complications may be more frequent for the rigid plate group and loss of lordosis may be greater in the dynamic plate group based on the results from one randomized controlled trial. Results did not clearly favor one treatment over the other which may in part be due to bias from variable, low follow-up rates. To better understand the differences in outcomes between dynamic and rigid fixation in anterior cervical discectomy and fusion, additional larger, methodologically rigorous trials are needed.