Fig. 3From: The influence of anterior cervical discectomy and fusion surgery on cervical muscles and the correlation between related muscle changes and surgical efficacySchematic diagram of changes in the ratio of long and short diameter line (RLS) of the cervical longus at the surgical segment before and after surgery. The postoperative RLS of each surgical segment increased, which indicates that the cross-sectional morphology of the cervical longus changed from “circular” to “elliptical”Back to article page