Fig. 7From: The influence of anterior cervical discectomy and fusion surgery on cervical muscles and the correlation between related muscle changes and surgical efficacyAnalysis of the correlation between the volume of cervical longus and NDI in 65 patients at the 3rd month (A), 12th month (B), and the last follow-up (C) after surgery. There was a negative correlation between the volume of cervical longus and NDI, which indicates that the decrease in the volume of cervical longus may be the cause of postoperative neck painBack to article page