Research Article

Effective Range of Percutaneous Posterior Full-Endoscopic Paramedian Cervical Disc Herniation Discectomy and Indications for Patient Selection

Table 1

Pre- and postoperation measurements of distances between the dural sac and herniated disc and distances between the dural sac and the medial border of discectomy (mean ± SD).

IndicatorsDSPHD (mm)DSMHD (mm)DSMD (mm)

Measured value3.87 ± 1.326.91 ± 1.215.41 ± 1.40

DSPHD: the vertical distance between lateral border of dural sac and peak of herniated disc; DSMHD: the vertical distance between lateral border of dural sac and intersection of dural sac and medial border of herniated disc; DSMD: the vertical distance between lateral border of dural sac and intersection of dural sac and medial border of discectomy.