Posterior Percutaneous Transpedicular Endoscopic Approach for Treating Single-Segment Cervical Myelopathy

Figure 1

(a) Operative position. The patient is placed in a prone position with the neck in slight flexion. (b) A mark is made on the skin after fluoroscopy. (c) After a dilation sequence along the K-wire, the endoscopic sheath is inserted, and the second-level dilator is replaced by a trephine. (d) The right C6 pedicle is demarcated by 45-degree oblique fluoroscopy and the corresponding local amplification (g). (e) A 2 mm K-wire is inserted through the incision and anchored on the medial margin of the pedicle, as confirmed by 45-degree oblique fluoroscopy and the corresponding local amplification (h). (f) The endoscopic sheath is inserted with the beveled opening facing toward the median and the corresponding local amplification (i).