fig3

Figure 3. (A) Interlaminar window and yellow ligament (*) are clearly seen; (B) inferior edge of C5 vertebral lamina is partially cut with a high-speed drill; (C) superior edge of C6 vertebral lamina is also resected; (D) the yellow ligament is cut with scissors; (E) lateral edge of dura mater and C6 nerve root (**) should be completely decompressed. Left side: cephalic; right side: caudal; upper side: medial; lower side: lateral