Fig. 4
The surgical procedure of the triangular-shaped bone-anchoring annulus fibrosus suture technique under arthroscopic-assisted uni-portal spinal surgery. (A) Exposure of the protruding nucleus pulposus. (B) Excision of the nucleus pulposus reveals the damaged annulus fibrosus and a bone tunnel was drilled into the inferior vertebral body. (C,D) Penetration of the first stitch into the inferior vertebral body and tightening of the broken annulus fibrosus with the first stitch. (E) Penetration a second stitch on the broken fiber ring. (F,G) Tightening the knot with the previous suture from the previous bone tunnel. (H,I) Cutting the two stitches after knotting and no visible compression of the nerve root after suturing.
