Fig. 2. Representative case of fusion in a female patient with back pain caused by an extensive posterior annulus rupture. (A) Preoperative T2-weighted (T2W) magnetic resonance imaging (MRI). Decreased signal intensity in the disc space at the L4–L5 level (Pfirrmann grade 3). (B) Postoperative T2W MRI. Fusion at the same level is visible after 12 months postoperatively (Pfirrmann grade 5).
