Fig. 2From: Comparison between single-segment Isobar EVO dynamic stabilization and Isobar TTL dynamic stabilization in the treatment of lumbar degenerative diseases: a single center retrospective study over 4 yearsA 55-year-old man had spinal stenosis and disc herniation at L3–4, and the ROM of the surgical segment was 8.3° based on X-ray (A-B). The MRI of pre-operation showed that the disc signal of L3/4 and L4/5 (C-E). He underwent fenestration decompression and posterior EVO dynamic fixation at L4–5. The radiographs obtained 53 months after the operation showed the operative segment’s ROM was 4.3°, and the ISH of the L4/L5 remained unchanged from preoperative. The L3/L4 and L4/5 intervertebral disc signal was normal, with no significant change from preoperative (F-J)Back to article page