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The pre- and postoperative magnetic resonance imagings (MRIs) of the 66-year-old female patient. (A) Preoperative sagittal T2-weighted image (T2WI). (B) Two-year postoperative sagittal T2WI. The postoperative MRI demonstrate good decompression and alignment of the lumbar spine. Arrow: regression of herniated disc at L1–2. Diamond: rehydration and increased signal intensity of bridged disc at L2–3. Double arrows: the reduced and well-maintained alignment at L3–4.
