PMC9852340_01
(A,B) The preoperative CT films conformed TOPLL at T1-T2 and T2-T3. (C,D) The preoperative MRI suggest the spinal cord at T2-T3 was compressed by TOPLL and became thinning.
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F1
Scoring System, the patient scored 5. Sagittal computed tomography (CT) films demonstrated the beak-type TOPLL at T1-T2 and T2-T3 levels, which occupied approximately 65% of the spinal canal volume at T2-T3 (Figures 1A,B). Magnetic resonance imaging (MRI) in the sagittal view showed that the spinal cord was severely compressed on the ventral side of the spinal cord and remarkable degeneration was caused by ossification of the posterior longitudinal ligament (OPLL) at T2-T3 (Figures 1C,D).