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The patient presented thoracic OLF of T3 and T4 in CT scan with spinal canal occupancy ratio of 72%, and high signal in MRI. We performed laminectomy and resection of the OLF completely, which was confirmed by postoperative CT scan. Unfortunately, she experienced postoperative neurological deterioration from preoperative Frankel C to Frankel A. CT = computed tomography, MRI = magnetic resonance imaging, OLF = ossification of the ligamentum flavum.
