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Updated: Aug 23, 2026

Laminectomy for the Removal of Thoracic Ossification of the Ligamentum Flavum (TOLF) Using Ultrasonic and Conventional Osteotomes
Published on: April 21, 2023
L5 radiculopathy caused by ossification of the ligamentum flavum: a case report
Dai-Youl Kim1, Nam-Jong Paik, Tai Ryoon Han
1Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
Abstract:
We describe a case of ossification of the ligamentum flavum in the thoracolumbar junction presenting as an L5 radiculopathy. Magnetic resonance imaging revealed a hypodense lesion on T2-weighted image at the T10-T12 level causing the right dural sac compression, and electrodiagnostic findings were compatible with the right L5 radiculopathy. The location and cause of the compression were confirmed by a surgery. The clinical findings and electrodiagnostic features of such lesions located at the thoracolumbar spinal junction are discussed.
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