Baba H, Imura S
Department of Orthopaedic Surgery, Fukui Medical School, Japan.
Int Orthop. 1993 Nov;17(5):290-2. doi: 10.1007/BF00181701.
We report an unusual ossified thoracic disc herniation occurring in a man, aged 69 years. The ruptured disc formed a large mass occupying the entire spinal canal at the T8-T9 intervertebral level. Histology confirmed that this was an ossified disc with mature bone tissue. He improved after decompression through a posterolateral approach.