3Okada K,Oka S,Tohge K,et al. Thoracic myelopathy caused by ossi-fication of the ligamentum flavum. Clinicopathologic study and surgi-cal treatment. Spine,1991,16 :280.
4Otani K,Aihara T,Tanaka A,et al. Ossification of the ligamentumflavum of the thoracic spine in adult kyphosis. Intern Orthop,1986,10:135.
5Guo JJ,Luk KD,Karppinen J,et al. Prevalence,distribution,andmorphology of ossification of the ligamentum flavum :a populationstudy of one thousand seven hundred thirty-six magnetic resonanceimaging scans. Spine(Phila Pa 1976),2010,1:51.
6Yayama T,Uchida K,Kobayashi S,et al. Thoracic ossification of thehuman ligamentum flavum :histopathological and immunohistochemi-cal findings around the ossified lesion. J Neurosurg Spine,2007,2 :184.
7Nishiura I,Isozumi T,Nishihara K,et al. Surgical approach to ossifi-cation of the thoracic yellow ligament. Surg Neurol,1999,51:368.
8Xiong L,Zeng QY,Jinkins JR. CT and MRI characteristics of ossifi-cation of the ligamenta flava in the thoracic spine. Eur Radiol,2001,11:1798.
9Yukawa Y,Kato F,Sugiura H. Solitary osteochondroma ofthe lowercervical spine. Orthopedics,2001,24:292.
10Palumbo MA,Hilibrand AS,Hart RA,et al. Surgical treatment ofchoracic spinal stenosis:a 2 to 9 year follow up. Spine,2001 ,26:558.
