MRI of Cervical OPLL
MRI findings of 41 patients with cervical OPLL were investigated. The 41 patients consisted of 28 males and 13 females with a mean age of 59 years (range, from 43 to 80 years). According to the morphological classification of OPLL, 12 patients had continuous type, 13 had mixed type, and 16 had segme...
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| Published in | Orthopedics & Traumatology Vol. 39; no. 1; pp. 237 - 242 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
West-Japanese Society of Orthopedics & Traumatology
1990
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| Online Access | Get full text |
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| Abstract | MRI findings of 41 patients with cervical OPLL were investigated. The 41 patients consisted of 28 males and 13 females with a mean age of 59 years (range, from 43 to 80 years). According to the morphological classification of OPLL, 12 patients had continuous type, 13 had mixed type, and 16 had segmental type. The ratio of spinal canal narrowness by OPLL was measured on roentgenograms and compared with the MRI findings. Spinal cord compression on T1-weighted sagittal images was little demonstrated in the patients with a narrowing ratio of less than 30%. Dural tube compression on T2-weighted images was not seen in the patients with a narrowing ratio of less than 20%. T2-weighted axial image was a most sensitive method for demonstrating OPLL. Degenerative changes of disc on MR image were frequently observed at the level of OPLL; 100% of segmental type, 93% of continuous type and of mixed type. |
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| AbstractList | MRI findings of 41 patients with cervical OPLL were investigated. The 41 patients consisted of 28 males and 13 females with a mean age of 59 years (range, from 43 to 80 years). According to the morphological classification of OPLL, 12 patients had continuous type, 13 had mixed type, and 16 had segmental type. The ratio of spinal canal narrowness by OPLL was measured on roentgenograms and compared with the MRI findings. Spinal cord compression on T1-weighted sagittal images was little demonstrated in the patients with a narrowing ratio of less than 30%. Dural tube compression on T2-weighted images was not seen in the patients with a narrowing ratio of less than 20%. T2-weighted axial image was a most sensitive method for demonstrating OPLL. Degenerative changes of disc on MR image were frequently observed at the level of OPLL; 100% of segmental type, 93% of continuous type and of mixed type. |
| Author | Nagata, Kensei Inoue, Akio Takamatsu, Toru Sagara, Masashi Miyazaki, Shinpei |
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| References | 9) 関寛之: 頸椎後縦靭帯骨化症185例の臨床的検討. 整形外科, 25: 704-710, 1974. 10) 谷川悦雄: 後縦靭帯骨化症に関する臨床細胞遺伝学的研究. 整形外科, 36: 93-100, 1985. 7) 大竹正一郎: 後縦靭帯骨化症 (OPLL) の MRI. 臨放, 33: 989-993, 1988. 3) 国分正一: 脊柱管内靭帯骨化症のCT. 整形外科 MOOK, 50: 59-71, 1987. 5) 岡田征彦: 頸椎後縦靭帯骨化患者の性ホルモン定量 (第1報). 殊に Estrogen との関係. 臨整外, 16: 968, 1981. 1) 後藤澄雄: 脊柱靭帯骨化症例の成因論. 整形外科MOOK, 50: 131-145, 1987. 2) 星野雄一: 脊柱靭帯骨化症におけるカルシウム代謝. 整形外科 MOOK, 50: 146-151, 1987. 6) 小野啓郎: 靭帯骨化の病理と疾患モデル. 整形外科MOOK, 50: 111-119, 1987. 4) 南俊介: 脳脊髄MRI診断. 医学書院, 東京, 1989. 11) 土屋恒篤: 後縦靭帯骨化の成因論. 頸椎外科の進歩, 別冊整形外科, 2: 99-106, 1982. 12) 山下康行: 後縦靭帯骨化症, 黄色靭帯骨化症. 画像診断, 9: 662-669, 1989. 8) Schnebel, B.: Comparison of MRI to Contrast CT in the Diagnosis of Spinal Stenosis. Spine, 14: 332-337, 1989. |
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