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Titolo:
MAGNETIC-RESONANCE-IMAGING FINDINGS IN OSSIFICATION OF THE POSTERIOR LONGITUDINAL LIGAMENT OF THE CERVICAL-SPINE
Autore:
KOYANAGI I; IWASAKI Y; HIDA K; IMAMURA H; ABE H;
Indirizzi:
HOKKAIDO NEUROSURG MEM HOSP,CHUO KU,NORTH 22,WEST 15 SAPPORO HOKKAIDO060 JAPAN HOKKAIDO UNIV,SCH MED,DEPT NEUROSURG SAPPORO HOKKAIDO 060 JAPAN
Titolo Testata:
Journal of neurosurgery
fascicolo: 2, volume: 88, anno: 1998,
pagine: 247 - 254
SICI:
0022-3085(1998)88:2<247:MFIOOT>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORD COMPRESSION; MYELOPATHY; DIAGNOSIS;
Keywords:
OSSIFICATION OF THE POSTERIOR LONGITUDINAL LIGAMENT; DISC PROTRUSION; MAGNETIC RESONANCE IMAGING; SPINAL CORD COMPRESSION; SURGICAL APPROACH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
I. Koyanagi et al., "MAGNETIC-RESONANCE-IMAGING FINDINGS IN OSSIFICATION OF THE POSTERIOR LONGITUDINAL LIGAMENT OF THE CERVICAL-SPINE", Journal of neurosurgery, 88(2), 1998, pp. 247-254

Abstract

Object. Because of the lack of magnetic resonance (MR) signal from cortical bones, MR imaging is inadequate for diagnosing ossified lesionsin the spinal canal. However, MR imaging provides important information on spinal cord morphology and associated soft-tissue abnormality. The purpose of this study is to determine the role of MR imaging in thediagnosis and treatment of patients with ossification of the posterior longitudinal ligament (OPLL) of the cervical spine. Methods. The authors reviewed MR imaging findings in 42 patients with cervical OPLL who were examined with a superconducting MR imaging system. The types ofOPLL reviewed included eight cases of continuous, 21 cases of segmental, and 13 cases of the mixed type. All patients were treated surgically either by anterior (26 cases) or posterior decompression (16 cases). Conclusions. The T-1-weighted images clearly demonstrated the spinalcord deformity caused by OPLL. Associated disc protrusion was found to be present at the maximum compression level in 60% of the patients in this series. The highest incidence of disc protrusion (81%) was found in patients with segmental OPLL. Intramedullary hyperintensity on T-2-weighted imaging was noted in 18 patients (43%). The neurological deficits observed in these 18 patients were significantly more severe than those observed in the other 24 patients. Postoperative MR imaging revealed improvement in the spinal cord deformity, although the intramedullary hyperintensity was still observed in most cases. The present study demonstrates the importance of associated disc protrusion in thedevelopment of myelopathy in patients with cervical OPLL. Magnetic resonance imaging findings may be used to help determine the actual levels of spinal cord compression and to suggest the method of surgical treatment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 05:11:24