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Similarities among non-Japanese and Japanese cases included:(1)male predominance;(2)peak age at onset of symptoms in the sixth decade;(3) clinical presentation,which ranged from asymptomatic to quadriplegia,with progressive or acute onset of neurologic deterioration;(4)greater than 95% localization to the cervical spine,spastic quadriparesis being the most common neurologic presentation;(5)an association with several rheumatic conditions including diffuse idiopathic skeletal hyperostosis(DISH), spondylosis,and alkylosing spondylitis;and(6)neurologic improvement with either conservative or surgical treatment in a significant proportion of patients.Differences between the two groups were minimal and included a higher mean age at onset(although onset in both groups occurred within the sixth decade)and a greater proportion of patients with DISH and with the continuous type of OPLL in the non-Japanese group.The clinical characteristics of OPLL are similar in Japanese and non-Japanese patients populations.Increased awareness of this condition,which has potentially devastating neurologic complications,will favorably influence diagnosis, treatment,and outcome. |
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ankylosing spondylitis
CAT scan
CAT scan,abnormal
CAT scan,spine
cervical spine
diffuse idiopathic skeletal hyperostosis
Japan
monoparesis
MRI
MRI,abnormal
MRI,spine
myelopathy
myelopathy,chronic progressive
neurologic disease,diagnoses of
posterior longitudinal ligament,ossification of
quadriparesis
quadriplegia
review article
spinal cord,compression of
spinal stenosis
spinal stenosis,cervical canal
spondylosis
treatment of neurologic disorder
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