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en: Management of osteoporotic vertebral fractures. In: ISCoS Textbook on comprehensive management of spinal cord injuries

en: Wolters Kluwer (India)

ja: Wolters Kluwer (India)


en: Management of Osteoporotic Vertebral Fractures

en: Wolters Kluwer

ja: Wolters Kluwer


en: Neuroprotection and regeneration of the spinal cord. Uchida K, Nakamura M, Ozawa H, Katoh S, Toyama Y(Eds) --- Oxidative stress as secondary injury mechanism

en: Springer Japan

ja: Springer Japan


en: Neuroprotection and Regeneration of the Spinal Cord


en: 経椎体的椎間板ヘルニア切除術

ja: 経椎体的椎間板ヘルニア切除術


en: スポーツによる腰痛の診断の進め方

ja: スポーツによる腰痛の診断の進め方

en: KANEHARA & CO., LTD.

ja: 金原出版 株式会社


en: キャンベル整形外科手術書 総監訳藤井克之 編集安井夏生 (原著第10版) --- 非外傷性軟部組織疾患/先天異常/骨軟骨症


en: Natural history of extruded lumbar intervertebral disc herniation

en: Faculty of Medicine

ja: Faculty of Medicine

en: We studied the natural history of extruded lumbar intervertebral discs using MRI. Forty-nine patients with lumbar disc herniation were included in this study. Ages ranged from 19 to 57. On the T2-weighted sagittal MR image, the signal intensity in the herniated mass was measured and the ratio to that in the original nucleus (i.e., nucleus pulposus from which they extruded) was calculated (signal intensity ratio; SIR). The relationship with SIR and duration of illness was evaluated. In ten patients who were re-examined by MRI after conservative treatment, the size of the herniation measured by T1-weighted axial MR image was compared before and after treatment. The signal intensity of HNP became higher than that of the original nucleus immediately following herniation and thereafter decreased with time, suggesting that initial hydration of the HNP occurred shortly after herniation followed by dehydration of the HNP. The size of the HNP with a SIR value of 1.2 and higher on T2-weighted MR images decrease with time, however, the HNP with a SIR below 1.2 did not show any size reduction. The SIR of 1.2 and higher is a good indicator predicting spontaneous reduction of the HNP. Dehydration in the HNP may play an important role in the reduction of the lumbar disc herniation.