著者

武内 正典 茨木 邦夫

出版者

West-Japanese Society of Orthopedics & Traumatology

雑誌

整形外科と災害外科 (ISSN:00371033)

巻号頁・発行日

vol.39, no.2, pp.579-581, 1990-10-25 (Released:2010-02-25)

参考文献数

8

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Experiments in our laboratory have shown that steroid therapy commenced immediately before the operation prevents the functional deficit caused by silicone cuffs applied to intact sciatic nerves in rats. A further study showed that epineurectomy alone caused no significant functional deficit. In this experiments when compression was applied after removal of the epineurium the same dose of steroid used in our previous experiments proved unable to prevent the functional deficit.In intact nerves, it is probable that the trauma of cuff application caused edema of the intraneural pressure in the segment under the cuff and thus neuronal injury. The maximum injury and edema would occur in the epineurium, which can be prevented by steroid administration. Following epineurectomy edema of the perineurium and endoneurium resulted in a similar pressure increase that was not prevented by the steroids.

著者

仲村 一郎 屋良 哲也 伊佐 真徳 宮里 剛成 新垣 勝男 野原 博和 金谷 文則 茨木 邦夫 高良 宏明

出版者

West-Japanese Society of Orthopedics & Traumatology

雑誌

整形外科と災害外科 (ISSN:00371033)

巻号頁・発行日

vol.49, no.4, pp.1084-1087, 2000-09-25

参考文献数

5

被引用文献数

1

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Intraspinal osteochondroma is rare. Only 29 intraspinal osteochondromas were reported in the Bone Tumor Registry in Japan from 1972 to 1992 and this accounts for 0.4% of all osteochondromas.<br>We report a case of intraspinal vertebral osteochondroma causing thoracic myelopathy. An 8-year-old boy was noticed to fall down easily on gait by his mother. He showed spastic gait, and one week later he had difficultly in walking progressively. Neurological examination revealed hyperreflexia of both lower extremities, right ankle clonus, positive Babinski signs, and sensory change under the level of Th4. A myelogram demonstrated a right lateral extradural mass with complete spinal block at Th1. Computed tomogram (CT) demonstrated an osseous mass arising from the right facet of Th1/2. A right hemilaminectomy of Th1 was carried out, and the osseous mass including the right superior articular facet of Th2 was excised. No spinal fusion was performed. Histopathologically, it was determined to be a benign osteochondroma. Eight months after surgery, neither recurrence of the tumor nor instability of the spine was seen.