著者
朝日 稔 金 秀浩 藤本 基秋 岡田 崇志 平田 英周
出版者
日本脊髄外科学会
雑誌
脊髄外科 (ISSN:09146024)
巻号頁・発行日
vol.20, no.1, pp.55-61, 2006 (Released:2006-08-29)
参考文献数
14

Traumatic atlanto-axial subluxation (AAS) is a rare injury which can be diagnosed by flexion-extension dynamic radiograph on the cervical spine. Here we report on a case of delayed progression of AAS in the chronic phase after a cervical spinal injury. The described case is a 58-year-old man who sustained a closed occipital head injury with subsequent severe tetraparesis and was admitted to our hospital. Although, no obvious bony injuries of the cervical spine were revealed on plain radiograph and CT scan, Magnetic resonance imaging demonstrated intramedullary spinal cord injury at the level of C1-2. In the acute phase, the patient was treated conservatively and the motor dysfunction was well ameliorated. However, the patient gradually suffered again from motor deterioration eight months later and the radiological examinations revealed delayed progression of AAS. After the unsuccessful trial of external reduction for AAS, the patient underwent atlas laminectomy and occipito-cervical internal fixation with compact Cotrel-Dubousset instrumentation. The motor disability improved again after the operation. Sufficient decompression of spinal cord and stable fixation of craniovertebral junction have been obtained for over two years post-operatively. The unique clinical course of the present case is discussed.
著者
朝日 稔
出版者
一般社団法人 日本生態学会
雑誌
日本生態学会誌 (ISSN:00215007)
巻号頁・発行日
vol.7, no.1, pp.39-42, 1957-05-31 (Released:2017-04-08)

1. The cage used in the present study is a rectangular parallelopiped from, about 250cm×90cm at the base, and 850cm in height. 11 perches of tree branches are set in the cage, and the cage is divided into 9 sections (Fig.1). The names and numbers of the birds are shown in Table 1. Observations were made from Sept.27 to Oct.27,1956,in two periods separated by the transpositions of perches on Oct.10. 2. Interspecific antagonism is found in peckings and avnidances. Their frequencies are shown in Tables 2 and 3,which suggest the existence of the linear dominance-order among species. 3. The vertical distribution of each species observed in the cage is summarized in Fig.2. Apparently the individuals of Psittaciformes are found in the upper region of the cage (Sect.5-Sect.9), the individuals of Columbiformes in the lower (Sect.1), and the individuals of Passerlfomes in the middle. This segregation is probably derived from the differences of the life-forms of each Order. In the same Order, there are two types of interspecific distributions : the separating type, for example, Psittacus eyanocephala and Melopsittacus undulatus observed in the latter period, and the overlapping type, for example, Agapornis roseicollis and A. lilianae. Further observations reveal that the individuais of each species make species-flocks even in the overlapping type and they often exchange the perches (see Fig.3.) The principle of "habitat-segregation", proposed by K.IMANISHI (1941), is thus realized at all times. Only Taeniopygia castanotis and Uroloncha striata often make hetero-specific flocks together.
著者
朝日稔編
出版者
東海大学出版会
巻号頁・発行日
1980
著者
朝日稔著
出版者
培風館
巻号頁・発行日
1980
著者
朝日稔 [ほか] 共著
出版者
地人書館
巻号頁・発行日
1986
著者
朝日稔 川道武男編
出版者
朝倉書店
巻号頁・発行日
1991
著者
朝日稔編
出版者
東海大学出版会
巻号頁・発行日
1983
著者
朝日稔[ほか]共著
出版者
地人書館
巻号頁・発行日
1982
著者
朝日稔著
出版者
玉川大学出版部
巻号頁・発行日
1977
著者
朝日稔 [ほか] 共著
出版者
地人書館
巻号頁・発行日
1993