岡田 英次朗 (オカダ エイジロウ)

Okada, Eijiro

写真a

所属(所属キャンパス)

医学部 整形外科学教室 (信濃町)

職名

専任講師(有期)

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  • 医学博士, 慶應義塾, 論文

    12. Aging of the cervical spine in healthy volunteers: a 10-year longitudinal magnetic resonance imaging study.

 

研究分野 【 表示 / 非表示

  • 整形外科学

研究キーワード 【 表示 / 非表示

  • 加齢性変化

  • 脊椎外科

 

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  • Physical Activities and Lifestyle Factors Related to Adolescent Idiopathic Scoliosis

    Watanabe, K., Michikawa, T., Yonezawa, I., Takaso, M., Minami, S., Soshi, S., Tsuji, T., Okada, E., Abe, K., Takahashi, M., Asakura, K., Nishiwaki, Y. and Matsumoto, M.

    J Bone Joint Surg Am 99 ( 4 ) 284 - 294 2017年02月

    ISSN  1535-1386

     概要を見る

    BACKGROUND: In addition to genetic factors, environmental and lifestyle factors are thought to play an important role in the onset of adolescent idiopathic scoliosis (AIS). This cross-sectional study was conducted to explore lifestyle factors related to AIS. METHODS: This study included 2,759 Japanese female junior high school students who planned a secondary screening after an initial moire topography screening indicated possible scoliosis. The students and their mothers, or guardians, were asked to fill out a questionnaire consisting of 38 questions about demographic factors, lifestyle-related factors, social factors, household environment, participation in sports, health status, and factors related to the mother's pregnancy and delivery. The questionnaire was completed by 2,747 students (a 99.6% response rate). After excluding students with heart disease, neurological disease, or a congenital vertebral anomaly, 2,600 students were eligible for assessment. After undergoing a secondary screening with standing radiographs of the spine, students were assigned to the normal (control) group if radiographs showed a curve of <15 degrees or to the scoliosis group if they had a curve of >/=15 degrees . The odds ratios (ORs) for AIS in relation to the possible risk or preventive factors were estimated by logistic regression analyses. RESULTS: No lifestyle-related factor was significantly associated with AIS. However, AIS was associated with classical ballet training (OR, 1.38; 95% confidence interval [CI], 1.09 to 1.75); the odds of AIS developing increased as the child's frequency of training, number of years of experience, and duration of training in ballet increased. The OR for AIS was 1.5 times higher for participants whose mothers had scoliosis. AIS was also associated with a low body mass index (BMI). These associations remained even after mutual adjustment was performed. CONCLUSIONS: No association was found between AIS and lifestyle-related factors. However, classical ballet training, a family history of scoliosis, and low BMI may be associated with AIS. LEVEL OF EVIDENCE: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

  • 【肩こりと後頸部痛の日常臨床】 後頸部痛に対する手術療法

    岡田, 英次朗, 西田, 光宏, 手塚, 正樹 and 松本, 守雄

    脊椎脊髄ジャーナル 29 ( 11 ) 1041 - 1046 2016年11月

    ISSN  0914-4412

  • CT-based morphological analysis of spinal fractures in patients with diffuse idiopathic skeletal hyperostosis

    Okada, E., Tsuji, T., Shimizu, K., Kato, M., Fukuda, K., Kaneko, S., Ogawa, J., Watanabe, K., Ishii, K., Nakamura, M. and Matsumoto, M.

    J Orthop Sci 2016年10月

    ISSN  1436-2023

     概要を見る

    PURPOSE: To clarify correlations between spinal fracture and delayed paralysis in patients with diffuse idiopathic skeletal hyperostosis (DISH) using computed tomography (CT) with multiplanar reformatting (CT-MPR). DISH increases susceptibility to unstable spinal fractures, leading to neurological deterioration. The pathomechanism of the neurological injury is unclear. METHODS: This multicenter retrospective study included 42 DISH patients (32 male; 10 female) treated for 45 spinal fractures during a 5-year period. The mean age at the time of injury was 77.1 +/- 10.1 years. The cause of injury, delay in diagnosis, fracture location, and neurological status were recorded, and anterior- and posterior-column fractures, a fracture displacement over 3 mm, and posterior-column ankylosis were assessed using CT-MPR. RESULTS: Most fractures (73.8%) resulted from trivial trauma, such as falling from a standing or sitting position. Diagnosis was delayed in 47.6% of the patients, primarily due to delays in seeking medical attention (65.0%). Although 78.6% of the patients were neurologically intact at the time of injury, 54.8% developed paralysis, defined by a change in one or more Frankel-score levels during short-term follow-up. Of the fractures, 39.1% were in the vertebral body, and 60.9% were at the disc level. Fractures with posterior-column ankylosis were significantly associated with delayed paralysis. CONCLUSIONS: CT-MPR was useful for evaluating spinal fractures and determining treatment in patients with DISH. Fractures associated with posterior-column ankylosis resulted in unstable three-column injuries that led to delayed neurological deterioration. Early surgical stabilization of such fractures is recommended to avoid delayed paralysis.

  • 【さまざまな基礎疾患・病態を有する症例に対する脊椎固定術】 びまん性特発性骨増殖症に対する脊椎固定術

    岡田, 英次朗

    脊椎脊髄ジャーナル 29 ( 5 ) 575 - 579 2016年05月

    ISSN  0914-4412

  • 【ロコモの視点を交えた腰部脊柱管狭窄症】 棘突起縦割式椎弓切除術

    岡田, 英次朗, 渡辺, 航太 and 松本, 守雄

    Loco Cure 1 ( 3 ) 222 - 227 2015年11月

    ISSN  2189-4221

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研究発表 【 表示 / 非表示

  • 頚椎脊索腫摘出・プレート併用前方再建再建術後3年で食道穿孔を来たした1例

    岡田英次郎,松本守雄,西澤隆,中村雅也,丸岩博文,千葉一裕,戸山芳昭,塩谷彰浩

    第43回関東整形災害外科学会, 2003年03月, 口頭(一般)

 

担当授業科目 【 表示 / 非表示

  • 整形外科学講義

    2019年度