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ID 16650
Eprint ID
16650
フルテキストURL
Thumnail 94_73.pdf 2.42 MB
タイトル(別表記)
Study on the Transverse Osseous Architecture of the Carpal Region
著者
河野 光信 岡山大学医学部整形外科学教室
抄録
手根部の形態学的研究は,臨床的に手根管症候群や見落され易いこの部の外傷の病態を知る上で重要であり,また手関節の運動の際に,個々の手根骨がどのような動きをするのかを検索することも運動学的に意義深いと考えられる.手根部の形態学的研究は,靱帯,腱,血管神経などの軟部組織を主体にしたものが多く,骨の構築に関するものは意外に少ない.8個の骨が形成する手根部の構築の研究はX線写真によるものが多く,その代表的なものにT.H.Bryce(1)),R.Arkless(2)),Y.Youm(3))の研究がある.これらは前後,側方2方向のX線像について,手関節の動きと骨相互の位置を研究したものである.しかし手根溝を横断面でみると,特徴的なアーチ構造を呈しており,これについての詳細な研究は,著者の渉猟する限りでは見当らないようである.また手根骨の骨梁についても個々の骨についての記載は,M.C.Hall(4))などにみられるものの手根溝を1つの構造単位として検索した研究はほとんどみられないようである.著者はこのような観点から,近年進歩した高分子化合物,硬組織薄切技術,超軟X線装置を用いて,手根溝の横断面の形状および骨梁構造について研究し考察を加えた.
抄録(別表記)
In order to study the transverse osseous architecture of the carpal region, eight wristhand specimens were obtained from four cadavers. The specimens were embedded in polyester resin after the soft tissues had been removed completely. The embedded specimens were cut into serial sections. The cutting was carried out perpendicular to the longitudinal axis of the third metacarpal bone. Each section was examined by microradiography. The shape of the bones, the width and the area of the carpal sulcus as well as the trabecular architecture were studied. The results were summarized as follows: 1. The bone shapes were divided into six groups, i.e. radio-ulnar joint level, proximal level of carpals, intermediate level of carpals, distal level of carpals, the first CM joint level and the metacarpal base level. The carpal sulcus corresponded to the intermediate, distal carpal level and to the first CM joint level. 2. Prominence of a volar arch of the carpal sulcus was observed not at the center of the arch but at the ulnar side. This prominence shifted more to the ulnar side in the distal level of carpals than in the proximal level. From these findings it was considered that the prominence of the volar arch functioned as a pulley for the flexor tendons of fingers in grasping. 3. Although the width of the carpal sulcus became narrower towards the distal level of the carpals, the largest area was obserbed at the distal level. From these observations, the cause of the carpal tunnel syndrome was considered to be an imbalance between the volume of the carpal tunnel and its contents such as flexor tendons and nerves. 4. The articulations of carpal bones indicated that the motion center of the carpal bones was situated at the head of the capitate. 5. The trabecular orientation was divided into three groups: trabeculae perpendicular to the joint surface, trabeculae crossing each other at right angles which were observed at radial and ulnar prominences of the carpal sulcus, and trabeculae arranged without interruption through the arch of the carpal sulcus.
キーワード
手根溝
骨梁構造
骨性構築
microradiography
発行日
1982-02-28
出版物タイトル
岡山医学会雑誌
出版物タイトル(別表記)
Journal of Okayama Medical Association
94巻
1-2号
出版者
岡山医学会
出版者(別表記)
Okayama Medical Association
開始ページ
73
終了ページ
86
ISSN
0030-1558
NCID
AN00032489
資料タイプ
学術雑誌論文
オフィシャル URL
https://www.jstage.jst.go.jp/article/joma1947/94/1-2/94_1-2_73/_article/-char/ja/
関連URL
http://www.okayama-u.ac.jp/user/oma/index.html
言語
Japanese
著作権者
岡山医学会
論文のバージョン
publisher
査読
有り
Eprints Journal Name
joma