…Single paralysis caused by peripheral nerve damage is often caused by trauma, inflammation, or compression, and since only the muscles controlled by the damaged nerve suffer from flaccid motor paralysis, each type of paralysis has its own characteristic appearance. With radial nerve paralysis, the wrist and fingers cannot be straightened, resulting in a drop hand, and with median nerve paralysis, the thumb cannot be opposed to the other fingers, resulting in the thenar eminence becoming flattened and forming an ape hand. With ulnar nerve paralysis, the tips of the ring finger and little finger cannot be straightened. … *Some of the terminology that mentions "drop hand" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…末梢神経損傷による単麻痺は,外傷や炎症,圧迫によって生ずることが多く,損傷を受けた神経により支配される筋肉にのみ弛緩性の運動麻痺を生ずるため,それぞれ特徴的な麻痺の様相を呈する。橈骨(とうこつ)神経麻痺では,手首や手指をまっすぐに伸ばすことができなくなり,垂れ手drop handを生じ,正中神経麻痺では,母指を他の指に対立させることができなくなり,母指球が平たん化して猿手ape handの形となる。また尺骨神経麻痺では,薬指と小指の先をまっすぐに伸ばすことができなくなる。… ※「drop hand」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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