日本人耳小骨におけるキヌタ骨切こんｉｎｃｕｓ　ｎｏｔｃｈおよびアブミ骨りょうｃｒｉｓｔａ　ｓｔａｐｅｄｉｓの観察

DOI

書誌事項

タイトル別名
  • OBSERVATIONS ON THE INCUS NOTCH AND THE CR ISTA STAPEDIS IN AUDITORY OSSICLES

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説明

The incus notch and the crista stapedis in auditory ossicles were investigated morphologically. Of 47 incudes the notch was present in 22 (47%). It was located in the inferior border of the short process of the incus, near the apex. Its depth and extent were variable. The medium degree of notch was most frequently found in the present series of ossicles (77%). Scanning electron microscopy revealed that a part of the posterior incudal ligament was anchored deeply into the notch of the incus. This suggests that the notch may possibly function to tighten the posterior incudal ligament to the incus.<BR>The crista stapedis was detectable in 9 of 32 stapeses (28%). It is an inconstant ridge passing between the crura on the tympanic surface of the stapedial base. Marked crest formation was extremely rare. In the mared degree of the notch, however, it was so large and high that the shape of the stapes resembed that of a fetus. This crest may be a remnant of a once-complete layer of the periosteal bone on the obturator surface of the base. Clinical and embryological significances of the incus notch and the crista stapedis are briefly discussed.

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詳細情報 詳細情報について

  • CRID
    1390282679930068224
  • NII論文ID
    130003974156
  • DOI
    10.11453/orltokyo1958.26.129
  • ISSN
    18836429
    03869687
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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