Abstract THERE ARE several anatomic variations in, or near, the oval window of the temporal bone of major significance to the otologic surgeon. The variants to be considered here are dehiscence of the fallopian canal adjacent to the oval window, distance of the utricle from medial surface of the stapedial footplate, and fibrous connections between the utricle and the footplate. Materials and Methods This report is based on examinations of 200 serially sectioned human temporal bones (100 pairs) in the Otological Research Laboratory of the Johns Hopkins Hospital. The bones were sectioned vertically in all instances. The temporal bones were from consecutive autopsies, but some selection and deletion of prepared specimens was necessary to insure a pair of bones without significant distortion. The temporal bones were sectioned at 24μ thickness, and every tenth section stained with hematoxylin and eosin and mounted.The fallopian canal was examined microscopically along its course References 1. Denecke, H.J.: Operationslehre , ed 2, Berlin: Springer Verlag, 1953, vol 5, p 79. 2. Beddard, D., and Saunders, W.H.: Congenital Defects in the Fallopian Canal , Laryngoscope 72:112, 1962.Crossref 3. Guild, S.R.: Natural Absence of Part of Bony Wall of the Facial Canal , Laryngoscope 59:668, 1949.Crossref 4. Hough, J.V.D.: Malformation and Anatomical Variations Seen in the Middle Ear During the Operation for Mobilization of the Stapes , Laryngoscope 68:1337, 1958.Crossref 5. Derlacki, E.L.; Shambaugh, G.E., Jr.; and Harrison, W.H.: The Evolution of a Stapes Mobilization Technique , Laryngoscope 67:420, 1957.Crossref 6. Cawthorne, T.: Membranous Labyrinthectomy Via the Oval Window for Ménière's Disease , J Laryng Otol 71:524, 1957.Crossref 7. Kaplan, J.: Congenital Dehiscence of the Fallopian Canal in Middle Ear Surgery , Arch Otolaryng 72:197, 1960.Crossref 8. Anson, B.J.; Harper, D.G.; and Warpeha, R.L.: Surgical Anatomy of Facial Canal and Facial Nerve , Ann Otol 72:713, 1963. 9. Anson, B.J., et al: II. Anatomic Considerations , Laryngoscope 75:1497, 1965.Crossref 10. Bast, T.H., and Anson, B.J.: The Temporal Bone and the Ear , Springfield, Ill: Charles C Thomas Publisher, 1949. 11. Anson, B.J., and Bast, T.H.: Anatomical Structure of the Stapes and Relation of the Stapedial Footplate to Vital Parts of the Otic Labyrinth , Ann Otol 67:389, 1958. 12. Beck, C., and Bader, J.: Ein Beitrag zur feineren Anatomie des menschlichen Innenohres Zusammengefasst dargestellt in einem neuen Labyrinthmodell , Arch Ohr Nas Kehlkopfheilk 181:245, 1963.Crossref 13. Fick, I.A. van N.: Ménière's Disease: Aetiology and a New Surgical Approach: Sacculotomy , J Laryng Otol 80:288, 1966.Crossref 14. Anson, B.J. ed.: Morris' Human Anatomy , ed 12, New York: McGraw-Hill, Book Co., Inc., 1966, p 1171-1227, (pt 2) .
Archives of Otolaryngology – American Medical Association
Published: Jan 1, 1968
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