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Labyrinthine Otosclerosis and Sensorineural Deafness: Pathologic Findings of the Spiral Ligament

Labyrinthine Otosclerosis and Sensorineural Deafness: Pathologic Findings of the Spiral Ligament Abstract In severe labyrinthine otosclerosis, spiral ligament changes occur predominantly adjacent to the stria vascularis, and consist of a decrease or loss of the capillary-perilymph system. It is suggested that this results in increased concentrations of metabolic products in the cochlear fluids that can no longer be absorbed effectively. If vascular shunts form they might represent collateral channels, with the flow of blood from the cochlea into the otosclerotic focus, bypassing the deficient capillary network in the spiral ligament. The zone of dense collagenization is described as a widening of the soft tissue endosteum of the cochlear capsule due to erosion of the bone, with the bone surface now set further back. This may result in greater mobility or loosening of the suspension mechanism of the basilar membrane. References 1. Schuknecht HF, Gross CW: Otosclerosis and the inner ear . Ann Otol Rhinol Laryngol 75:423-435, 1966. 2. Nager GT: Sensorineural deafness and otosclerosis . Ann Otol Rhinol Laryngol 75:481-511, 1966. 3. Lindsay JR, Beal DD: Sensorineural deafness in otosclerosis . Ann Otol Rhinol Laryngol 75:436-457, 1966. 4. Allam AF: Pathology of the human spiral ligament . J Laryngol Otol 84:765-779, 1970.Crossref 5. Johnsson LG, Hawkins Jr JE; Vascular changes in the human inner ear associated with aging . Ann Otol Rhinol Laryngol 81:364-376, 1972. 6. Masuda Y, Sando I, Hemenway WG: Perilymphatic communication routes in guinea pig cochlea . Arch Otolaryngol 94:240-245, 1971.Crossref 7. Takahashi T, Kimura RS: The ultrastructure of the spiral ligament in the rhesus monkey . Acta Otolaryngol (Stockh) 69:46-60, 1970.Crossref 8. Schindler K, Schneider EA, Wüllstein HL: Vergleichende Bestimmung Einiger Electrolyte und Organischer Substanzen in der Perilymphe Otosklerosekranker Patienten . Acta Otolaryngol (Stockh) 59:309-319, 1965.Crossref 9. Rüedi L, Sanz MC, Fisch U: Untersuchung der Perilymph nach Stapedektomie in Otosklerosefällen . Acta Otolaryngol (Stockh) 59:289-308, 1965.Crossref 10. Rüedi L, Spoendlin H: Pathogenesis of sensorineural deafness in otosclerosis . Ann Otol Rhinol Laryngol 75:525-552, 1966. 11. Kelemen G, Linthicum Jr FH: Labyrinthine otosclerosis . Acta Otolaryng [Suppl] (Stockh) 253:1-68, 1969. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

Labyrinthine Otosclerosis and Sensorineural Deafness: Pathologic Findings of the Spiral Ligament

Archives of Otolaryngology , Volume 101 (7) – Jul 1, 1975

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References (15)

Publisher
American Medical Association
Copyright
Copyright © 1975 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1975.00780360038008
Publisher site
See Article on Publisher Site

Abstract

Abstract In severe labyrinthine otosclerosis, spiral ligament changes occur predominantly adjacent to the stria vascularis, and consist of a decrease or loss of the capillary-perilymph system. It is suggested that this results in increased concentrations of metabolic products in the cochlear fluids that can no longer be absorbed effectively. If vascular shunts form they might represent collateral channels, with the flow of blood from the cochlea into the otosclerotic focus, bypassing the deficient capillary network in the spiral ligament. The zone of dense collagenization is described as a widening of the soft tissue endosteum of the cochlear capsule due to erosion of the bone, with the bone surface now set further back. This may result in greater mobility or loosening of the suspension mechanism of the basilar membrane. References 1. Schuknecht HF, Gross CW: Otosclerosis and the inner ear . Ann Otol Rhinol Laryngol 75:423-435, 1966. 2. Nager GT: Sensorineural deafness and otosclerosis . Ann Otol Rhinol Laryngol 75:481-511, 1966. 3. Lindsay JR, Beal DD: Sensorineural deafness in otosclerosis . Ann Otol Rhinol Laryngol 75:436-457, 1966. 4. Allam AF: Pathology of the human spiral ligament . J Laryngol Otol 84:765-779, 1970.Crossref 5. Johnsson LG, Hawkins Jr JE; Vascular changes in the human inner ear associated with aging . Ann Otol Rhinol Laryngol 81:364-376, 1972. 6. Masuda Y, Sando I, Hemenway WG: Perilymphatic communication routes in guinea pig cochlea . Arch Otolaryngol 94:240-245, 1971.Crossref 7. Takahashi T, Kimura RS: The ultrastructure of the spiral ligament in the rhesus monkey . Acta Otolaryngol (Stockh) 69:46-60, 1970.Crossref 8. Schindler K, Schneider EA, Wüllstein HL: Vergleichende Bestimmung Einiger Electrolyte und Organischer Substanzen in der Perilymphe Otosklerosekranker Patienten . Acta Otolaryngol (Stockh) 59:309-319, 1965.Crossref 9. Rüedi L, Sanz MC, Fisch U: Untersuchung der Perilymph nach Stapedektomie in Otosklerosefällen . Acta Otolaryngol (Stockh) 59:289-308, 1965.Crossref 10. Rüedi L, Spoendlin H: Pathogenesis of sensorineural deafness in otosclerosis . Ann Otol Rhinol Laryngol 75:525-552, 1966. 11. Kelemen G, Linthicum Jr FH: Labyrinthine otosclerosis . Acta Otolaryng [Suppl] (Stockh) 253:1-68, 1969.

Journal

Archives of OtolaryngologyAmerican Medical Association

Published: Jul 1, 1975

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