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open access

Vol 79, No 2 (2020)
Review article
Submitted: 2019-04-01
Accepted: 2019-07-07
Published online: 2019-07-12
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Körner’s septum (petrosquamosal lamina): the anatomical variant or clinical problem?

T. T. Przewoźny1, A. Kosiński2, K. Markiet3, W. Sierszeń1, J. Kuczkowski1, J. Kuryłowicz1, A. Skorek1
DOI: 10.5603/FM.a2019.0079
·
Pubmed: 31448811
·
Folia Morphol 2020;79(2):205-210.
Affiliations
  1. Department of Otolaryngology, Medical University of Gdansk, Smoluchowskiego 17 Str., 80-214 Gdańsk, Poland
  2. Department of Clinical Anatomy, Medical University of Gdansk, Poland
  3. 2nd Department of Radiology, Medical University of Gdansk, Smoluchowskiego 17 Str., 80-214 Gdańsk, Poland

open access

Vol 79, No 2 (2020)
REVIEW ARTICLES
Submitted: 2019-04-01
Accepted: 2019-07-07
Published online: 2019-07-12

Abstract

Körner’s septum (KS) or petrosquamosal lamina is a bony lamina beginning at the articular fossa, extending above the middle ear, and running inferiorly and laterally to the facial nerve canal as it proceeds to the mastoid apex. This septum marks the junction of petrous and squamous bones. The paper presents details of the anatomical structure of KS, which is most often present at the level of the head of the malleus and/or the anterior semicircular canal. Attention is paid to embryological aspects of temporal bone development that lead to the formation of KS. Two imaging techniques most frequently used to diagnose KS are described, high resolution computed tomography (HRCT) and cone-beam computed tomography. Also presented is a case report of a 6-year-old patient suffering from chronic otitis media who developed a cholesteatoma due to presence of KS, illustrated with HRCT images and intraoperative capture. The authors describe diagnostic difficulties associated with this anatomical variant in the middle ear. The article also discusses the more frequent occurrence of this clinical problem in ears operated on due to chronic inflammation, retraction pocket or tympanosclerosis in comparison to healthy ears.

Abstract

Körner’s septum (KS) or petrosquamosal lamina is a bony lamina beginning at the articular fossa, extending above the middle ear, and running inferiorly and laterally to the facial nerve canal as it proceeds to the mastoid apex. This septum marks the junction of petrous and squamous bones. The paper presents details of the anatomical structure of KS, which is most often present at the level of the head of the malleus and/or the anterior semicircular canal. Attention is paid to embryological aspects of temporal bone development that lead to the formation of KS. Two imaging techniques most frequently used to diagnose KS are described, high resolution computed tomography (HRCT) and cone-beam computed tomography. Also presented is a case report of a 6-year-old patient suffering from chronic otitis media who developed a cholesteatoma due to presence of KS, illustrated with HRCT images and intraoperative capture. The authors describe diagnostic difficulties associated with this anatomical variant in the middle ear. The article also discusses the more frequent occurrence of this clinical problem in ears operated on due to chronic inflammation, retraction pocket or tympanosclerosis in comparison to healthy ears.

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Keywords

Körner’s septum, petrosquamosal lamina, temporal bone, otosurgery

About this article
Title

Körner’s septum (petrosquamosal lamina): the anatomical variant or clinical problem?

Journal

Folia Morphologica

Issue

Vol 79, No 2 (2020)

Article type

Review article

Pages

205-210

Published online

2019-07-12

Page views

1741

Article views/downloads

1934

DOI

10.5603/FM.a2019.0079

Pubmed

31448811

Bibliographic record

Folia Morphol 2020;79(2):205-210.

Keywords

Körner’s septum
petrosquamosal lamina
temporal bone
otosurgery

Authors

T. T. Przewoźny
A. Kosiński
K. Markiet
W. Sierszeń
J. Kuczkowski
J. Kuryłowicz
A. Skorek

References (19)
  1. Aslan A, Mutlu C, Celik O, et al. Surgical implications of anatomical landmarks on the lateral surface of the mastoid bone. Surg Radiol Anat. 2004; 26(4): 263–267.
    CrossRefPubMed
  2. Avci S, Ergun T, Aydin E, et al. Sex differences in adult craniofacial parameters. Surg Radiol Anat. 2015; 37(9): 1069–1078.
    CrossRefPubMed
  3. Avci S, Ergun T, Aydin E, et al. Craniofacial measures of chronic otitis media patients by 2D reformatted CT. Clin Anat. 2010; 23(4): 374–385.
    CrossRefPubMed
  4. Göksu N, Kemaloğlu YK, Köybaşioğlu A, et al. Clinical importance of the Korner's septum. Am J Otol. 1997; 18(3): 304–306.
    PubMed
  5. Hentona H, Okubo J, Tanaka H, et al. [The volume ratio between squamosal and petrosal air cells divided by Körner's septum]. Nihon Jibiinkoka Gakkai Kaiho. 1995; 98(8): 1278–1284.
    CrossRefPubMed
  6. Karaca CT, Toros SZ, Noşeri H. Analysis of anatomic variations in temporal bone by radiology. Int Adv Otol. 2012; 8(2): 239–243.
  7. Körner O. Das Septum petrosquamosum (mastoideum) und seine klinische Bedeutung. Fortschr Hals Nasen Ohrenheilkd. 1926; 17: 137–140.
  8. Lemmerling M, De Fo, Smet B. Temporal Bone Imaging Techniques. In: Lemmerling M., De Foer B. Temporal Bone Imaging. Springer-Verlag, , Berlin Heidelberg 2015: 7–10.
  9. Leng T, Zhao S, Liu Z, et al. [Korner's septum and congenital aural atresia]. Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2005; 19(10): 436–438.
    PubMed
  10. Ozer E, Bayazit YA, Kara C, et al. Körner's septum (petrosquamosal lamina) and chronic ear disease. Surg Radiol Anat. 2004; 26(2): 118–121.
    CrossRefPubMed
  11. Penninger RT, Tavassolie TS, Carey JP. Cone-beam volumetric tomography for applications in the temporal bone. Otol Neurotol. 2011; 32(3): 453–460.
    CrossRefPubMed
  12. Proctor B, Nielsen E, Proctor C. Petrosquamosal suture and lamina. Otolaryngol Head Neck Surg. 1981; 89(3 Pt 1): 482–495.
    CrossRefPubMed
  13. Puricelli MD, Newby MD, Fishman AJ, et al. The Petrosquamous Stalactite. Otolaryngol Head Neck Surg. 2017; 156(3): 549–553.
    CrossRefPubMed
  14. Shulman A, Rock EH. Korner's (petrosquamous) septum in otology. Report of five cases. Arch Otolaryngol. 1972; 96(2): 124–129.
    CrossRefPubMed
  15. Toros SZ, Karaca CT, Habeşoğlu TE, et al. Is there a relation between mastoid aeration and Körner's septum? Eur Arch Otorhinolaryngol. 2010; 267(10): 1523–1526.
    CrossRefPubMed
  16. Virapongse C, Kirchner JC, Sasaki C, et al. Computed tomography of Körner's septum and petrosquamosal suture. Arch Otolaryngol Head Neck Surg. 1986; 112(1): 81–87.
    CrossRefPubMed
  17. Virapongse C, Rothman SL, Kier EL, et al. Computed tomographic anatomy of the temporal bone. AJR Am J Roentgenol. 1982; 139(4): 739–749.
    CrossRefPubMed
  18. Virapongse C, Sarwar M, Bhimani S, et al. Computed tomography of temporal bone pneumatization: 2. Petrosquamosal suture and septum. AJNR Am J Neuroradiol. 1985; 6(4): 561–568.
    PubMed
  19. Wojciechowski T, Skadorwa T, Drożdż A, et al. The radioanatomical assessment of the Körner's septum. Surg Radiol Anat. 2019; 41(6): 669–673.
    CrossRefPubMed

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