The lower border of the zygomatic arch could be a better landmark for the middle fossa dura: Cadaveric dissection study
| Autor: | Mohamed S. Hasaballah, Ossama Hamid, Tarek Abdel Hamid Hamdy |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
musculoskeletal diseases
business.industry medicine.medical_treatment Supramastoid crest Mastoidectomy Zygomatic arch Anatomy musculoskeletal system Cadaveric study Middle fossa nervous system diseases medicine.anatomical_structure stomatognathic system Temporal bone Mastoid antrum medicine Lower border General Materials Science Dura Cadaveric spasm business |
| Zdroj: | Egyptian Journal of Ear, Nose, Throat and Allied Sciences. 15:177-181 |
| ISSN: | 2090-0740 |
| DOI: | 10.1016/j.ejenta.2014.06.004 |
| Popis: | Background Dural injury and CSF otorrhea is a serious complication during mastoidectomy especially in low level dura. Objectives Aim of the study is to determine a reliable landmark for the middle fossa dura to minimize risk of dural injury and CSF otorrhea during mastoidectomy. By answering the question which is considered as a more fixed landmark for the dura; the supramastoid crest or the lower border of the zygomatic arch? Methods A cadaveric study was done on 204 temporal bone specimens in the temporal bone lab at the Ain Shams University Specialized Hospital. A correlation between the level of the supramastoid crest and the level of the zygomatic arch was done. A correlation between the level of the dura and the level of the supramastoid crest in the area of mastoid antrum was done. A correlation between the level of the dura and the level of the zygomatic arch was done. Results In 20.6% of specimens, the dura lies at a lower level than the level of the supramastoid crest but in 2.9% of specimens the dura lies at a lower level than the lower border of the zygomatic arch. Conclusion It is better to consider the lower border of the zygomatic arch as a reliable landmark of the middle fossa dura in the area of the antrum than to consider the supramastoid crest as a landmark for the dura. It is better to consider imaginary line directed posteriorly from the lower border of the zygomatic arch as a superior limb of the Macewen triangle. |
| Databáze: | OpenAIRE |
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