External Auditory Canal Reconstruction and Mastoid Obliteration Using Modified Palva Flap in Canal Wall Down Mastoidectomy With Tympanoplasty
| Autor: | Jeong-Hoon Oh, Il Gye Lim, Ki-Hong Chang, Byung Guk Kim, Ji-Sun Kim |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male Canal wall down mastoidectomy medicine.medical_treatment Mastoidectomy Mastoid Surgical Flaps Auditory canal Tympanoplasty Canal wall down Medicine Humans Aged Retrospective Studies business.industry General Medicine Anatomy Middle Aged Plastic Surgery Procedures Otitis Media Treatment Outcome Otorhinolaryngology Chronic Disease Audiometry Pure-Tone Female Mastoid obliteration business Ear Canal |
| Zdroj: | The Annals of otology, rhinology, and laryngology. 128(6_suppl) |
| ISSN: | 1943-572X |
| Popis: | Objective: To evaluate the effectiveness of a modified Palva flap used for external auditory canal reconstruction and mastoid obliteration in canal wall down mastoidectomy. Methods: We retrospectively analyzed patients who underwent canal wall down mastoidectomy with tympanoplasty using modified Palva flap. All patients underwent pure tone audiometry and temporal bone computed tomography (CT) before surgery, and the same tests were performed in the first year after surgery. The external auditory canal volumes were calculated by summing the areas of each section selected in temporal bone CT. For each patient, the ratio of external auditory canal volume was calculated from CT taken before and after surgery. Results: The mean of external auditory canal volume after canal wall down with a modified Palva flap was about 1.4 times larger than before surgery. The modified Palva flap is effective for the reconstruction of the external auditory canal. Both pure tone audiometry level and air-bone gap showed statistically significant improvement after surgery ( Ps = .001 and .002, respectively). Conclusions: The external auditory canal volume slightly increased, but the status of mastoid obliteration was well maintained 1 year after surgery. The modified Palva flap used in this study is an easy and effective method in external auditory canal reconstruction and mastoid obliteration. |
| Databáze: | OpenAIRE |
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