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    Mastoid cortex defects resulting from mastoidectomy surgery can rarely lead to negative sequelae, including unsightly post-auricular depression and discomfort. This study sought to evaluate the use of hydroxyapatite cement (HAC) to reconstruct mastoidectomy cortex defects. Retrospective chart review was undertaken for all patients that underwent reconstruction of the mastoid cortex using HAC at a single tertiary medical center between 2013 and 2019. Collected data included demographics, indications for mastoidectomy, complications, and associated symptom status. Twenty-nine patients that underwent mastoid cortex repair using HAC were included, and ten of these underwent mastoid revision in a secondary procedure to reconstruct the mastoid cortex with a specific goal to eliminate negative signs and symptoms. There were no associated postoperative complications and no instances of post-auricular depression following repair. All cases of secondary reconstruction resolved the primary signs and symptoms that prompted mastoid revision. HAC mastoid cortex reconstruction may be a safe and effective method to resolve negative sequelae resulting from previous mastoidectomy defects. Also, upfront HAC mastoid cortex reconstruction appears viable in select instances as an option to prevent potential future complications.


    Julia Marie Naman Thomas, Michael Brian Gluth. Reconstruction of Mastoid Cortex Defects with Hydroxyapatite Cement for Negative Sequelae of Mastoidectomy. The Annals of otology, rhinology, and laryngology. 2021 Apr;130(4):338-342

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    PMID: 32819142

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