Mid-temporal pericranial and inferiorly based periosteal flaps in mastoid obliteration.

Objective: To study the outcome of mastoid obliterations where mid-temporal pericranial flap and inferiorly based periosteal flap were used.

Study Design: A prospective longitudinal study with a minimum follow-up of 1 year.

Subjects And Methods: Between 2000 and 2005, 102 mastoid obliterations were performed on 96 patients, the majority having hydroxyapatite granules as fillers. Of these, 31 were primary obliterations and 71 were secondary obliterations. Thirty were on children under 16.

Results: Using Kaplan-Meier analysis, the percentage of ears that were free of residual cholesteatoma at 5 years was 91% (95% CI: 83.1%, 100.0%). There was no recurrent cholesteatoma. Cut-off analysis was used to study other parameters at 5 years. The 5-year otorrhea rate was zero, and 96% of the cavities became completely epithelialized. Twenty out of 24 ears were water resistant, and 50% had air-bone gaps of 20 dB or better.

Conclusion: The outcome of this technique compares favorably to other reports.