关键词: 乳突皮质骨；骨粉；鼓室成型术；乳突根治术

Abstract:

Objective  To explore the value and experience of the application of bone pate from self mastoid cortex in the micro-otosurgery． Methods  Bone pate from self mastoid cortex was applied in 46 cases of chronic suppurative otitis media and cholesteatomatons from 2007 to 2009 in our department． 19 patients were treated with radical mastoidectomy, the other 27 with tympanoplasty and mastoidectomy． During surgery，bone pate from mastoid cortex was collected by drilling using a large cutting burr， and then was used to fill the attic cell or mastoidale, and obliterate the antrum. Afterwards，the temporalis fascia was used to overlap the surface of the bone pate． Results  All patients achieved a small， dry and healthy mastoid cavity. The average time of dry ear was 6 weeks; the rate of dry ear in the three months was 95.7%（44/46）; the shape of the eardrum was normal, and no suction pocket was found in patients treated with tympanoplasty． Conclusion  Bone pate from self mastoid cortex with less rejection, easy to obtain and shape, is a kind of good repairing material in the micro-otosurgery．

Key words:  Mastoid cortex； Bone pate； Tympanoplasty； Radical mastoidectomy