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目的观察中耳乳突手术中应用自体乳突皮质骨粉重建外耳道的疗效。方法 13例(13耳)中耳炎患者,其中胆脂瘤中耳炎8例,慢性化脓性中耳炎5例,行开放式乳突病变切除+鼓室成形术9例,行改良乳突根治术4例,均应用自体乳突皮质骨粉重建外耳道。观察术后外耳道的形态和功能及听力变化。结果本组平均干耳时间为术后(32.0±6.5)d。随访4~16个月,术后外耳道形态基本正常,无须经常清理结痂。4例改良乳突根治术后听力无变化。9例鼓室成形术后平均气骨导差为(21.3±14.7)dB听力级(HL),术前平均气骨导差(36.3±11.9)dBHL,手术前后比较差异有统计学意义(P<0.05)。结论在中耳乳突手术中应用自体乳突皮质骨粉重建外耳道,取材方便,效果满意。
Objective To observe the curative effect of reconstruction of external auditory canal with autologous mastoid cortical bone powder in middle ear mastoid process. Methods Thirteen patients (13 ears) with otitis media, including 8 cases of cholesteatoma otitis media and 5 cases of chronic suppurative otitis media, were treated with open mastoidectomy + tympanoplasty in 9 cases and modified mastoidectomy in 4 cases. Self mastoid cortical bone powder reconstruction of external auditory canal. Observe the morphology and function of external auditory canal and hearing changes. Results The average dry ear time in this group was (32.0 ± 6.5) days after operation. After 4 to 16 months of follow-up, the morphology of the external auditory meatus was normal and no scabbing was necessary. There was no change in hearing after 4 cases of radical mastoidectomy. The mean airway deformity after the tympanoplasty in 9 patients was (21.3 ± 14.7) dB in hearing level (HL) and 36.3 ± 11.9 dBHL in preoperative. The difference was statistically significant before and after operation (P <0.05) ). Conclusions The application of autologous mastoid cortical bone powder in the reconstruction of the middle ear mastoid process has the advantages of convenient material drawing and satisfactory results.