Application of Autologous Mastoid Cortical Bone in Canal Wall -down Tympanoplasty / 听力学及言语疾病杂志

ABSTRACT

Objective To investigate the clinical effects of autologous mastoid cortex in canal wall -down tympanoplasty .Methods From Jun 2015 to Jan 2016 ,40 patients with chronic suppurative otitis media were ran-domly divided into the experimental group and control group ,with 20 patients in each group .Patients in the experi-mental group were treated with autologous cortical bone on the tympanic cavity reconstruction surgery + opening tympanoplasty + mastoid cavity filling surgery ,the control group received opening tympanoplasty only .All cases were followed up for 1 year to compare postoperative dry ear and hearing improvement in the two groups .Results The dry ear rate of the experimental group was (100％ ) higher than that of the control group (70％ ) .The hearing of the two groups was significantly improved(23 .42 ± 0 .90 dB) in the experimental group ,higher than that in the control group (8 .43 ± 0 .04 dB) at 6 months after operation .Conclusion Using autologous cortical bone on the tympanic cavity reconstruction in the treatment of chronic suppurative otitis media is effective .The postoperative dry ear rate is high and the hearing improvement is excellent .