Results
At six months follow-up, the healing rate of tympanic membrane was 100% (80/80). The mean preoperative pure-tone average (PTA)(43.18± 14.57 dB HL)significantly decreased (27.08±9.36 dB HL) six months after the operation (P =0.002). Similarly, the mean preoperative ABG(19.05±5.72 dB HL)reduced to(9.36±3.75 dB HL) (P =0.0019) at sixth month. Major complications were not observed during follow-up.