The implantation of Bonebridge in bilateral congenital malformation of external and middle ear
10.3760/cma.j.issn.1673-0860.2017.07.007
- VernacularTitle: 骨桥在双侧先天性外中耳畸形中应用的初步研究
- Author:
Shouqin ZHAO
1
;
Ran REN
1
;
Demin HAN
1
;
Yi LI
1
;
Xiaobo MA
1
;
Danni WANG
1
;
Yuling LI
1
Author Information
1. Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100730, China
- Publication Type:Journal Article
- Keywords:
Ear deformities, congenital;
Hearing loss;
Hearing aids;
Bonebridge
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2017;52(7):512-516
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the auditory efficacy of Bonebridge implantation in patients with bilateral congenital malformation of external and middle ear.
Methods:Eleven cases (6 males and 5 females) had unilateral Bonebridge implantation. The age ranged from 8 to 26 and the average age was 16.9. Seven to ten days after operation, the first fitting was undergone. In acoustic sound field, the average auditory thresholds were respectively measured for unaided ears and Bonebridge implanted ears by pure tone auditory (PTA, 0.25, 0.5, 1, 2 and 4 kHz). For the group over 12-year-old, MSTM was applied to evaluate speech discrimination score (SDS). For the other cases, MLNT was used as the test material. The auditory efficacy post Bonebridge implantation would be analyzed and evaluated by comparing the differences between unaided ears and Bonebridge implanted ears.
Results:The bone conduction audibility threshold after Bonebridge implantation was as well as the preoperative. The auditory threshold with Bonebridge aided was improved to 25-35 dB HL, when compared to that of the unaided ears in the sound field. The SDS in the group over 12-year-old was improved about 50%; the efficacy was slightly limited for the other two cases (both less than 12 years old). Statistical analysis showed that there were significant differences between unaided ears and Bonebridge implanted ears in the sound field and SDS(P<0.05).
Conclusions:The auditory efficacy of Bonebridge is significant and noticeable in patients with bilateral congenital malformation of external and middle ear. Bonebridge provides a new and effective way for patient with congenital malformation of external and middle ear to reconstruct hearing.
