A five year follow up of incus transposition in relation to the first stage tympanoplasty technique.
This study was set up, prospectively, to determine factors affecting the long-term hearing results of patients undergoing incus transposition as a second stage in ossicular reconstruction, following a successful drumhead repair in non-cholesteatoma ears. Seventy-one patients were entered into the study over five years from 1980-1985, 66 were available to be studied throughout the five year follow-up period. Nine weeks post-operatively, 74 per cent of all patients has an air-bone gap of less than 15 dB (48/66). The type of first stage procedure had a significant effect on the hearing levels in the final five year assessment. The most successful sub-group were those patients who had a cortical mastoidectomy and silastic sheeting inserted in the first staging procedure. The air-bone gap, of less than 15 dB, was maintained in 71 per cent of this group (17/24). The sub-group who had a simple myringoplasty as the primary procedure had a good initial hearing level. By five years, however, only 30 per cent of the patients had maintained the air-bone gap of less than 30 dB (3/11).
Donaldson
I
I
Dept. of Otolaryngology, Selly Oak Hospital, Birmingham.
Snow
D G
DG
D002908:Chronic Disease; D005500:Follow-Up Studies; D006309:Hearing; D006801:Humans; D007188:Incus / Q000637:transplantation*; D008416:Mastoid / Q000601:surgery; D009225:Myringoplasty; D010035:Otitis Media, Suppurative / Q000601:surgery*; D011184:Postoperative Period; D011446:Prospective Studies; D019736:Prostheses and Implants; D012826:Silicone Elastomers; D016896:Treatment Outcome; D014433:Tympanoplasty / Q000379:methods*
D012826:Silicone Elastomers