a1 Department of Otolaryngology, North Staffordshire Royal Infirmary, Stoke-on-Trent, UK.
Forty cases of failed combined approach tympanoplasty were analysed. The commonest cause of failure was adhesions between the facial ridge and the tympanic membrane, causing segmental attico-mastoid malaeration in 51.3 per cent of cases followed-up continually. Other causes were, large dermoids, incomplete removal of squamous epithelium, and eustachian tube obstruction. Eustachian tube dysfunction did not appear to be a major cause of failure.
(Accepted March 10 1995)
c1 Mr T. R. Kapur, 21 Sutherland Drive Westlands, Newcastle-under-Lyme, Staffs ST5 3ND.