Abstract
The results of tympanoplasty of 620 cases operated on from 1964 to 1974 (series K) and of 229 cases operated on from 1977 to 1980 (series M) were studied. The cases in which the postoperative air bone gap is smaller than 30 dB is judged to be successful.
In simple otitis media, the success rate for hearing and otorrhea was 91% in the series M and 75% in the series K. As the success rate in the series K had shown over 90% after 1970, it would seem reasonable to assume that the modern tympanopalsty had been consummated at that time.
One of the unsettled problems is the discouraging result for adhesive otitis media. The success rate in the series K was 41% and that in the series M was 44%. There could not be found any progress in the results of tympanoplasty for this disease during 1964 and 1980. The modern tympanoplasty seems to be unavailable for this condition.
The other problem is the poor results in type N tympanoplasty for all kinds of middle ear diseases. The success rate in both serieses are 27% and 24% respectively. To resolve this difficulty the use of TORP, PORP or homograft should be attempted.
