The three most common indications for Thiersch grafting are for skin repair following (1) a canalplasty
for the treatment of congenital external auditory canal atresia or intractable otitis externa, (2) a canal-wall-down mastoidectomy, and (3) a tympanoplasty with a moderate to large canalplasty
Table 3: Concurrent procedures performed Canalplasty 161 Septoplasty 6 FESS 3 Adenoidectomy 3 Table 4: Size of perforation SIZE OF PERFORATION NO.
Comparitive study of hearing improvement in type 1 tympanoplasty with and without canalplasty. Indian Journal of Otolaryngology and Head and Neck Surgery 2008 Oct-Dec; 60 (4): 341-344.
In cases of severe canal stenosis, wide canalplasty
can be performed.
The technique chosen is generally based on the extent of the disease and the surgeon's preference, and it ranges from canalplasty with skin grafting for lesions confined to E AC, to canalplasty or canal-wall-up mastoidectomy with reconstruction of canal defects for lesions involving mastoid cells, to canal-wall-down mastoidectomy for lesions with large wall defects exhibiting mastoid erosion.
We subsequently performed canalplasty with EAC defect reconstruction using fragments of conchal cartilage.
They cover otosclerosis surgery; chronic ear disease surgery; canalplasty
; cholesterol granuloma; cerebral spinal fluid leaks, encephalocele,or pseudo-meningocele; posterior fossa tumor surgery; glomus tumors; hypoglossal foramen and foreman magnum tumors; endolymphatic sac tumors; carcinoma involving the temporal bone; implantable middle ear devices; cochlear implant surgery; auditory brainstem implant; surgery for Meniere disease; repair of superior semicircular canal dehiscence; surgery for benign positional postural vertigo; facial decompression; and facial nerve repair and facial palsy rehabilitation.
Stapes fixation, cholesteatoma involvement of the malleus, ineligible mucosal inflammation, wet middle ear, and accompanying bony canalplasty
were the intraoperative exclusion criteria for this study and were checked from operation notes.
Importantly, no significant difference was observed in BC hearing results pre- and postoperatively between 500 and 4,000 Hz, which would suggest that use of a powered drill during canalplasty is safe.
In conclusion, no correlation between high-frequency hearing loss and use of a powered drill for canalplasty during type I tympanoplasty was found in this pediatric population.
Canalplasty for chronic intractable external otitis and keratosis obturans Otolaryngology, Head and Neck Surgery.
Canalplasty can be attempted in recurrent cases of keratosis obturans with promising results.