Myringoplasties and Reconstruction of the Tympanic
Cavity Using a Silicone Sheet
Valvoda J., Hroboň M., Rambousek P., Eliáš J.
ORL oddělení Všeobecné fakultní nemocnice, Praha, přednosta doc. MUDr. M. Hroboň, CSc. |
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Summary:
The authors present an analysis of a group of 169 myringoplasties and reconstructions
of the middle ear implemented in the course of two years (1998-1999). 82 primary, simple myringoplasties were made and 41 re-myringoplasties on account of dry perforation of the tympanic mem-
brane. The third group of the evaluated operations is formed by 46 myringoplasties “complicated”
by the necessity of treatment of a pathological process in the middle ear and its reconstruction. For
plastic operations of the ear drum they use primarily usually a fascial free graft. The perichondrium
or chondroperichondrium is used more frequently in reoperations or in concurrent reconstruction
of the posterior wall of the auditory meatus. With regard to the technique of a soft transplant the
technique of a removable silicone sheet is used, which was the case in 71 (42 %) operations. It serves
above all as support of the graft, also to prevent adhesions and for restoration of the mucosa of the
middle ear. The use of the silicone sheet increases with the size of the perforation and extent of
pathological findings in the tympanic cavity. In the majority of operated ears complete primary
incorporation of the graft occurred. The final anatomical results deteriorate as a result of secondary
perforations of the neomyrinx as a result of its late trophic changes. After a 6-30-month interval
following healed ear developed (integral ear drum, unobstructed middle ear) in 63 (77 %) myringoplasties, 33 re-myringoplasties (80 %) and 38 (83 %) “complicated” myringoplasties. The authors
analyze the causes of failure in different types of operations. The decisive factor for the outcome of
myringoplasties is a correctly selected surgical technique and experience of the surgeon.
Key words:
myringoplasty, graft material, silicone sheet, results.
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