[Does the material of stapes prosthesis influence hearing improvement in stapes surgery--retrospective analysis of 350 cases].
OBJECTIVE
Retrospective analysis of the post-op hearing results in stapes surgery using different types of materials for stapes prosthesis after 12 months follow up.


METHODS
The total number of 350 otosclerosis patients who underwent surgical treatment at the Otosurgery Department, Medical University of Lodz from 1980-2002. All patients included in the study were divided into 4 groups: group 1 (N=54)--Portmann's method interposition, group 2 (N=160)--stapes replaced with the Shea-type prosthesis, group 3 (N=60)--platinum wire prosthesis (Zini-type), group 4 (N=76)--teflon-piston operation (Fisch-type).


RESULTS
The 12 months post-op mean value for air-bone gap (500, 1000, 2000 Hz) presented the following values: group 1-19 dB, group 2-15.9 dB, group 3-18.4 dB, group 4-13.5 dB. The percentage of patients with the mean air-bone gap value of 15 dB or less (500, 1000, 2000 Hz) has the following values in each group: group 1-75%, group 2-81.3%, group 3-83%, group 4-85%.


CONCLUSIONS
12 months post-op hearing results compared between the 4 studied groups showed statistically not significant differences. Our experience with teflon-piston prosthesis shows the lowest post-op mean value of the air-bone gap.
Katedra Otolaryngologii Uniwersytetu Medycznego w Łodzi. durko@csk.umed.lodz.pl
Marcin
M
Durko
Anna
A
Pajor
Andrzej
A
Jankowski
Ramzes
R
Stańczyk
Magdalena
M
Józefowicz-Korczyńska
Wioletta
W
Pietruszewska
Katarzyna
K
Starska
Tomasz
T
Durko
D000328:Adult; D001309:Auditory Threshold; D001705:Bioprosthesis / Q000145:classification; D005260:Female; D005500:Follow-Up Studies; D006309:Hearing; D006801:Humans; D008297:Male; D008422:Materials Testing / Q000706:statistics & numerical data*; D008670:Metals; D008875:Middle Aged; D009998:Ossicular Prosthesis / Q000145:classification*; D010040:Otosclerosis / Q000453:epidemiology / Q000601:surgery*; D010984:Platinum; D011044:Poland / Q000453:epidemiology; D011138:Polytetrafluoroethylene; D011474:Prosthesis Design / Q000145:classification*; D012189:Retrospective Studies; D013201:Stapes Surgery / Q000295:instrumentation* / Q000706:statistics & numerical data; D016896:Treatment Outcome
D008670:Metals; D010984:Platinum; D011138:Polytetrafluoroethylene
Wpływ rodzaju protezki strzemiqczka na stopień poprawy słuchu w chirurgii strzemiaczka--analiza retrospektywna 350 przypadków.