4.1 Passive prostheses (cont'd)

but

• Results are variable, with surprisingly good performance of some ears after surgery and surprisingly poor performance of others.
• Closure of air-bone gap to within 20 dB in 70-80% of cases is considered to be good.

There has been little systematic analysis of mechanical performance.

E.g., Slater et al., 1997; Stupp et al., 1999

BMDE-501 Modelling middle-ear mechanics

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