Learning Objectives: TBC

The reconstruction of the ossicular chain has the goal to connect the vibrating tympanic membrane with the inner ear via the stapes. Two aspects have to be considered: Firstly the Hi-Fi sound transport. For this purpose, the prosthesis has to be anchored tightly to the vibrating structures in order to avoid a loose contact. Any soft tissue in the gap between the prosthesis and the vibrating structures will reduce the energy transmission due to its damping effect. Secondly, the prosthesis has to be stabilized against a displacement by static forces, like atmospheric pressure variations, scar tissue traction, tympanic membrane retraction etc. Simple water-adhesion is not solid enough for the stabilization of the prosthesis against these forces. Therefore, new designs for a more stable attachment are necessary. They must not only guarantee a stable positioning, but, especially in cases of cholesteatoma surgery with its high risk of rezidives, an easy removing must be possible, to reduce the risk of a stapes’ luxation.