Sunday, February 3, 2008

TREATMENT OF CONDUCTIVE HEARING LOSS







One of the diseases causing conductive hearing loss is ossicular chain disruption. This may be due to some accidential injury or any disease in the middle ear like cholesteatoma which errodes the ossicles mainly incus.To treat this condition, ossiculoplasty is required in which ossicular chain is reconstructed. this is done either by refashioning the remaining ossicles or with artificial prosthesis. In refashioning, the remaining part of incus is drilled and a hole is made for stapes head and a groove is made for malleus handle and thus incus is repositioned in between malleus and stapes by refashioning it. Alternatively a cartilage graft is taken and refashioned in the similar manner between malleus and stapes. Similarly handle of mlleus can be used. In artificial prosthesis TORP (total ossicular replacement prosthesis) can be used in between drum and stapes if both incus and malleus are erroded or PORP (partial ossicular replacement prosthesis) can be used if handle of malleus is preserved. These prosthesis are made from different materials like teflon, titanium,gold etc.

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