Tetanus is caused by an infection with the bacterium Clostridium tetani, which is commonly found in soil, saliva, dust, and manure. The bacteria generally enter through a break in the skin such as a cut or puncture wound by a contaminated object.
Confidence votes 20.9K. Types of ear surgery include stapedectomy, tympanoplasty, myringotomy and ear tube surgery, ear surgery to repair a perforated eardrum, cochlear implants, and tumor removal.  Minor edit? Save Cancel.
When the ear is filled with scar tissue or when all ear bones have been destroyed it may be necessary to perform the operation in two stages. During the first stage of surgery a piece of stiff plastic is inserted to allow more normal hearing without scar tissue. At the second surgery the plastic may be removed.