- Literally, the making of a window — fenestra in Latin (and fenetre in French) is a window — fenestration refers to the creation of a new opening.
* * *1. The presence of openings or fenestrae in a part. 2. Making openings in a dressing to allow inspection of the parts. 3. In dentistry, a surgical perforation of the mucoperiosteum and alveolar process to expose the root tip of a tooth to permit drainage of tissue exudate.- optic nerve sheath f. the cutting of a window in the dura of the optic nerve sheath to relieve papilledema and prevent further loss of optic nerve fibers.- tracheal f. a surgical procedure to create an epithelialized mucocutaneous opening from the neck into the trachea.
* * *fen·es·tra·tion .fen-ə-'strā-shən n1 a) a natural or surgically created opening in a surfaceb) the presence of such openings2) the operation of cutting an opening in the bony labyrinth between the inner ear and tympanum to replace natural fenestrae that are not functional
* * *n.a surgical operation in which a new opening is formed in the bony labyrinth of the inner ear as part of the treatment of deafness due to otosclerosis. It is rarely performed today, having been superseded by stapedectomy.
* * *fen·es·tra·tion (fen″əs-traґshən) 1. the act of being perforated. 2. the presence of perforations or windows; see fenestra. 3. the surgical creation of a new opening in the labyrinth of the ear for the restoration of hearing in cases of otosclerosis; see Lempert fenestration operation, under operation.
Medical dictionary. 2011.