title: Crural attachment to promontory case report: implications for stapes development.
abstract: Understanding of the embryologic origin of the stapes remains controversial. Theories diverge upon whether the entirety of the stapes arises from a single source versus the footplate and suprastructure arising from distinct sources. A 12-year-old boy with left-sided conductive hearing loss had computed tomography of the temporal bone, revealing an inferiorly displaced left stapes, and a nonspecific density in the left Prussak's space. Exploratory tympanotomy revealed the crura of the stapes to be attached to the promontory. The stapes footplate was located in the oval window and was mobile.
authors: Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, MA, USA. Kenneth.whittemore@childrens.harvard.edu
authors: Kenneth R
authors: KR
authors: Whittemore
authors: Jenna M
authors: JM
authors: Dargie
authors: Briana K
authors: BK
authors: Dornan
mesh_terms: D002648:Child; D018424:Cholesteatoma, Middle Ear / Q000175:diagnosis; D003937:Diagnosis, Differential; D004429:Ear Ossicles / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000196:embryology; D005500:Follow-Up Studies; D006314:Hearing Loss, Conductive / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery*; D006801:Humans; D008297:Male; D038781:Otoscopy / Q000379:methods; D018570:Risk Assessment; D013199:Stapes / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000196:embryology*; D013201:Stapes Surgery / Q000379:methods*; D013701:Temporal Bone / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome; D014432:Tympanic Membrane / Q000601:surgery