Otosclerosis

adult ampulla annular ligament appearance areas aural capsule Autopsy bone picture canal capsule cartilage lacuna cartilage rests cartilaginous cavity cementum chondroblasts Cisterna cochlea columella connective tissue degeneration differentiation drum membrane ductus Dystrophic bone Enchondral bone enchondral layer endosteal layer epithelium fenestrae ovalis fetal bone fibers fibrous marrow fissula ante fenestram focus footplate formation ganglion genes Gustaf Retzius Haversian Human fetus internal auditory meatus labyrinthine capsule lagena lamellar bone macula marrow spaces matrix membranous labyrinth mesenchymal cells months nerve normal ontogenesis Oscar Johnson Institute osseous dystrophy ossicle ossification osteoblasts osteocytes osteodystrophia fibrosa osteoid otic capsule otosclerosis otosclerotic bone outer oval window perichondrium periosteal layer pneumatization posterior precartilage predilection primary marrow Reference from Gustaf regression resorption reticulum round window sacculus scala secondary tympanic membrane shows skein bone stapes structure temporal bones theory tion trabeculae tympani tympanum utriculus venous stasis vesicle vestibule wall Weber Wittmaack