INTRODUCTION We describe indications and surgical technique for dividing the stapedius and tensor tympani tendons during middle ear surgery. Middle ear muscle reflexes involve contraction of the tensor tympani muscle (TTM) and stapedius muscle (SM) to increase impedance of the middle ear, and may shield the inner ear from loud, continuous nonimpact noise. Sectioning SM and TTM tendons has been ...

Temporal bone histopathological findings of two patients with trisomy 18 syndrome are described. Many of the abnormalities previously described were seen in the present cases; namely, atresia of the external auditory canal, aberrant course of the tensor tympani muscle, malformed stapes, aberrant course of the facial nerve with an obtuse angulation at the first genu and displacement of geniculat...

1. Abstract 2. Introduction 3. Morphology 3.1. Amphibian morphology 3.2. Reptile morphology 3.3. Avian morphology 3.4. Mammalian morphology 4. Neural crest origin of the skeletal elements 5. Signal mechanisms patterning neural crest contributions 6. Mesenchymal condensation 7. Chondrogenesis and osteogenesis 8. Skeletal elements: ossicles 8.1. Columella 8.2. Mouse ossicles – malleus 8.3. Incus ...

This study is based on the examination of histological sections of specimens of different ages and of adult ossicles from macerated skulls representing a wide range of taxa and aims at addressing several issues concerning the evolution of the ear ossicles in marsupials. Three-dimensional reconstructions of the ear ossicles based on histological series were done for one or more stages of Monodel...

Peroperative findings in 145 consecutive cases of chronic suppurative otitis media, operated at Civil Hospital, Karachi were recorded. The mean age was 24 years. More than half of the patients (51%) had subtotal perforations and majority had damage of more than one ossicle. Involvement of all the three ossicles was seen in 30 (40%) cases. The frequency of damaged malleus along with incus was hi...