(n.) A little bone; as, the auditory ossicles in the tympanum of the ear.
(n.) One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes.
Example Sentences:
(1) The second, the normal tubercle for insertion of the transverse ligament of the atlas, may look like a separate ossicle or a chip fracture.
(2) Each mastoid and epitympanum was extensively involved with chronically inflamed tissue which surrounded the ossicles and chorda tympani nerve.
(3) A case is presented in which an ossicle was evaluated acutely.
(4) A review of arthroscopic, radiographic, and clinical data of all patients undergoing ankle arthroscopy at our center provided the following diagnoses: talar dome osteochondral fractures, loose bodies, accessory ossicles, talar dome cyst with loose bodies, and chronic synovitis.
(5) Tomography of the petrous bones showed, in both cases, an upward tilt of the long axes of the bones including their auditory canals, generalized sclerosis of the petrous pyramids and enlargement of the ossicles.
(6) X-ray powder diagrams of normal ossicles were shown as a granular hydroxyapatite.
(7) There was a profound reduction in the ability of marrow to generate ossicles when transplanted under the kidney capsule as a result of the administration of either 224Ra or 239Pu, with only transient recoveries from the effects of 239Pu at 4 days and at 3 months after injection.
(8) The position, displacement and phase angle of the rotation axis of the ossicles was calculated based on the displacement and phase angle of the umbo, malleus head and lenticular process.
(9) Ossicular mobility was assessed by direct coupling of a piezoelectric ceramic vibrator to the ossicles during middle ear surgery.
(10) Increase in size of the auditory ossicles was stated to occur unevenly, every bone having certain periods of the most intensive growth.
(11) This restricted distribution of tenascin may be important in the morphogenesis of scleral papillae and scleral ossicles.
(12) Particular care should be taken with those who have both atlantoaxial instability and odontoid hypoplasia or accessory ossicles as they are at particular risk of spinal cord damage.
(13) The valve ossicle resembles that of Parechinus in its triangular valve shape and open blade form, contrasting with Echinus in these features.
(14) The ossicles were nearly always present but deformed.
(15) Two cases of ossicles in human menisci are added to the list of 18 previously reported cases.
(16) In the treatment of the various malformations of the external and middle ear (atresia of the bony canal, malformed ossicles, reduced volume of the middle ear in varying degrees, atypical course of the facial nerve), the indirect approach to the middle ear via the antrum appears to be the safest operative procedure for a tympanoplasty in cases of congenital atresia.
(17) The purpose of this study is to investigate the differences in the destruction of ossicles in chronic ear disease caused solely (monoinfection) by one of the most common three bacteria, namely Staphylococcus aureus, Pseudomonas aeruginosa or Proteus strain.
(18) We present four patients with meniscal ossicles associated with a longitudinal tear of the medial meniscus.
(19) They recorded an auditory gain in more than half the patients (early: PORP 97%, TORP 73%, piston 52%; plasty transplants of ossicles obtained from subjects who died accidentallyĕ For preserfic Council of the Ministry of Health, Czech Socialist Republic, recommended, based on the clinical tests, the manufacture of silastic prostheses of the middle ear.
(20) A hypothesis is developed to the effect that the movement of the ossicles, necessary for lubrification and nutrition of the hyaline cartilage, is maintained by the two middle-ear muscles.
Stapes
Definition:
(n.) The innermost of the ossicles of the ear; the stirrup, or stirrup bone; -- so called from its form. See Illust. of Ear.
Example Sentences:
(1) Comparison of developmental series of D. merriami and T. bottae revealed that the decline of the artery in the latter species is preceded by a greater degree of arterial coarctation, or narrowing, as it passes though the developing stapes.
(2) The solution of these differential equations gives the velocity of the basilar membrane and hence other related quantities, e.g., displacement, pressure, driving-point impedance at the stapes.
(3) A pre-operative diagnosis of otosclerosis was made but at tympanotomy, the stapes crura in each ear was found to be disconnected from the footplate, the ossicular chain being otherwise normal.
(4) Unfortunately, both the malleus and the stapes have to be in good position to use this type of reconstruction making it much less common than other forms of ossiculoplasty.
(5) The leak was observed to be coming from a defect in the stapes footplate, and it was controlled by firmly packing the inner ear vestibule with muscle.
(6) Whereas a simple tympanoplasty could cure a localized pearl, typically anterosuperior in the mesotympanum, the stapes is fast eroded (7 cases) if progression goes on.
(7) Primitively, vibrations reached the stapes mainly via the anterior hyoid cornu, but in dicynodonts, therocephalians, and cynodants vibrations passed mainly or exclusively from mandible to quadrate to stapes and the reflected lamina was a component of the eardrum.
(8) In ten cases the stapes footplate was found totally fixed, with histological verification of the diagnosis of otosclerosis.
(9) Stapes gusher sometimes occurs at the moment the vestibule is opened.
(10) These statistics provide our practice with a realistic prognosis when discussing revision stapes surgery with the individual surgical candidate.
(11) At operation, the tumour was found to have eroded the stapes.
(12) Tissue characteristics of this laser energy should permit the vaporization of the stapes footplate or oval window soft tissue without thermal effect to the vestibule and without passing through the perilymph to damage the delicate structures of the inner ear.
(13) Further research is needed to evaluate this type of stapes fixation.
(14) The stapes is assigned the highest rating (2 points), while all other entrees on the scale are 1 point.
(15) Although the stapes, the interossicular joints, and the subarcuate fossae were slightly underdeveloped in the majority of cases, the other structures in the middle ear were almost normal.
(16) In over 200 consecutive operations performed under local anesthesia with the CO2 laser, no patient became dizzy intraoperatively while the CO2 laser was applied to the stapes footplate or the oval window neomembrane, confirming the lack of significant caloric effect to the inner ear at these energy settings.
(17) The best results were obtained in ears with intact stapes, while cholesteatomatous ears showed poorer results than other chronic ears.
(18) When the stapes superstructure was intact, 52% of the patients with canal-up operations had an air-bone gap of less than 20 dB.
(19) The reshaped incus is repositioned between the malleus handle and oval window when the stapes is fixed and there also exists a lateral ossicular chain defect.
(20) The result was that it is not possible to prove any phase shift between the two measurement points at the short or at the long base of the stapes in a volume range within the physiological limits.