| annular ligament of the stapes | A ring of elastic fibres that attaches the base of the stapes to the margin of the fenestra vestibuli. Synonym: ligamentum annulare stapedis. (05 Mar 2000) |
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| base of stapes | The flat portion of the stapes that fits in the oval window. Synonym: basis stapedis, footplate, foot-plate. (05 Mar 2000) |
| annular ligament | <anatomy> One of a number of ligament's encircling various parts; the principal annular ligament's are those of the stapes, radius, and trachea. See: annular ligament of the radius, annular ligament of the stapes, annular ligaments of the trachea. Synonym: ligamentum annulare, orbicular ligament. (05 Mar 2000) |
| annular ligament of the radius | The ligament that encircles and holds the head of the radius in the radial notch of the ulna, forming the proximal radioulnar joint and enabling pronation/supination of forearm; receives the radial collateral ligament of the elbow. Synonym: ligamentum annulare radii, ligamentum orbiculare radii, orbicular ligament of radius. (05 Mar 2000) |
| anterior crus of stapes | The anterior of the two delicate curving limbs of the stapes that pass from the head of the bone to the base or footplate. Synonym: crus anterius stapedis, anterior limb of stapes. (05 Mar 2000) |
| anterior limb of stapes | The anterior of the two delicate curving limbs of the stapes that pass from the head of the bone to the base or footplate. Synonym: crus anterius stapedis, anterior limb of stapes. (05 Mar 2000) |
| posterior crus of stapes | The posterior of the two delicate limbs of the stapes that connect the head and base or footplate of the bone. Synonym: crus posterius stapedis, posterior limb of stapes. (05 Mar 2000) |
| posterior limb of stapes | The posterior of the two delicate limbs of the stapes that connect the head and base or footplate of the bone. Synonym: crus posterius stapedis, posterior limb of stapes. (05 Mar 2000) |
| head of stapes | The portion of the stapes that articulates with the lenticular process of the incus. Synonym: caput stapedis. (05 Mar 2000) |
| stapes | One of three ossicles of the middle ear. (27 Sep 1997) |
| stapes mobilization | An operation to remobilise the footplate of the stapes to relieve conductive hearing impairment caused by its immobilization through otosclerosis or middle ear disease. (12 Dec 1998) |
| stapes mobilization operation | Now infrequently used operation involving fracture of tissue immobilizing the stapes to restore hearing; especially used in patients with otosclerosis. (05 Mar 2000) |
| annular | <dermatology> Arranged in or forming a ring. (09 Oct 1997) |
| annular band | The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. See: congenital amputation. Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. (05 Mar 2000) |
| annular cartilage | <anatomy> The lower most of the laryngeal cartilages, may be palpated just below the thyroid prominence Adjacent the cricoid cartilage and the first tracheal ring is the cricothyroid membrane, a site used for rapid emergency airway access (cricothyroidotomy). (13 Nov 1997) |