| AAR | active avoidance reaction; acute articular rheumatism; antigen-antiglobulin reaction |
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| ACC | accommodation; acetyl coenzyme A carboxylase; acinic cell carcinoma; acute care center; adenoid cyst... |
| AM | Academic Medicine [journal]; actomyosin; acute myelofibrosis; adult male; adult monocyte; aerospace ... |
| BASE | B27-arthritis-sacroiliitis-extra-articular features [syndrome] |
| CAR | Canadian Association of Radiologists; cancer-associated retinopathy; cardiac ambulation routine; cel... |
| articular crescent | A crescent-shaped intra-articular fibrocartilage found in certain joints. Synonym: meniscus articularis, articular crescent, intra-articular cartilage. (05 Mar 2000) |
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| articular crests | Crests formed by the fusion of articular processes of all the sacral vertebrae. Synonym: articular crests, cristae sacrales intermediae. (05 Mar 2000) |
| articular disc | A plate or ring of fibrocartilage attached to the joint capsule and separating the articular surfaces of the bones for a varying distance, sometimes completely; it serves to adapt two articular surfaces that are not entirely congruent. Synonym: discus articularis, articular disk, fibrocartilago interarticularis, fibroplate, interarticular fibrocartilage, intra-articular cartilage. (05 Mar 2000) |
| articular disc of acromioclavicular joint | The articular disk of fibrocartilage usually found between the acromial end of the clavicle and the medial border of the acromion. Synonym: discus articularis acromioclavicularis, acromioclavicular disk, Weitbrecht's cartilage. (05 Mar 2000) |
| articular disc of distal radioulnar joint | The disk that holds together the distal ends of the radius and ulna; it is attached by its apex to a depression between the styloid process and distal surface of the head of the ulna, and by its base to the ridge separating the ulnar notch from the carpal surface of the radius. Synonym: discus articularis radioulnaris, radioulnar disk, radioulnar articular disk, triangular cartilage, triangular disk of wrist, triquetrous cartilage. (05 Mar 2000) |
| articular disc of sternoclavicular joint | The fibrocartilaginous disk that subdivides the sternoclavicular joint into two cavities. Synonym: discus articularis sternoclavicularis, sternoclavicular disk, sternoclavicular articular disk. (05 Mar 2000) |
| articular disc of temporomandibular joint | The fibrocartilaginous plate that separates the joint into upper and lower cavities. Synonym: discus articularis temporomandibularis, mandibular disk, temporomandibular articular disk. (05 Mar 2000) |
| articular disk | A plate or ring of fibrocartilage attached to the joint capsule and separating the articular surfaces of the bones for a varying distance, sometimes completely; it serves to adapt two articular surfaces that are not entirely congruent. Synonym: discus articularis, articular disk, fibrocartilago interarticularis, fibroplate, interarticular fibrocartilage, intra-articular cartilage. (05 Mar 2000) |
| articular eminence of temporal bone | Articular eminence of the temporal bone which bounds the mandibular fossa anteriorly; it forms the anterior root of the zygomatic process; it is enclosed by the articular capsule of the temporomandibular joint with the articular fossa; the head of the mandible (and intervening articular disc) move onto the articular tubercle to allow full depression of mandible (opening of mouth). Synonym: tuberculum articulare ossis temporalis, articular eminence of temporal bone, eminentia articularis ossis temporalis, tuber zygomaticum. (05 Mar 2000) |
| articular facet | A relatively small articular surface of a bone, especially a vertebra. (05 Mar 2000) |
| articular fossa of temporal bone | A deep hollow in the squamous portion of the temporal bone at the root of the zygoma, in which rests the condyle of the mandible. Synonym: cavitas glenoidalis, fossa mandibularis, articular fossa of temporal bone, glenoid cavity, glenoid fossa, glenoid surface. (05 Mar 2000) |
| articular fracture | A fracture involving the joint surface of a bone. (05 Mar 2000) |
| articular labrum | A fibrocartilaginous lip around the margin of the concave portion of some joints. Synonym: labrum articulare, articular lip. (05 Mar 2000) |
| articular lamella | The compact layer of bone on its articular surface that is firmly attached to the overlying articular cartilage. (05 Mar 2000) |
| articular leprosy | A late stage of anaesthetic leprosy. Synonym: mutilating leprosy. (05 Mar 2000) |