| ORALABX | oral antibiotics |
|---|---|
| ORD | optical rotatory dispersion; oral radiation death |
| OROS | oral osmotic |
| ORT | object relations technique; operating room technician; oral rehydration therapy |
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
| xiphisternal joint | The cartilaginous union between the xiphoid process and the body of the sternum. Synonym: synchondrosis xiphosternalis. (05 Mar 2000) |
|---|---|
| screw joint | A variety of hinge joint in which the elevation and depression, respectively, on the opposing articular surfaces form part of a spiral, flexion being then accompanied by a certain amount of lateral deviation. Synonym: screw joint, spiral joint. (05 Mar 2000) |
| hinge joint | A uniaxial joint in which a broad, transversely cylindrical convexity on one bone fits into a corresponding concavity on the other, allowing of motion in one plane only, as in the elbow. Synonym: ginglymus, ginglymoid joint. (05 Mar 2000) |
| hip joint | The ball-and-socket synovial joint between the head of the femur and the acetabulum. Synonym: articulatio coxae, coxa, thigh joint. (05 Mar 2000) |
| hospital-physician joint ventures | A formal financial agreement made between one or more physicians and a hospital to provide ambulatory alternative services to those patients who do not require hospitalization. (12 Dec 1998) |
| humeroradial joint | The portion of the elbow joint between the capitulum of the humerus and the head of the radius. Synonym: articulatio humeroradialis, humeroradial articulation. (05 Mar 2000) |
| humeroulnar joint | The portion of the elbow joint between the trochlea of the humerus and the trochlear notch of the ulna. Synonym: articulatio humeroulnaris. (05 Mar 2000) |
| shoulder joint | A ball-and-socket synovial joint between the head of the humerus and the glenoid cavity of the scapula. Synonym: articulatio humeri, glenohumeral articulation, humeral articulation. (05 Mar 2000) |
| simple joint | One composed of two bones only. Synonym: articulatio simplex. (05 Mar 2000) |
| hysterical joint | A simulation of joint disease, with symptoms of pain, possibly swelling, and impairment of motion. (05 Mar 2000) |
| socket joint | A multiaxial synovial joint in which a more or less extensive sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint. Synonym: articulatio spheroidea, articulatio cotylica, cotyloid joint, enarthrodial joint, enarthrosis, socket joint, spheroid articulation, spheroid joint. (05 Mar 2000) |
| spheno-occipital joint | Cartilaginous union between the body of the sphenoid and the basilar portion of the occipital; it fuses by the twentieth year; incorrectly called spheno-occipital suture. Synonym: synchondrosis spheno-occipitalis, spheno-occipital joint, spheno-occipital suture. (05 Mar 2000) |
| spheroid joint | A multiaxial synovial joint in which a more or less extensive sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint. Synonym: articulatio spheroidea, articulatio cotylica, cotyloid joint, enarthrodial joint, enarthrosis, socket joint, spheroid articulation, spheroid joint. (05 Mar 2000) |
| spiral joint | A variety of hinge joint in which the elevation and depression, respectively, on the opposing articular surfaces form part of a spiral, flexion being then accompanied by a certain amount of lateral deviation. Synonym: screw joint, spiral joint. (05 Mar 2000) |
| sternoclavicular joint | The synovial articulation between the medial end of the clavicle and the manubrium of the sternum and cartilage of the first rib; an articular disk subdivides the joint into two cavities. Synonym: articulatio sternoclavicularis. (05 Mar 2000) |