| trochoid joint | A synovial joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal radioulnar joint. Synonym: articulatio trochoidea, helicoid ginglymus, lateral ginglymus, rotary joint, rotatory joint, trochoid articulation, trochoid joint. (05 Mar 2000) |
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| jaw joint | <anatomy, dentistry> The joint that connects the lower jaw to the skull. (12 Jan 1998) |
| joint | 1. To unite by a joint or joints; to fit together; to prepare so as to fit together; as, to joint boards. "Pierced through the yielding planks of jointed wood." (Pope) 2. To join; to connect; to unite; to combine. "Jointing their force 'gainst Caesar." (Shak) 3. To provide with a joint or joints; to articulate. "The fingers are jointed together for motion." (Ray) 4. To separate the joints; of; to divide at the joint or joints; to disjoint; to cut up into joints, as meat. "He joints the neck. "Quartering, jointing, seething, and roasting." (Holland) Origin: Jointed; Jointing. 1. The place or part where two things or parts are joined or united; the union of two or more smooth or even surfaces admitting of a close-fitting or junction; junction as, a joint between two pieces of timber; a joint in a pipe. 2. A joining of two things or parts so as to admit of motion; an articulation, whether movable or not; a hinge; as, the knee joint; a node or joint of a stem; a ball and socket joint. See Articulation. "A scaly gauntlet now, with joints of steel, Must glove this hand." (Shak) "To tear thee joint by joint." (Milton) 3. The part or space included between two joints, knots, nodes, or articulations; as, a joint of cane or of a grass stem; a joint of the leg. 4. Any one of the large pieces of meat, as cut into portions by the butcher for roasting. 5. <geology> A plane of fracture, or divisional plane, of a rock transverse to the stratification. 6. The space between the adjacent surfaces of two bodies joined and held together, as by means of cement, mortar, etc.; as, a thin joint. 7. The means whereby the meeting surfaces of pieces in a structure are secured together. Coursing joint, the chair that supports the ends of abutting rails. Joint coupling, a universal joint for coupling shafting. See Universal. Joint hinge, a hinge having long leaves; a strap hinge. Joint splice, a reenforce at a joint, to sustain the parts in their true relation. Joint stool. A stool consisting of jointed parts; a folding stool. A block for supporting the end of a piece at a joint; a joint chair. Out of joint, out of place; dislocated, as when the head of a bone slips from its socket; hence, not working well together; disordered. "The time is out of joint." Origin: F. Joint, fr. Joindre, p. P. Joint. See Join. Source: Websters Dictionary (01 Mar 1998) |
| joint branches | Branches distributed to joints. Almost any vessel related to a joint will supply articular rami. Most joints receive articular branches from the intramuscular branches of the motor nerves innervating the muscles crossing the joint (see Hilton's law). at this printing, Nomina Anatomica, however, specifically recognises only the articular branches of the descending genicular artery, ramus articulares arteriae descendentis genicularis; supplying the knee joint. Synonym: rami articulares, joint branches. (05 Mar 2000) |
| joint capsule | The sac-like envelope which encloses the cavity of a synovial joint by attaching to the circumference of the articular end of each involved bone. It consists of two layers. The fibrous membrane of the articular capsule (membrana fibrosa capsulae articularis) is the outer layer and is composed of dense white fibrous tissue. The synovial membrane (membrana synovialis capsulae articularis) is the inner layer composed of loose connective tissue and possessing a smooth surface lining the joint cavity. (12 Dec 1998) |
| joint commission on accreditation of healthcare organizations | A private, voluntary, not-for-profit organization which establishes standards for the operation of health facilities and services, conducts surveys, and awards accreditation. (12 Dec 1998) |
| joint deformities, acquired | Deformities acquired after birth as the result of injury or disease. The joint deformity is often associated with rheumatoid arthritis and leprosy. (12 Dec 1998) |
| joint effusion | Increased fluid in synovial cavity of a joint. (05 Mar 2000) |
| joint evil | joint ill |
| joint-fir | <botany> A genus (Ephedra) of leafless shrubs, with the stems conspicuously jointed; called also shrubby horsetail. There are about thirty species, of which two or three are found from Texas to California. Source: Websters Dictionary (01 Mar 1998) |
| joint hypermobility syndrome | <syndrome> A common benign childhood condition involving hypermobile joints (that can move beyond the normal range of motion). Symptoms include pains in knees, fingers, hips, and elbows. The affected joints may sprain or dislocate. Scoliosis (curvature of the spine) is more frequent. Usually improves with adulthood. Also called the hypermobility syndrome. (12 Dec 1998) |
| joint instability | Lack of stability of a joint or joint prosthesis. Factors involved are intra-articular disease and integrity of extra-articular structures such as joint capsule, ligaments, and muscles. (12 Dec 1998) |
| joint loose bodies | Fibrous, bony, cartilaginous and osteocartilaginous fragments in a synovial joint. Major causes are osteochondritis dissecans, synovial chondromatosis, osteophytes, fractured articular surfaces and damaged menisci. (12 Dec 1998) |
| joint mice | <radiology> Ossicles within joint space, seen in synovial osteochondromatosis (12 Dec 1998) |
| joint of head of rib | The synovial joint between a rib and bodies of two adjacent vertebrae; the joint cavity is divided by an intra-articular ligament which attaches to the intervertebral disk; the first, tenth, eleventh, and twelfth ribs articulate with only one vertebra. Synonym: articulatio capitis costae, capitular joint. (05 Mar 2000) |