| CAR | Canadian Association of Radiologists; cancer-associated retinopathy; cardiac ambulation routine; cel... |
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| IA | ibotenic acid; immune adherence; immunoadsorbent; immunobiologic activity; impedance angle; indolami... |
| JA | judgment analysis; juvenile atrophy; juxta-articular |
| PASA | para-aminosalicylic acid; primary acquired sideroblastic anemia; proximal articular set angle |
| TARA | total articular replacement arthroplasty; tumor-associated rejection antigen |
| navicular abdomen | A condition in which the anterior abdominal wall is sunken and presents a concave rather than a convex contour. Synonym: boat-shaped abdomen, navicular abdomen. (05 Mar 2000) |
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| navicular bone | A bone of the tarsus on the medial side of the foot articulating with the head of the talus, the three cuneiform bones, and occasionally the cuboid. Synonym: os naviculare, central bone of ankle, os centrale tarsi. (05 Mar 2000) |
| navicular bone of hand | The largest bone of the proximal row of the carpus on the lateral (radial) side, articulating with the radius, lunate, capitate, trapezium, and trapezoid. Synonym: os scaphoideum, navicular bone of hand, os naviculare manus. (05 Mar 2000) |
| navicular disease | A common cause of lameness in horses, especially light racing animals; it is essentially a chronic osteitis of the navicular bone associated with bursitis and inflammation of the plantar aponeurosis; occurs most frequently in the forefeet and is believed to be due to damage from frequent and severe strain. Synonym: navicularthritis. (05 Mar 2000) |
| navicular fossa of urethra | The terminal dilated portion of the urethra in the glans penis. Synonym: fossa navicularis urethrae, fossa terminalis urethrae, Morgagni's fossa, Morgagni's fovea. (05 Mar 2000) |
| navicular fracture | <orthopaedics> A fracture of the scaphoid (navicular) bone in the wrist. The most common method of injury is a fall on an outstretched hand in an adult. In children, this same type of fall more commonly results in a Colles fracture. (27 Sep 1997) |
| tuberosity of navicular bone | A rounded eminence on the medial surface of the navicular bone, giving attachment to a part of the tendon of the tibialis posterior muscle. Synonym: tuberositas ossis navicularis, scaphoid tuberosity. (05 Mar 2000) |
| body of talus | The large posterior part of the talus forming the trochlea above for articulation with the tibia and fibula and articulating below with the calcaneus. Synonym: corpus tali. (05 Mar 2000) |
| medial tubercle of posterior process of talus | The eminence medial to the sulcus for the flexor hallucis longus tendon. Synonym: tuberculum mediale processus posterioris tali. (05 Mar 2000) |
| posterior process of talus | A projection of the talus bearing medial and lateral tubercles; it is posterior and inferior to the trochlea. Synonym: processus posterior tali, Stieda's process. (05 Mar 2000) |
| head of talus | The rounded anterior portion of the talus articulating with the navicular bone. Synonym: caput tali. (05 Mar 2000) |
| pulley of talus | The rounded articular surface of the talus articulating with the distal ends of the tibia and fibula. Synonym: trochlea tali, pulley of talus. (05 Mar 2000) |
| neck of talus | A constriction separating the head, or anterior portion, from the body of the talus. Synonym: collum tali. (05 Mar 2000) |
| interosseous groove of talus | The groove on the inferior surface of the talus, which with a corresponding groove on the calcaneus forms the sinus tarsi. Synonym: sulcus tali, interosseous groove, talar sulcus. (05 Mar 2000) |
| talus | 1. <anatomy> The astragalus. 2. <surgery> A variety of clubfoot (Talipes calcaneus). See the Note under Talipes. 1. A slope; the inclination of the face of a work. 2. <geology> A sloping heap of fragments of rock lying at the foot of a precipice. Origin: L, the ankle, the ankle bone. (26 Nov 1998) |