| 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) |
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| 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) |
| 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) |
| valve of navicular fossa | A fold of mucous membrane sometimes found in the root of the navicular fossa of the urethra. Synonym: valvula fossae navicularis, Guerin's fold, Guerin's valve. (05 Mar 2000) |
| navicular | 1. Of, pertaining to, or resembling, a boat or ship. 2. Shaped like a boat; cymbiform; scaphoid; as, the navicular glumes of most grasses; the navicular bone. Navicular bone. <anatomy> A disease affecting the navicular bone, or the adjacent parts, in a horse's foot. Origin: L. Navicularius, fr. Navicula, dim. Of navis ship: cf. F. Naviculaire. <anatomy> The navicular bone. Source: Websters Dictionary (01 Mar 1998) |
| 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) |
| navicular articular surface of talus | The large convex surface on the head of the talus for articulation with the navicular bone. Synonym: facies articularis navicularis tali. (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) |
| articular tubercle 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) |
| marginal tubercle of zygomatic bone | A prominence on the temporal border of the zygomatic bone to which the temporal fascia is attached. Synonym: tuberculum marginale ossis zygomatici, marginal tubercle. (05 Mar 2000) |
| orbital tubercle of zygomatic bone | A small elevation on the orbital surface of the zygomatic bone, just within the orbital margin, about 1 cm below the zygomaticofrontal suture; it gives attachment to the lateral check ligament, the lateral palpebral ligament, and the suspensory ligament of the eyeball. Synonym: eminentia orbitalis ossis zygomatici, orbital eminence of zygomatic bone, Whitnall's tubercle. (05 Mar 2000) |
| tubercle of scaphoid bone | A projection at the inferior lateral angle of the scaphoid (navicular) bone; it can be felt at the root of the thumb. Synonym: tuberculum ossis scaphoidei. (05 Mar 2000) |
| bone within a bone | <radiology> STOP heavy metal, S: sickle cell disease, T: Thorotrast, O: osteopetrosis, P: Paget's disease, heavy metals, hypervitaminosis D (12 Dec 1998) |