| nutrient artery of the tibia | Artery derived from the upper part of the posterior tibial artery; it enters through the nutrient foramen on the posterior surface of the tibia. Synonym: arteria nutriens tibialis. (05 Mar 2000) |
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| superior articular surface of tibia | The articular surface on the proximal end of the tibia that is divided into medial and lateral portions for articulation with the condyles of the femur. Synonym: facies articularis superior tibiae. (05 Mar 2000) |
| inferior articular surface of tibia | The quadrilateral surface on the distal end of the tibia for articulation with the talus; it is concave anteroposteriorly and broader anteriorly. Synonym: facies articularis inferior tibiae. (05 Mar 2000) |
| interosseous border of tibia | The ridge along the lateral border of the tibia to which is attached the interosseous membrane. Synonym: margo interosseus tibiae. (05 Mar 2000) |
| tibia | <anatomy> The large bone between the knee and foot that supports 5/6 of the body weight (fibula supports 1/6). (27 Sep 1997) |
| tibia valga | A deformity marked by lateral angulation of the leg in relation to the thigh. Synonym: knock-knee, tibia valga. (05 Mar 2000) |
| tibia vara | <radiology> (Blount disease) Common, causes bowlegs in kids, possibly due to ischemic necrosis, associated with early walking Findings: bilateral tibia vara (bowleggedness), abnormal medial aspect of proximal tibia, small epiphysis, beaked metaphysis (12 Dec 1998) |
| fibular articular surface of tibia | The flat circular articular facet on the inferior and lateral aspect of the lateral condyle of the tibia for articulation with the head of the fibula. Synonym: facies articularis fibularis tibiae. (05 Mar 2000) |
| lateral condyle of tibia | The lateral condyle is longer than the medial condyle. Synonym: condylus lateralis tibiae. (05 Mar 2000) |
| lateral surface of tibia | The laterally directed surface of the tibia. Synonym: facies lateralis tibiae. (05 Mar 2000) |
| semilunar | Shaped like a half moon. <anatomy> Semilunar bone, the valves at the beginning of the aorta and of the pulmonary artery which prevent the blood from flowing back into the ventricle. <anatomy> The semilunar bone. Source: Websters Dictionary (01 Mar 1998) |
| semilunar bone | An obsolete term for lunate bone. (05 Mar 2000) |
| semilunar cartilage | One of the articular menisci of the knee joint. See: lateral meniscus, medial meniscus. (05 Mar 2000) |
| semilunar conjunctival fold | The semilunar fold formed by the palpebral conjunctiva at the medial angle of the eye, a fold of the conjunctival mucous membrane found in many animals; normally partially hidden in the medial canthus of the eye when at rest, it may be extended to cover part or all of the cornea in a winking-like action to clean the cornea, as in birds. Synonym: membrana nictitans, nictitating membrane, palpebra III, palpebra tertia, third eyelid. Synonym: plica lunata, plica semilunaris of eye, semilunar conjunctival fold. (05 Mar 2000) |
| semilunar cusp | One of the three semilunar segments serving as the three cusps of a valve preventing regurgitation at the beginning of the aorta; a similar valve guards the entrance of the pulmonary trunk; the segments are named, respectively, anterior, right, and left in the pulmonary valve, and posterior, right, and left in the aortic valve. (05 Mar 2000) |