Category: T
-
Trichology
The study of hair and the diseases which affect it. The study of the hair and its care and treatment. The examination of hair, encompassing its composition, growth patterns, and various disorders. The scientific examination and investigation of hair and its disorders.
-
Trichiasis
A painful condition in which the eyelashes grow in towards the eye and scratch the eyeball. Abnormal turning in of the eyelashes that causes irritation of the eye; it may result from inflammation of the eyelids. The growth of eyelashes inward, toward the eye, rather than outward. Trichiasis may affect all or part of an…
-
Triceps brachii
A muscle in the back part of the upper arm which makes the forearm stretch out. The muscle of the posterior arm with three points of origin (one on the scapula, two on the humerus) and one insertion on the ulna. It extends the forearm and is controlled by the radial nerve.
-
Triangle
A flat shape which has three sides. Part of the body with three sides. A three-sided structure or area; for example, the femoral triangle. A figure or area formed by three angles and three sides.
-
Trial
A process of testing something such as a drug or treatment to see how effective it is, especially before allowing it to be used generally.
-
Treponematosis
An infection by the bacterium Treponema pertenue. Any infection caused by spirochete bacteria of the genus Treponema.
-
Treponema
A genus of bacteria which cause diseases such as syphilis or yaws. Genus of spirochetes, some of which produce disease in humans (e.g.. Treponema pallidum, the cause of syphillis). A genus of anaerobic spirochete bacteria. All species are parasitic and some cause disease in animals and man: T. carateum causes pinta, T. pallidum syphilis, and…
-
Trephination
A surgical operation which consists of removing a small part of the skull with a trephine in order to perform surgery on the brain. The process of cutting out a piece of bone with the trephine.
-
Trendelenburg’s sign
A symptom of congenital dislocation of the hip, where the person’s pelvis is lower on the opposite side to the dislocation. A pelvic drop on the side of the elevated leg when the patient stands on one leg and lifts the other. It indicates weakness or instability of the gluteus medius muscle on the stance…
-
Trendelenburg’s operation
An operation to tie a saphenous vein in the groin before removing varicose veins [After Friedrich Trendelburg (1844-1924), German surgeon]. A surgical procedure where the long saphenous vein in the thigh is ligated, which is performed as part of treating varicose veins in the leg.