Fixation, external

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Fixation, external

Fixation, external

A procedure that stabilizes and joins the ends of fractured (broken) bones by a splint or cast. External fixation is as opposed to internal fixation in which the ends of the fractured bone are joined by mechanical devices such as metal plates, pins, rods, wires or screws.

RELATED TERMS
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Splint
Connection of two or more teeth so they function as a stronger single structure.

Cast
Reproduction of structures made by pouring plaster or stone into a mold.

Fixation
Alignment of the eyes so that the image of the fixated target falls on the area centralis. For animals with immobile eyes the alignment of the head towards the fixated target.

Bone
Bone refers either to a hardened connective tissue or to one of the individual structures, or organs, into which it is formed, found in many animals. Bones support body structures, protect internal organs, and (in conjunction with muscles) facilitate movement; are also involved with cell formation, calcium metabolism, and mineral storage. The bones of an animal are, collectively, known as the skeleton.

Rods
The rods are the visual cells of the retina that are important for night vision and peripheral vision. The rods are the first affected in rod-cone degenerations such as RP.

SIMILAR TERMS
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Fixation
Alignment of the eyes so that the image of the fixated target falls on the area centralis. For animals with immobile eyes the alignment of the head towards the fixated target.

Fixation, internal
A surgical procedure that stabilizes and joins the ends of fractured (broken) bones by mechanical devices such as metal plates, pins, rods, wires or screws. Internal fixation is as opposed to external fixation of a fracture by a splint or cast.

Fixative
A medium such as a solution or spray that preserves specimens of tissues or cells. Most biopsies and specimens removed at surgery are fixed in a solution such as formalin (dilute formaldehyde) before further processing takes place. Other common ingredients used in fixatives are alcohol, mercuric chloride, potassium dichromate and sodium sulfate.

PREVIOUS AND NEXT TERMS
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Fish-odor syndrome
An inborn error of metabolism associated with an offensive body odor, the smell of rotting fish, due to the excessive excretion of trimethylaminuria (TMA) in urine, sweat, and breath. Persons with TMA may experience tachycardia (fast heart rate) and severe hypertension (high blood pressure) after eating cheese (which contains tyramine) and after using nasal sprays containing epinephrine. TMA is caused by a mutation (change) in the gene for an enzyme, flavin-containing monooxygenase-3 (FMO3) encoded by a gene on chromosome #1. The FMO3 enzyme metabolizes tyramine (which is in cheese). The syndrome is associated with various psychosocial reactions, including social isolation, clinical depression and attempted suicide.

Fissure, palpebral
The opening for the eye between the eyelids.

Fistula, anal
An opening in the skin near the anus that leads into a blind pouch or may connect through a tunnel with the rectal canal.

Five-day fever
Also called trench fever, this is a disease borne by body lice that was first recognized in the trenches of World War I, when it is estimated to have affected more than a million people in Russia and on the fronts in Europe. Trench fever was again a major problem in the military in World War II and is seen endemically in Mexico, Africa, E. Europe, and elsewhere. The cause of trench fever is Bartonella quintana (also called Rochalimaea quintana), an unusual rickettsial organism that multiplies in the gut of the body louse. Transmission of the rickettsia to people can occur by rubbing infected louse feces into abraded (scuffed) skin or into the conjunctivae (whites of the eyes). The disease is classically a 5-day fever. The onset of symptoms is sudden with high fever, severe headache, back pain and leg pain and a fleeting rash. Recovery takes a month or more. Relapses are common.

Five-lipoxygenase activating protein
A gene that helps make a leukotriene, a signal that activates the white blood cells involved in inflammation. FLAP stands for 5-lipoxygenase-activating protein. FLAP has been implicated in a number of inflammatory responses, including asthma, arthritis, psoriasis, heart attack and stroke. FLAP was the first gene discovered to be a major risk factor for the common form of heart attack and the second major genetic factor identified in the common form of stroke.

Fixation, external

Fixation, internal
A surgical procedure that stabilizes and joins the ends of fractured (broken) bones by mechanical devices such as metal plates, pins, rods, wires or screws. Internal fixation is as opposed to external fixation of a fracture by a splint or cast.

Fixative
A medium such as a solution or spray that preserves specimens of tissues or cells. Most biopsies and specimens removed at surgery are fixed in a solution such as formalin (dilute formaldehyde) before further processing takes place. Other common ingredients used in fixatives are alcohol, mercuric chloride, potassium dichromate and sodium sulfate.

Flail chest
When enough ribs are broken (usually from a crush injury) to compromise the rigidity of the chest wall. On inspiration, the chest wall moves inward instead of outward and the opposite on expiration.

FLAP
A gene that helps make a leukotriene, a signal that activates the white blood cells involved in inflammation. FLAP stands for 5-lipoxygenase-activating protein. FLAP has been implicated in a number of inflammatory responses, including asthma, arthritis, psoriasis, heart attack and stroke. FLAP was the first gene discovered to be a major risk factor for the common form of heart attack and the second major genetic factor identified in the common form of stroke. Also known, confusingly, as 5-lipoxygenase activating protein, five-lipoxygenase-activating protein, five-lipoxygenase activating protein, arachidonate 5-lipoxygenase-activating protein, arachidonate 5-lipoxygenase activating protein, and ALOX5AP.

Flat condyloma
A manifestation of the secondary stage of syphilis that takes the form of broad flat wartlike growths in moist creased areas, as around the anus and external genitalia. Also called condyloma latum.

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This dictionary contains 25007 terms.

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