avascular necrosis

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a·vas·cu·lar ne·cro·sis

necrosis resulting from deficient blood supply.
Farlex Partner Medical Dictionary © Farlex 2012

a·sep·tic ne·cro·sis

(ā-sep'tik nĕ-krō'sis)
Death or decay of tissue due to local ischemia in the absence of infection.
Synonym(s): avascular necrosis.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


(ne-kro'sis) ('sez?) plural.necroses [Gr. nekrosis, (state of) death]
Enlarge picture
NECROSIS: Necrotic wound of the foot
The death of cells, tissues, or organs. Necrosis may be caused by insufficient blood supply, pathogenic microorganisms, physical agents such as trauma or radiant energy (electricity, infrared, ultraviolet, roentgen, and radium rays), and chemical agents acting locally, acting internally after absorption, or placed into the wrong tissue. Some medicines cause necrosis if injected into the tissues rather than the vein, and some, such as iron dextran, cause necrosis if injected into areas other than deep muscle or vein. See: illustration; gangrene; mortificationnecrotizing (nek'ro-tiz?ing), adjective

acute esophageal necrosis

Necrotizing esophagitis.

acute tubular necrosis

Abbreviation: ATN
Acute damage to the renal tubules; usually due to ischemia associated with shock.
See: acute renal failure

anemic necrosis

Necrosis due to inadequate blood flow to a body part.

aseptic necrosis

Necrosis without infection, e.g., as a result of trauma or drug use.

avascular necrosis


Balser fatty necrosis

See: Balser fatty necrosis

caseous necrosis

Necrosis with soft, dry, cheeselike formation, seen in diseases such as tuberculosis or syphilis. Synonym: cheesy necrosis

central necrosis

Necrosis that affects only the center of a body part.

cheesy necrosis

Caseous necrosis.

coagulation necrosis

Necrosis occurring esp. in infarcts. Coagulation occurs in the necrotic area, converting it into a homogeneous mass and depriving the organ or tissue of blood.
Synonym: fibrinous necrosis; ischemic necrosis

colliquative necrosis

Necrosis caused by liquefaction of tissue due to autolysis or bacterial putrefaction. Synonym: liquefactive necrosis

dry necrosis

Dry gangrene.

embolic necrosis

Necrosis due to an embolic occlusion of an artery.

fat necrosis

Necrosis of fatty tissues, seen, for example, in patients with severe cases of pancreatitis.

fibrinous necrosis

Coagulation necrosis.

focal necrosis

Necrosis in small scattered areas, often seen in infection.

gummatous necrosis

Necrosis forming a dry rubbery mass resulting from syphilis.

ischemic necrosis

Coagulation necrosis.

liquefactive necrosis

Colliquative necrosis.

medial necrosis

Necrosis of cells in the tunica media of an artery.

moist necrosis

Necrosis with softening and wetness of the dead tissue.

postpartum pituitary necrosis

Sheehan syndrome.

putrefactive necrosis

Necrosis due to bacterial decomposition.

radiation necrosis

Necrosis caused by radiation exposure.

subcutaneous fat necrosis of newborn

An inflammatory disorder of unknown cause affecting fat tissue that may occur in the newborn at the site of application of forceps during delivery and occasionally in premature infants.

superficial necrosis

Necrosis affecting only the outer layers of bone or any tissue.

thrombotic necrosis

Necrosis due to thrombus formation.

total necrosis

Necrosis affecting an entire organ or body part.

Zenker necrosis

See: Zenker, Friedrich Albert von
Medical Dictionary, © 2009 Farlex and Partners

avascular necrosis

Death of a tissue, especially bone, as a result of deprivation of its blood supply. Avascular necrosis of bone is often referred to as osteonecrosis.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Col Suhail Sadiq, TJ, Avn, Lt Col Jahanzeb Ahmed Satti, Avn.
The other chemotherapy agents with which our patient had been treated (cytarabine, vincristine, L-asparaginase, daunorubicin, and methotrexate) have no reported links to AVN. When mentioned in the literature, however, they are usually coupled with the use of dexamethasone or prednisone.
In our case, we report a trapezium AVN that was treated conservatively.
Collapse of articular surface of femoral head was the exclusive finding of later stage of AVN (stage IV) with 100%.
Mr Shah says the results could transform the treatment of AVN, which is also found in the knee and shoulder.
"So far, we only have the AVN system for the Honda City but we will study market reaction first.
The McCafferys live a few kilometres from the AVN headquarters, in a region where 33% of children are not fully vaccinated.
In 2009, another group was set up: Stop the Australian Vaccination Network (SAVN), with the stated aim of shutting down the AVN. SAVN's main presence is a Facebook page with several thousand friends; the group is not incorporated and apparently has no bank account, office bearers, or formal leader.
The main challenge lies in distinguishing between TOH and AVN. Some authors suggested that transient ischemic insult to the bone may be cause of transient osteoporosis.
Tamil Nadu, May 8 -- Best Western India, with 41 hotels, in operation and under development in India, today announced the launch of the BEST WESTERN AVN Arogya in Madurai, Tamil Nadu.