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Definition. Volkmann contracture is a deformity of the hand, fingers, and wrist caused by injury to the muscles of the forearm.Ischemic contracture. Volkmann contracture occurs when there is a lack of blood flow (ischemia) to the forearm.This usually occurs when there is increased pressure due to swelling, a condition called compartment syndrome.olkmann contracture occurs when there is a lack of blood flow (ischemia) to the forearm. This usually occurs when there is increased pressure due to swelling, a condition called compartment syndrome.
Brain ischemia (aka cerebral ischemia, cerebrovascular ischemia) is a condition in which there is insufficient blood flow to the brain to meet metabolic demand.This leads to poor oxygen supply or cerebral hypoxia and thus to the death of brain tissue or cerebral infarction / ischemic stroke.ther effects that may result from brain ischemia are stroke, cardiorespiratory arrest, and irreversible brain damage. An interruption of blood flow to the brain for more than 10 seconds causes unconsciousness, and an interruption in flow for more than a few minutes generally results in irreversible brain damage.