This Centers for Disease Control and Prevention (CDC) report details background, clinical presentation, initial management and disposition of Crush Injury and Crush Syndrome. The following is taken from the background section of the report: "In a terrorist attack, crush injury and crush syndrome may result from structural collapse after a bombing or explosion. Crush injury is defined as compression of extremities or other parts of the body that causes muscle swelling and/or neurological disturbances in the affected areas of the body. Typically affected areas of the body include lower extremities (74%), upper extremities (10%), and trunk (9%). Crush syndrome is localized crush injury with systemic manifestations. These systemic effects are caused by a traumatic rhabdomyolysis (muscle breakdown) and the release of potentially toxic muscle fell components and electrolytes into the circulatory system. Crush syndrome can cause local tissue injury,organ dysfunction, and metabolic abnormalities, including acidosis, hyperkalemia, and hypocalcemia..."
Centers for Disease Control and Prevention (U.S.): http://www.bt.cdc.gov/