Healthgrades Editorial Staff. Tingling in both feet can have a number of causes, including an injury, sitting in one position for a long period of time, or a circulation problem that impairs blood flow to the feet. Tingling in both feet can also be caused by nerve damage from extreme heat or cold or from toxic substances.
A lopped-off finger will still have a place on your hand for about 12 hours after amputation if not refrigerated, but a full limb like an arm or leg -- left at room temperature -- must be reattached within six to 12 hours, due to rapid death of muscle tissue.
Dry ice should not be used, as this will permanently damage the tissue of the severed finger. It is important if replantation of the finger is to be considered, that immediate medical attention is obtained. Replantation is generally not possible for fingers that have been separated from the body for more than 12 hours. In cases where the injury is further into the hand or arm, the time to reattachment is even shorter, as muscle tissue must be reattached within 6 hours from the time of injury.