These estimates are reinforced by a 1969 NCHS survey which cites the use of 46,000 upper-limb prostheses and 126,000 lower-limb prostheses or 52% and 76% of the arm and leg amputees respectively in that survey of the civilian, non-institutional population.
Rinse with apple cider vinegar. Among the many medical treatments apple cider vinegar can be used for, expediting the healing process of poison ivy exposure is one of them. Use a cotton pad to gently apply the vinegar to the area, or rinse it with a mixture of equal parts vinegar and water.
Wash anything that comes in contact with poison ivy to remove the oil. As you know, the rash is very itchy. It usually lasts about three weeks. For mild cases, you can use cool compresses, over-the-counter oral antihistamines, and hydrocortisone cream applied to the skin. For more severe cases, see your doctor.