OAR 436-035-0140: Amputations in the Lower Extremities

(1) Amputation at or above the knee joint (up to and including the femoral head) is rated at 100% loss of the leg. (2) Amputation of the foot: (a) At or above the tibio-talar joint but below the knee joint is rated at 100% loss of the foot. (b) At the tarsometatarsal joints is rated at 75% loss of the foot. (c) At the mid-metatarsal area is rated at 50% of the foot. (d) Loss of all or part of a metatarsal is rated at 10% of the foot. (3) Amputation of the great toe: (a) At the interphalangeal joint is rated at 50% loss of the great toe. Between the interphalangeal joint and the tip will be rated in 5% increments, starting with zero for no loss of the tip. (b) At the metatarsophalangeal joint is rated at 100% loss of the great toe. Between the interphalangeal joint and the metatarsophalangeal joint will be rated in 5% increments, starting with 50% of the great toe for amputation at the interphalangeal joint. (4) Amputation of the second through fifth toes: (a) At the distal interphalangeal joint is rated at 50% loss of the toe. Between the distal interphalangeal and the tip will be rated in 5% increments, starting with zero for no loss of the tip. (b) At the proximal interphalangeal joint is rated at 75% loss of the toe. Between the proximal interphalangeal joint and the distal interphalangeal joint will be rated in 5% increments, starting with 50% of the toe for amputation at the distal interphalangeal joint. (c) At the metatarsophalangeal joint is rated at 100% loss of the toe. Between the proximal interphalangeal joint and the metatarsophalangeal joint will be rated in 5% increments, starting with 75% of the toe for amputation at the proximal interphalangeal joint.