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.
Source:
Rule 436-035-0140 — Amputations in the Lower Extremities, https://secure.sos.state.or.us/oard/view.action?ruleNumber=436-035-0140.