Rapid Rehabilitation to Treat Lower Extremity Trauma

Inclusion Criteria: * Research participants will be eligible active duty service members and retired veterans. * Having lower limb trauma (transtibial and transfemoral amputations, bilateral amputations, and limb salvage). * Are enrolled in conventional rehabilitation at the participating military treatment centers. * Subjects with dysvascular disease will be excluded because compromised lower limb somatosensation and circulation are independently linked with poor postural stability and a history of frequent falls. * For subjects with amputations, the individual must be a community ambulator (i.e., K-Level 3 or 4). * For subjects with limb salvage, they will need to have an IDEO and be entered into the Return-to-Run training program. Exclusion Criteria: \- Subjects must not have excessive pain or other neuromuscular problems that preclude them from performing the test protocol.