To assess the carryover effect of an innovative new gait training program on physiological and functional gait performance in persons with a traumatic lower extremity amputation. A second objective is to clarify the relationship between gait biomechanics (joint and sgment kinematics and energy cost.

Inclusion Criteria

• Unilateral traumatic trans-tibial or transfemoral amputation
• Independent ambulation without an assistive device for a minimum of three months
• Ability to ambulate continuously for a minimum of 15 minutes
• Trans-femoral participants must use an ischial containment socket
• VAS Pain scores on the involved side of less than 4/10
• Sagittal plane ankle, knee and hip strength of 4 or greater on the uninvolved side as determined by manual muscle test.

Exclusion Criteria:

• Blindness
• TBI-Glascow Coma Scale score of 12 or lower at the time of injury
• Cardiac or pulmonary problems limiting physical activity PTSD or other psychological condition with symptoms that would be exacerbated by participation in the study.