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The Role of Visual Attention and Environmental Complexity in Real-world Mobility for People With Lower Limb Amputation

Despite high medical expenses (\>$500K/patient), mobility improvements achieved during rehabilitation for people with lower limb amputation (LLA) fail to translate into improved real-world outcomes. Even with advances in prosthesis technology enabling faster gait speed, greater walking endurance, and improved mobility confidence, people with LLA report persistent dissatisfaction with real-world mobility, limited ability to walk in the community, and difficulty achieving recommended physical activity levels. Real-world walking requires thinking and moving simultaneously (e.g., cognitive-motor dual-tasking), visually attending to the environment, and navigating varying terrain. In contrast, clinical mobility assessments are usually performed without additional visual or cognitive demands, in controlled environments, and on level surfaces. Current clinical tools used to assess ambulation progression during rehabilitation do not adequately assess these changes in people who have experienced LLA.