The purpose of these studies was to evaluate a concern for falling (CFF) among people with a lower extremity amputation (PLEA). Study 1 evaluated relative and absolute test-retest reliability of five standardized scales which have not been previously evaluated among PLEA. Twenty-two participants completed Study 1, an online survey that was administered twice. Study 2 assessed the inter-relationship of the multiple dimensions in a CFF using nine standardized scales of measurement and open-ended questions, and the association on quality of life (QOL). Forty-eight participants completed Study 2, a onetime online survey. Study 1 provided support for the reliable use of four CFF standardized scales among PLEA. Study 2 demonstrated statistically significant correlations between subdomains of fear of falling, falls efficacy, and mobility efficacy and an independent association on overall QOL. Open-ended responses demonstrated numerous activities that elicited a CFF. A CFF negatively influences QOL in PLEA after successful prosthetic rehabilitation