This study explored the problems of prosthesis use in four dimensions of activity in 122 males and 9 females, aged 24 to 90 years, with lower extremity amputations. Comparisons were made between persons with above‐the‐knee amputation and those with below‐the‐knee amputation. A four‐dimensional prosthetic problem inventory scale developed by the investigators was used. Results of this study provide a framework for identifying and addressing problematic areas in the use of p