Introduction: Prostheses are used as a replacement for amputated limbs. The function of the prosthesis can be purely aesthetic, and in most cases, it is intended to return functional mobility to the individual and the ability to perform daily tasks. The feature of the prosthesis directly affects the pattern of walking, so a lot of attention needs to be paid to choosing the appropriate prosthesis for each individual. Purpose: The purpose of this undergraduate thesis is to review professional literature in the field of prosthetic feet. In the first part, we will describe the individual categories in which they are classified, and then present their impact on walking. Methods: The descriptive method was used to write this undergraduate thesis. The search for professional articles was carried out using Google Scholar, Science Direct and PubMed databases in October 2017 and in June 2018. We searched for articles in English and Slovene. We selected articles published in the period from 2004 to 2018. Inclusion criteria in search: TT unilateral amputation, existing prosthesis, comparison between prosthetic feet. Results: When measuring the step length, cadence and walking speed, there were no statistically significant differences in the literature between various prosthetic feet. Among the SEW average values, there were some differences between the individual feet. Talux and Proprio feet generally achieved higher values compared to SACH and SAFE feet. Comparisons between SACH and SAFE did not show statistically significant differences, nor did the comparisons between Talux and Proprio. Discussion and conclusion: Methods of walking analyses are usually evaluated as time, space, kinetic and kinematic variables during a walking cycle. Studies that compared the effectiveness of prosthetic feet with respect to step length have failed to demonstrate functional differences. When measuring the SEW value, Talux and Proprio feet were slightly standing out compared to SACH and SAFE, but the differences between them are still minor. We believe that differences in results can be largely attributed to different variables such as prosthetic socket, differences in functional levels between the amputees and the selection of the appropriate measuring tool.