Vukelic, DjordjeBudak I.Tadic, BrankoŠimunovic̈ G.Kljajić, VladimirAgarski, Boris2021-04-202021-04-2020171735-1472https://scidar.kg.ac.rs/handle/123456789/11562© 2016, Islamic Azad University (IAU). Selection of the optimal product, where several products’ aspects are expressed through criteria, is a multi-criteria decision-making problem. Besides technical, exploitational, functional, structural, market and aesthetic criteria, nowadays, environmental criteria are inevitable aspects of a modern product. Environmental product properties can be successfully evaluated with a life cycle assessment. This paper proposes a multi-criteria decision-making model for optimal product assessment that uses environmental criteria obtained from a life cycle assessment. The proposed model presents a comprehensive approach that aims to overcome complex decision-making problems for optimal product selection, where special attention is given to the product’s environmental impact. Verification of the proposed multi-criteria decision-making and life cycle assessment model was performed on the case study of optimal knee support selection. By changing the criteria weights in multi-criteria decision-making, a sensitivity analysis was performed. The model output results show the product alternatives ranking that supports decision-making in optimal product selection.restrictedAccessarticle10.1007/s13762-016-1151-82-s2.0-85010403150