Open AccessConcept design and design optimization of the transfemoral prosthetic leg prototype
Author(s) -
Remzo Dedić,
Faris Ustamujić,
Zlata Jelačić,
Želimir Husnić,
Vlado Kvesić
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1208/1/012017
Subject(s) - stairs , stair climbing , climb , knee joint , ankle , computer science , joint (building) , climbing , physical medicine and rehabilitation , simulation , engineering , medicine , structural engineering , surgery , aerospace engineering
The biggest challenge with today’s lower leg prosthetic devices is to climb the stairs in a biologically inspired way. When climbing the stairs, due to the large moments in the knee joint, great forces in the knee occur. Because of the magnitude of these forces, which can be up to six times the weight of a person, it is necessary to use a hydraulic drive with an external power source in the knee and ankle joint. However, most commercially available above-knee prosthetic legs only have actuation in the form of damping in the knee joint. Hence, an amputee is forced to use a healthy leg to advance to each step first while amputated leg follows.