The 67th volume of the journal comprises articles focused on biomimetic approaches in the design of quadruped robot and medical images, analysis of antibacterial and antimicrobial properties of some biomaterials and investigation of dolomite materials properties as a bioceramics substitute. The evaluation of tibia rotation in total knee arthroplasty designed for deep knee flexion using a knee kinematics motion simulator is also presented here. The presented research results will be useful to engineers in the area of robotics and biomedical engineering.