The primary stability of cementless femoral components is crucial for the long-term success of total hip arthroplasty. The mechanisms which influence this stability are not yet well understood. However, mechanical environment in peri-implant tissue is known to be a key parameter in this context. Particularly, implant loading induces local micromotions at the bone-implant interface and affects the stability of the implant. In this project we are interested to characterize these micromotions and to interpret them into clinical solutions. In the first part of the project, we propose to design a loading device which allows to apply loads on bones in-vitro and to generate these micromotions. In the second part, student will use the microCT scan system to take images of bone under different loads and finally a home-made algorithm should be developed for micromotion measurement and statistical analyses. The work uses both biomechanics and image processing principles.