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Full-Text Articles in Biomedical Engineering and Bioengineering
Revision Total Hip Femoral Stem Micromotion And Statistical Shape Modeling Of The Knee, William Fugit
Revision Total Hip Femoral Stem Micromotion And Statistical Shape Modeling Of The Knee, William Fugit
Electronic Theses and Dissertations
The first purpose of this thesis was to compare the amount of micromotion seen in the femoral stem in a revision total hip arthroplasty between simple loading conditions and loading conditions derived from activities of daily living, through the use of experimental and computational methods. The amount of micromotion at the bone-implant interface was larger for activities of daily living, with ranges of 200μm more than the largest simple loading conditions. The second purpose of this thesis was to compare measurements of accuracy in a statistical shape model between individual bone and joint-level models, specifically for the knee. Using computational …
Cementless Tibial Base Micromotion During Activities Of Daily Living, Hayden Wilson
Cementless Tibial Base Micromotion During Activities Of Daily Living, Hayden Wilson
Electronic Theses and Dissertations
Initial stability of cementless total knee replacement (TKR) components is directly related to long-term fixation and success, as excess motion hinders bony ingrowth. To assess implant stability, there is a need for more physiologically accurate loading conditions, incorporating forces and displacements in all 6 degrees-of-freedom found in the knee joint, as well as understanding the impact of femoral flexion on conformity of tibiofemoral articulation. Understanding how different activities of daily living generate tibial micromotion yields insight into surgical technique considerations, and rehabilitation strategies post-operatively. ASTM F3141-15, which specifies knee flexion, Internal-External moment, Medial-Lateral, Anterior-Posterior and Superior-Inferior forces during gait and …