A study of tibial vibrations during the tibial resection procedure of total knee arthroplasty
Morris, Angela Lynn
Master of Science
Vibrations of the tibia induced during the tibial resection procedure of Total Knee Arthroplasty are studied. Experimental modal analysis, performed on cadaver specimens, shows that natural frequencies of the in-situ tibia occur at 250, 350, and 650 Hz. A finite element beam model of the tibia, which consists of 3-D elements with varying material and geometrical properties, is used. The model indicates that the first bending mode of the in-situ tibia may occur below 100 Hz. The cadaver specimens are then cut with an oscillating saw to observe the effect of the oscillating saw on the vibrational characteristics. When the tibial resection is performed with the oscillating saw, it is shown that the oscillating saw excites the resonant frequencies of the in-situ tibia.