Loading-rate dependent mechanical response of the human and porcine knee joints

Abstract eng:
The knee joints are subjected to changing loads during daily activities. The understanding of loading mechanisms within the joint may contribute to the prevention, diagnosis, and treatment of injury and disease. The load response of soft tissues, cartilages and menisci, depends on the loading-rate, showing different levels of fluid pressure load support at different loading rates. This response has been investigated with tissue discs, but not sufficiently examined within the entire joint. Computational simulation is an effective tool for studying this response, taking into account realistic contact conditions. The objective of the present study is to quantify the compression- rate dependence in the knee joint, which is thought to be mainly contributed by the fluid pressurization in the tissues. Computer simulations are being validated against laboratory tests. Results revealed a similar nonlinear compressive loading-rate-dependent mechanical response of the human and porcine knee joints.

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