The Effects Of Surface Curvature On Biomechanical Behaviour Of Articular Cartilage

Tan, Mean Yee (2015) The Effects Of Surface Curvature On Biomechanical Behaviour Of Articular Cartilage. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Osteoarthritis (OA) occurs even more frequently nowaday on the middle aged group, the senior citizen group and even the youngsters will also affected by this disease. Osteoarthritis was characterised by the pain of joint and malfunction of the joint, and then in further stage will be the joint contractures, muscles atrophy and limb deformity spine. The main causes for Osteoarthritis to occurs will be due to the degeneration of articular cartilage. Therefore, it is important to understand the behaviour of the cartilage. In the previous experimental studies, the cartilage are often been assumed to be flat. However, the actual cartilage surface in human synovial joint will be in curvature shape. Hence, this report will determine the effect of surface curvature on cartilage behavior by using the indentation test and finite element analysis. Finite element model with several radii of surface curvature will be used to compare with the analysis of model with flat surface. Based on the comparison result, the percentage of difference by comparing the smallest cartilage surface of convex 15 mm radius with the flat cartilage surface for contact pressure is 10 % while for the pore pressure will be 6 %. This shows that the surface curvature of cartilage does affect the biomechanical behaviour of cartilage.

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