The human knee joint bends during gait, running or similar dynamic activity. During such activity the ligaments and menisci provide joint stability. It is well know that the collagen fibers in knee ligaments are aligned parallel to the primary loading direction. In the knee meniscus, the fibers are aligned specifically to assist in the in vivo loading conditions. The human menisci are firmly attached to the tibia by means of ligamentous structures known as meniscal attachments [1]. Meniscal attachments are best modeled as fiber composite materials where the matrix is the ground substance and the collagen fibers are the reinforcement. The load is primarily transferred to the insertion sites which are designed to reduce the stress concentrations caused by the load transfer across the attachment-bone interface [1]. Determination of the transverse properties of human meniscal attachments will aid in the development of three dimensional knee joint models in which the attachments are treated as transversely isotropic, hyperelastic [2].

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