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This project provides the musculoskeletal model of the cat hindlimb. A three-dimensional model of the cat hindlimb skeleton was created using CT images obtained from one male adult cat. The two-dimensional CT images were converted into a three-dimensional


This project provides the musculoskeletal model of the cat hindlimb. A three-dimensional model of the cat hindlimb skeleton was created using CT images obtained from one male adult cat. The two-dimensional CT images were converted into a three-dimensional model using an image processing software package called 3D Doctor (Able Software Corp., USA). The model of the cat hindlimb consisted of five rigid bodies – pelvis, thigh, shank, foot, and the digits – and 13 DOF. The pelvis was represented as a 6-DOF free joint, the hip as a 3-DOF ball-and-socket joint, the knee as a 1-DOF hinge joint, the ankle as a 2-DOF universal joint, and the metatarsophalangeal joint as a 1-DOF hinge joint. Muscle origin and insertion sites were determined using published anatomical records. Via points and wrapping surfaces were added to provide an anatomically realistic path for each muscle-tendon unit (MTU).
Physiological parameters for the model of muscle-tendon actuation (i.e., peak isometric muscle force and the corresponding optimal muscle-fiber length and pennation angle as well as tendon slack length) were obtained from the literature.
Associated publication includes more detail regarding modeling process and results of the study.

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