We are trying to create a novel musculoskeletal humanoid robot which has a humanlike structure. In this paper, we present a new knee joint which is usually simplified in robotics for high controllability. The knee joint has three human mimetic points, patella, screw-home mechanism and four-linked linkage. Patella is for a longer moment arm. Screwhome mechanism is for locking knee joint. Four-linked linkage is for making humanlike motion. Furthermore, we confirmed those performances by three experiments.

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