PROBLEM TO BE SOLVED: To provide a connection structure of an upper-side lower extremity prosthesis part and a lower-side lower extremity prosthesis part in a lower extremity prosthesis providing an optimal wearing state with which a user can favorably walk and easily and quickly performing an adjustment according to a situation required by a user.SOLUTION: The connection structure of the upper-side lower extremity prosthesis part to be worn on a body, and the lower-side lower extremity prosthesis part that is connected to the upper-side lower extremity prosthesis part to constitute a lower extremity prosthesis, and having a grounding part at a lower end part comprises: a connection part 3 provided on one of the lower-side lower extremity prosthesis part and the upper-side lower extremity prosthesis part a fitting object connection part 4 that is provided on the other and fitted to the connection part 3 and retaining bodies 6 and 7 that project to fitting object holes of the fitting object connection parts 4 and retain the connection part 3 located in the fitting object holes.COPYRIGHT: (C)2014,JPO&INPIT【課題】歩行が良好に行える最適な装着状態が得られ、しかも、ユーザーが要求する状況に応じた調整が簡易且つ迅速に行える、義足における上側義足部と下側義足部との連結構造を提供する。【解決手段】身体に装着される上側義足部と、この上側義足部に連結されて義足を構成し、下端部に接地部を有する下側義足部の連結構造であって、前記下側義足部若しくは前記上側義足部のいずれか一方に設けられる連結部3と、他方に設けられ連結部3に被嵌する被嵌連結部4とで構成され、被嵌連結部4の前記被嵌孔内に突出して前記被嵌孔内に位置する連結部3を保持する保持体6,7を有するものである。【選択図】図2
