PROBLEM TO BE SOLVED: To improve efficiency of diagnosis on hip joint dislocation.SOLUTION: In an examination device 1, a moving image acquisition part 110 acquires a moving image including in a subject a marker attached to the lower extremity of a person to be examined who repeats motions with the hip joint as a point of support. A trajectory acquisition part 111 acquires a trajectory of positional coordinates of the marker in the moving image. A modeling part 112 models the trajectory with a circular arc based on the positional coordinates of the trajectory. A determination part 113 determines a suspected hip joint dislocation based on the result of comparison between a deviation amount of modeling parameters of each circular arc approximating the trajectory of each motion of the lower extremity and a threshold for determining whether or not the person to be examined is suspected to have hip joint dislocation.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】股関節脱臼の診断の効率を向上する。【解決手段】検査装置1において、動画取得部110は、股関節を支点とする運動を繰り返す被検者の下肢に付されたマーカを被写体に含む動画像を取得する。軌跡取得部111は、動画像におけるマーカの位置座標の軌跡を取得する。モデル化部112は、軌跡の位置座標に基づいて、軌跡を円弧でモデル化する。判定部113は、下肢の各動作の軌跡それぞれを近似する各円弧のモデル化パラメータのずれ量と、被検者に股関節脱臼の疑いがあるか否かを判定するための閾値との比較結果に基づいて、股関節脱臼の疑いを判定する。【選択図】図3
