PROBLEM TO BE SOLVED: To provide a surgical instrument for artificial knee joint replacement surgery that is superior in operability.SOLUTION: A surgical instrument for artificial knee joint replacement surgery 1 is configured by including: an index part 2a serving as a reference when fixing a resection guide 80 a body part 4 provided or fixed with the index part 2a a swinging part 10 having an abutment part coming into abutment with patients condyles 101a, 101b and constituted so as to swing to the body part 4, and in which the position and angle to the condyles 101a, 101b are determined by the abutment part coming into abutment with the condyles 101a, 101b and a switching mechanism 20 having an operated part 30 operated by a user, and switching between a fixed state where the swinging part 10 is fixed to the body part 4 by the operated part 30 being operated only along a predetermined direction and a release state where the swinging part 10 becomes a swingable state to the body part 4.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】操作性に優れた人工膝関節置換術用手術器具を提供する。【解決手段】切除ガイド80を固定する際の基準となる指標部2aと、指標部2aが設けられており又は固定されている本体部4と、患者の顆101a,101bに当接する当接部を有するとともに本体部4に対して揺動するように構成され当接部が顆101a,101bに当接することにより顆101a,101bに対する位置及び角度が決定する揺動部10と、ユーザに操作される被操作部30を有し被操作部30が所定方向に沿ってのみ操作されることにより本体部4に対して揺動部10が固定される状態である固定状態と本体部4に対して揺動部10が揺動可能な状態となるリリース状態とを切り替える切替機構20と、を備えた人工膝関節置換術用手術器具1を構成する。【選択図】図1
