Uncontrollable bleeding under tourniquet.
D002114:Calcinosis / Q000150:complications*; D005263:Femoral Artery; D006470:Hemorrhage / Q000209:etiology*; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D014111:Tourniquets / Q000009:adverse effects*; D014652:Vascular Diseases / Q000150:complications*