It was reported that guidewire tip detachment occurred.The stenosed target lesion was located in the mildly tortuous and mildly calcified knee vascular.A 185cm pt2 guidewire was used for delivery.However, during procedure, it was noted that the guidewire was completely detached 5 centimeters from the tip.The device was removed by snaring.The procedure was completed with a different device.There were no patient complications nor injuries reported.