In order to improve an orthopedic fixation device for connecting a first anchoring element (12) which has a connecting section (26) and can be anchored in or on a bone (18) to a connecting element (14) which can be connected to a second anchoring element which can be anchored in or on a bone, wherein the fixation device is movable relative to the connecting element and to the anchoring element in an adjusting position and can be secured on the connecting element and on the anchoring element in a fixing position, such that the connecting element can be secured on the anchoring element in a particularly simple manner it is suggested that a single tensioning member (50; 122; 166; 172) which is supported so as to be movable be provided for transferring the fixation device from the adjusting position into the fixing position and vice versa.