A coupling device, in particular for use in orthopedic surgery, is provided that includes a first coupling body (1) that is configured to be coupled to a first bone anchor (101), a second coupling body (2) that is configured to be coupled a second bone anchor (101'), a connection device (20, 20', 30) that is configured to connect the first coupling body (1) and the second coupling body (1'), wherein the connection device includes a first connection member (20) and a second connection member (20') a distance of which along a connection axis is adjustable and a length adjustment member (30) that is configured to be actuated in a first direction whereby the distance between the first connection member (20) and the second connection member (20') is increased and in a second direction whereby the distance between the first connection member (20) and the second connection member (20') is decreased.
