An external fixation strut for use with an external fixation system, the external fixation strut comprising: a main body including an interior cavity, an end component, a first body component, and a second body component, the first and second body components (1504, 1506) coupled to and extending from the end component, the first and second body components (1504, 1506) being spaced apart such that a gap is formed on either side of the second body component adjacent to the first body component; a threaded rod at least partially positioned within the interior cavity of the main body; an actuator operatively coupled to the threaded rod so that, in use, rotation of the actuator causes the threaded rod to rotate; a first fixed arm immovably coupled to the main body; and a second movable arm threadably coupled to the threaded rod so that, in use, rotation of the threaded rod causes the second movable arm to move relative to the first fixed arm characterised in that each of the first fixed arm and the second movable arm include a first coupling component, a second coupling component, a first gap positioned between the first and second coupling components, and a second gap; wherein the first gap is arranged and configured to enable the first body component to pass therethrough and the second gap is arranged and configured to enable the second body component to pass therethrough so that when the first fixed arm and the second movable arm are coupled to the main body, the first coupling component is arranged and configured to be positioned about an outer surface of the main body and the second coupling component is arranged and configured to be positioned within the interior cavity of the main body. a main body including an interior cavity, an end component, a first body component, and a second body component, the first and second body components (1504, 1506) coupled to and extending from the end component, the first and second body components (1504, 1506) being spaced apart such that a gap is formed on either side of the second body component adjacent to the first body component; a threaded rod at least partially positioned within the interior cavity of the main body; an actuator operatively coupled to the threaded rod so that, in use, rotation of the actuator causes the threaded rod to rotate; a first fixed arm immovably coupled to the main body; and a second movable arm threadably coupled to the threaded rod so that, in use, rotation of the threaded rod causes the second movable arm to move relative to the first fixed arm characterised in that each of the first fixed arm and the second movable arm include a first coupling component, a second coupling component, a first gap positioned between the first and second coupling components, and a second gap; wherein the first gap is arranged and configured to enable the first body component to pass therethrough and the second gap is arranged and configured to enable the second body component to pass therethrough so that when the first fixed arm and the second movable arm are coupled to the main body, the first coupling component is arranged and configured to be positioned about an outer surface of the main body and the second coupling component is arranged and configured to be positioned within the interior cavity of the main body.