A telescopic strut for use with an external fixator comprising an axially extending rod an axially extending tube moveably recurring the rod for varying the length of the rod and tube combination along a longitudinal axis the tube having first and second ends, the second end having a pin extending therethrough a locking system mounted on the tube first end for adjusting the position of the rod in the tube and fixing the length of the rod and tube combination a coupling element having a tubular sleeve with a threaded outer surface mounted on an outer surface of the second end of the tube, the sleeve having two diametrically opposed slots receiving the pin and an adjustment element threadably mounted on the sleeve outer surface for axial movement along the axis, the adjustment element having a surface contacting the pin to limit the movement of the pin in the slots.
