{TAIL ~ A distraction screw} is mounted through the cylinder and with {HEAD ~ one end} resting on the chamber 
{ TAIL ~ A distraction screw } is mounted through the cylinder and with { HEAD ~ one end } resting on the chamber
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH