{HEAD ~ Traction} is applied by the operator, usually patient 12, {TAIL ~ cycling ratchet handle} 84 
is applied by
{ HEAD ~ Traction } is applied by the operator , usually patient 12 , { TAIL ~ cycling ratchet handle } 84
HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH