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