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