The risk in reaching and possibly damaging the vital areas in {TAIL ~ the posterior section} of {HEAD ~ the knee} is greatly reduced 
The risk in reaching and possibly damaging the vital areas in { TAIL ~ the posterior section } of { HEAD ~ the knee } is greatly reduced
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH