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