Thus, {HEAD ~ reduced risk} of possible damage to the vital area in {TAIL ~ the back} of the knee, and reduced tourniquet time, are primary advantages of the tack device 
Thus , { HEAD ~ reduced risk } of possible damage to the vital area in { TAIL ~ the back } of the knee , and reduced tourniquet time , are primary advantages of the tack device
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH