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