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