The apparatus is configured to minimize {HEAD ~ the influence} of other joints on {TAIL ~ the rotation analysis} 
on
The apparatus is configured to minimize { HEAD ~ the influence } of other joints on { TAIL ~ the rotation analysis }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL