The present invention is generally directed to apparatuses and methods for evaluating the amount of “{HEAD ~ play}” in {TAIL ~ a joint} 
in
The present invention is generally directed to apparatuses and methods for evaluating the amount of “ { HEAD ~ play } ” in { TAIL ~ a joint }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL