Other embodiments provide data related to movement of {HEAD ~ the tibia} in {TAIL ~ other degrees} of freedom 
Other embodiments provide data related to movement of { HEAD ~ the tibia } in { TAIL ~ other degrees } of freedom
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH