The device includes a frame which has {HEAD ~ an upper surface} to support {TAIL ~ the individual} to be subjected to traction 
to support
The device includes a frame which has { HEAD ~ an upper surface } to support { TAIL ~ the individual } to be subjected to traction
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH