The other end of the prosthesis is shaped to replace {HEAD ~ the other end} of {TAIL ~ the surgically removed bone segment} 
of
The other end of the prosthesis is shaped to replace { HEAD ~ the other end } of { TAIL ~ the surgically removed bone segment }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL