A preferred material for cuff retention ring 40 is a cobalt nickel chromium molybdenum alloy known as MP 35N, but {HEAD ~ other high strength biocompatible metals} including alloys of cobalt or of {TAIL ~ titanium} may be used 
A preferred material for cuff retention ring 40 is a cobalt nickel chromium molybdenum alloy known as MP 35N , but { HEAD ~ other high strength biocompatible metals } including alloys of cobalt or of { TAIL ~ titanium } may be used
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH