This was the old alumina head. ceramic head makes better sense metal head.
Put your money on the bearing and do a good cemented stem to avoid one more failure mode at the taper
Thursday 30 January 2020
scope assisted tibial plataeu fracture fixation in a 90 year old
Using an acl jig the depression is elevated and stabilised with raft screws. bone cement was used to support and fill the tunnel and mobilised day one with an unloader brace 
complex varus knee- posterior medial subluxed knee
65 year old RA knee with subluxed rt knee.
Although the initial x-ray looks like a posteriormedailly dislocated knee. tmanual reduction and xray and stress shows intact LCL and MCL making the surgery simple with standard PS and tibial wedge and stem
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