Fixed bearing knee replacements have a fixed polyethylene tibial insert locked with the tibial tray.


Fixed- or mobile-bearing?

This is in comparison to knee replacements that are mobile-bearing, where the insert is free to move. Fixed bearing prostheses are recommended for the older patient who has less requirement for mobility.


Knee replacement surgery

A discussion about the key issues relating to knee replacement.



Increased risk of aseptic loosening for 43,525 rotating-platform vs. fixed-bearing total knee replacements. Gothesen O, Lygre SHL, Lorimer M, Graves S and Furnes O. Acta Orthop. 2017 Nov; 88(6): 649–656.

Mobile bearing and fixed bearing total knee arthroplasty Capella M, Dolfin M and Saccia F. Ann Transl Med. 2016 Apr; 4(7): 127.

Fixed or mobile-bearing total knee arthroplasty. Huang C-H, Liau J-J and Cheng C-K. J Orthop Surg. 2007; 2: 1.

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