A mobile-bearing knee replacement or arthroplasty is a knee implant where the plastic component (that replaces the meniscus) is mobile.
What is the benefit of a mobile bearing knee replacement?
The polyethylene tibial insert is designed to facilitate movement of the insert relative to the tibial tray upon which is sits. This increased mobility suggests that it would be more suitable for the younger more active patient.
Peer-reviewed papers
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Quote:
"...the theoretical advantages of [mobile bearing] inserts in [total knee arthroplasty] have not been proven by clinical studies and scientific literature....No significant advantages in term of functional and radiological outcome, ROM, pain and patient satisfaction were detected by large cohort studies"
Citation: Capella M, Dolfin M, Saccia F. Mobile bearing and fixed bearing total knee arthroplasty. Ann Transl Med. 2016 Apr;4(7):127. doi: 10.21037/atm.2015.12.64. PMID: 27162777; PMCID: PMC4842394.
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