Extract
Dislodgment of a polyethylene insert from the tibial baseplate
following total knee arthroplasty is an uncommon event. To our knowledge, it
has been described in only four reports in the English-language
literature1-4.
The extremely low rate of this complication contrasts with the frequent
dissociation of polyethylene liners from total hip replacements, as reported
at our institution5
and by others6,
occurring in association with so-called first-generation uncemented, modular
acetabular cup designs.