Abstract
Very few reports addressed polyethylene tibial post and cone fractures requiring revision surgery. Up to our knowledge, this particular pattern of wear, involving 2 fracture areas simultaneously, has not been previously described.
A 70 year-old female developed a fracture involving both the tibial insert post and cone after a minor trauma after undergoing posterior-stabilized total knee replacement 4 years prior.
This unique pattern of wear may occur even after minor trauma.
We recommend having a low threshold to investigate minor trauma in this patient population, even years after undergoing primary knee arthroplasty.
•Between 6 and 12 % of primary Total knee arthroplasty (TKA) have failed within 10 years requiring revision surgery.•Instability is a common cause of revision total knee arthroplasty, with symptomatic instability occurring in less than 1–2 % of patients after primary TKA.•Revision rates were higher when the primary knee surgery was performed in patients who were less than 70 years of age.