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Related Experiment Videos

Resection arthroplasty for failed patellar components.

Carlos J Lavernia1, Jose C Alcerro, Michael K Drakeford

  • 1Orthopaedic Institute at Mercy Hospital, 3659 South Miami Avenue Suite 4008, Miami, FL 33133, USA. info@orthomercy.com

International Orthopaedics
|October 29, 2008
PubMed
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Revision total knee arthroplasty (TKA) patients with insufficient bone stock can have patellar component removal without reimplantation. This procedure avoids complications like quadriceps lag and extension weakness, offering an acceptable alternative.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Patellar component revision is necessary in a small percentage of total knee arthroplasties (TKA).
  • Insufficient bone stock presents a challenge for reimplantation during revision TKA.

Purpose of the Study:

  • To evaluate the outcomes of patellar component resection without reimplantation in revision TKA cases with inadequate bone stock.

Main Methods:

  • Review of 1,401 primary TKAs, identifying 44 with patellar component revision.
  • Clinical data, including Hospital for Special Surgery (HSS) scores, were collected for nine knees lacking bone stock for reimplantation.
  • Follow-up evaluation included medical records and radiographs.

Main Results:

  • Seven of nine knees had good to excellent outcomes after patellar component resection without reimplantation.

Related Experiment Videos

  • Two knees had fair outcomes.
  • No patients experienced quadriceps lag, extension weakness, or anterior knee pain, common complications of patellectomy.

    • Conclusions:

    • Patellar component resection without reimplantation is a viable and safe alternative in revision TKA when bone stock is insufficient.
    • This approach can prevent adverse outcomes associated with patellectomy.