Massive femoral osteolytic lesion secondary to disengagement of a total knee tibial locking pin: case report

J Knee Surg. 2007 Jul;20(3):241-4. doi: 10.1055/s-0030-1248050.

Abstract

The Anatomic Modular Knee (AMK; Depuy, Warsaw, Ind) was one of the first designs to incorporate a modular locking mechanism for the tibial insert; fixation was secured using a screw-in tibial tray-locking pin. This case report describes a patient who presented with instability and worsening knee pain 15 years following a primary total knee arthroplasty using the AMK prosthesis. Radiographs and intraoperative assessment revealed proximal migration of the tibial tray-locking pin into the medial femoral condyle resulting in a large osteolytic defect.

Publication types

  • Case Reports

MeSH terms

  • Arthralgia / etiology
  • Arthralgia / surgery
  • Arthroplasty, Replacement, Knee / adverse effects*
  • Arthroplasty, Replacement, Knee / instrumentation
  • Bone Nails / adverse effects*
  • Femur / diagnostic imaging*
  • Femur / surgery
  • Foreign-Body Migration / complications*
  • Foreign-Body Migration / diagnostic imaging
  • Foreign-Body Migration / surgery
  • Humans
  • Joint Instability / etiology
  • Joint Instability / surgery
  • Knee Joint / diagnostic imaging
  • Knee Joint / surgery
  • Knee Prosthesis
  • Male
  • Middle Aged
  • Osteolysis, Essential / diagnostic imaging
  • Osteolysis, Essential / etiology*
  • Osteolysis, Essential / surgery
  • Prosthesis Failure
  • Radiography
  • Reoperation