Clinical Orthopaedics and Related Research®

, Volume 469, Issue 1, pp 154–159 | Cite as

Liner Exchange and Bone Grafting: Rare Option to Treat Wear & Lysis of Stable TKAs

  • John J. Callaghan
  • Eric R. Reynolds
  • Nicholas T. Ting
  • Devon D. Goetz
  • John C. Clohisy
  • William J. Maloney
Symposium: Papers Presented at the Annual Meetings of the Knee Society

Abstract

Background

Liner exchange and bone grafting are commonly performed for wear and osteolysis around well-fixed modular acetabular components that otherwise would require structural allografting and revision THA. However, liner exchange in the face of substantial lysis around TKA has been performed rarely with reports of failure rates of up to 25% at 3 year followup.

Questions/purposes

We therefore evaluated the technique of liner exchange and bone grafting for cases of wear and extensive osteolysis around TKAs in which the components were well-fixed and well-aligned to determine (1) rerevision rates; (2) fate of the bone graft; (3) radiographic loosening rates; and (4) functional scores.

Methods

We retrospectively reviewed 22 patients (25 knees) who underwent revision TKA with exchange of the modular polyethylene insert and bone grafting in cases with well-fixed components and large areas of osteolysis (up to 54 cm2 on a single projection) at the time of revision. The average area of osteolysis was 21 cm2 and 10 cm2 on the AP projection of the femur and tibia, respectively. On the lateral projection, the average area of osteolysis for the femur and tibia was 22 cm2 and 9.3 cm2. Minimum clinical and radiographic followup was 22 and 22 months (average, 61 and 59; range, 22–142 and 22–130, respectively).

Results

One of the 25 knees was revised for aseptic loosening or recurrence of osteolysis. On radiographs, 84.6% and 70% of femoral and tibial osteolytic lesions, respectively, showed evidence of complete or near complete graft incorporation. The remaining lesions showed evidence of partial graft incorporation with the exception of one tibial lesion, which was in the revised case. All other components were well fixed with no evidence of radiographic loosening.

Conclusions

In this selected series of cases with extensive osteolysis around well-fixed and well-aligned TKAs, liner exchange and bone grafting provided durable midterm results with extensive graft incorporation.

Level of Evidence

Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.

Notes

Acknowledgments

We thank Steve S. Liu, MD, Matthew E. Lovell, MD, Stephen G. Taylor, MD, Craig J. Della Valle, MD, and Aaron G. Rosenberg, MD for their role in data collection and analysis, manuscript preparation and revision, as well as contributing cases.

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Copyright information

© The Association of Bone and Joint Surgeons® 2010

Authors and Affiliations

  • John J. Callaghan
    • 1
    • 2
  • Eric R. Reynolds
    • 1
  • Nicholas T. Ting
    • 3
  • Devon D. Goetz
    • 4
  • John C. Clohisy
    • 5
  • William J. Maloney
    • 6
  1. 1.University of IowaIowa CityUSA
  2. 2.VA Medical CenterIowa CityUSA
  3. 3.Rush University Medical CenterChicagoUSA
  4. 4.Des Moines Orthopaedic SurgeonsWest Des MoinesUSA
  5. 5.Washington University-St LouisSt LouisUSA
  6. 6.Stanford UniversityPalo AltoUSA

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