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. 2012;20(4):230-4.
doi: 10.1590/S1413-78522012000400008.

Study on implant stability in cementless total knee arthroplasty

Luís Eduardo Passarelli Tírico  1 , Thiago Pasqualin  1 , José Otávio Pécora  1 , Riccardo Gomes Gobbi  1 , José Ricardo Pécora  1 , Marco Kawamura Demange  1
Affiliations

Study on implant stability in cementless total knee arthroplasty

Luís Eduardo Passarelli Tírico et al. Acta Ortop Bras. 2012.

Abstract

Objectives: Determine the stability of tibial and femoral components of 20 cementless knee arthroplasties with rotating platform.

Methods: The 20 patients (20 knees) underwent an analysis of dynamic radiographs with an image amplifier and maneuvers of varus and valgus which were compared to static frontal and lateral radiographs of the knees and analyzed by two experienced surgeons in a double-blind way.

Results: We could observe in this study that both methods showed very similar results for the stability of the tibial and femoral components (p<0.001) using the Kappa method for comparison.

Conclusion: The tibial component was more unstable in relation to the femoral component in both static and dynamic studies. Level of Evidence IV, Case Series.

Keywords: Biomechanics; Knee arthroplasty; Knee osteoarthritis; Knee prosthesis.

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Conflict of interest statement

All the authors declare that there is no potential conflict of interest referring to this article.

Figures

Figure 1
Figure 1
Static evaluation (radiography – A) and dynamic evaluation (radioscopy – B) of patient 7. Note that there are no signs of radiolucency or lysis in the components in the static analysis and that there is no movement of the components in the dynamic analysis
Figure 2
Figure 2
Dynamic evaluation (radioscopy) in neutral (A), varus (B) and valgus (C) of patient 11. Note radiolucent lines in the medial plateau in the static radioscopy. Note appearance of lateral radiolucency in the tibial component in the varus stress maneuver
Figure 3
Figure 3
Radiography of patient 16 showing signs of radiolucency in the medial and lateral plateau and around the centralization nail of the tibial component
See this image and copyright information in PMC

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References

    1. Keating EM, Meding JB, Faris PM, Ritter MA. Long-term follow-up of nonmodular total knee replacements. Clin Orthop Relat Res. 2002;(404):34–9. - PubMed
    1. Kelly MA, Clarke HD. Long-term results of posterior cruciate-substituting total knee arthroplasty. Clin Orthop Relat Res. 2002;(404):51–7. - PubMed
    1. Ma HM, Lu YC, Ho FY, Huang CH. Long-term results of total condylar knee arthroplasty. J Arthroplasty. 2005;20(5):580–4. - PubMed
    1. Font-Rodriguez DE, Scuderi GR, Insall JN. Survivorship of cemented total knee arthroplasty. Clin Orthop Relat Res. 1997;(345):79–86. - PubMed
    1. Ranawat CS, Flynn WF Jr, Saddler S, Hansraj KK, Maynard MJ. Long-term results of the total condylar knee arthroplasty. A 15-year survivorship study. Clin Orthop Relat Res. 1993;(286):94–102. - PubMed

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