Related Experiment Video
Updated: May 3, 2026
In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
Published on: May 5, 2023
Study on implant stability in cementless total knee arthroplasty
Luís Eduardo Passarelli Tírico1, Thiago Pasqualin1, José Otávio Pécora1
1Institute of Orthopedics and Traumatology of Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo.
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.
