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Title: Tibio-femoral and patello-femoral joint kinematics during navigated total knee arthroplasty with patellar resurfacing
Authors: Belvedere, Claudio ×
Ensini, Andrea
Leardini, Alberto
Dedda, Vincenza
Feliciangeli, Alessandro
Cenni, Francesco
Timoncini, Antonio
Barbadoro, Paolo
Giannini, Sandro #
Issue Date: Aug-2014
Publisher: Springer International
Series Title: Knee Surgery, Sports Traumatology, Arthroscopy vol:22 issue:8 pages:1719-1727
Abstract: PURPOSE:
In total knee arthroplasty, surgical navigation systems provide tibio-femoral joint (TFJ) tracking for relevant bone preparation, disregarding the patello-femoral joint (PFJ). Therefore, the important intra-operative assessment of the effect of component positioning, including the patella, on the kinematics of these two joints is not available. The objective of this study is to explore in vivo whether accurate tracking of the patella can result in a more physiological TFJ and PFJ kinematics during surgery.
METHODS:
Ten patients underwent navigated knee replacement with patellar resurfacing. A secondary system was used to track patellar motion and PFJ kinematics using a special tracker. Patellar resection plane position and orientation were recorded using an instrumented probe. During all surgical steps, PFJ kinematics was measured in addition to TFJ kinematics.
RESULTS:
Abnormal PFJ motion patterns were observed pre-operatively at the impaired knee. Patellar resection plane orientation on sagittal and transverse planes of 3.9° ± 9.0° and 0.4° ± 4.1° was found. A good restoration of both TFJ and PFJ kinematics was observed in all replaced knees after resurfacing, in particular the rotations in the three anatomical planes and medio-lateral patellar translation.
CONCLUSIONS:
Patella tracking results in nearly physiological TFJ and PFJ kinematics in navigated knee arthroplasty with resurfacing. The intra-operative availability also of PFJ kinematics can support the positioning not only of the patellar component in case of resurfacing, but also of femoral and tibial components.
ISSN: 0942-2056
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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