Construction-conditioned rollback in total knee replacement: fluoroscopic results

• Autorzy: Wachowski M. M. , Fiedler C. , Walde T. A. , Balcarek P. , Schuttrumpf J. P. , Frosch S. , Frosch K. H. , Fanganel J. , Gezzi R. , Kubein-Meesenburg D. , Nägerl H.
• Języki publikacji: EN

Abstrakty

EN

Firstly, the way of implementing approximatively the initial rollback of the natural tibiofemoral joint (TFJ) in a total knee replacement (AEQUOS G1 TKR) is discussed. By configuration of the curvatures of the medial and lateral articulating surfaces a cam gear mechanism with positive drive can be installed, which works under force closure of the femoral and tibial surfaces. Briefly the geometric design features in flexion/extension are described and construction-conditioned kinematical and functional properties that arise are discussed. Due to a positive drive of the cam gear under the force closure during the stance phase of gait the articulating surfaces predominantly roll. As a result of rolling, a sliding friction is avoided, thus the resistance to motion is reduced during the stance phase. Secondly, in vivo fluoroscopic measurements of the patella tendon angle during flexion/extension are presented. The patella tendon angle/ knee flexion angle characteristic and the kinematic profile in trend were similar to those observed in the native knee during gait (0°–60°).

Słowa kluczowe

EN

total knee replacement; kinematic profile; rollback; roll-back fluoroscopy; patella tendon angle; kinematics; knee

PL

staw kolanowy; endoproteza; kinematyka kolana; fluoroskopia

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2011
• Tom: Vol. 13, no. 3
• Strony: 35--42
• Opis fizyczny: Bibliogr. 26 poz., il.

Twórcy

autor

Wachowski M. M.

autor

Fiedler C.

autor

Walde T. A.

autor

Balcarek P.

autor

Schuttrumpf J. P.

autor

Frosch S.

autor

Frosch K. H.

autor

Fanganel J.

autor

Gezzi R.

autor

Kubein-Meesenburg D.

autor

Nägerl H.

• Department of Trauma Surgery, Plastic and Reconstructive Surgery, University of Göttingen, Germany,

Bibliografia

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