The effect of femoral component external rotation on tibial rotation in total knee arthroplasty

Author

Sherwood, C.P. ; Zhang, A.X. ; Petrella, A.J. ; Miller, M.C. ; Berger, R.A. ; Rubash, H.E.

Author_Institution

Dept. of Bioeng., Pittsburgh Univ., PA, USA

fYear

1996

fDate

29-31 Mar 1996

Firstpage

311

Lastpage

312

Abstract

External rotation of the femoral component has been suggested as a means of improving patellar tracking in total knee arthroplasty (TKA), but this procedure may also affect the tibiofemoral joint. TKA was performed on five cadaveric knee specimens. Each specimen was tested with femoral component external rotations of 0.0°, 2.5° and 5.0°, and 6 DOF kinematics were measured. In three of the specimens, the tibial external rotation angle increased with femoral component rotation. The magnitude of the change was always less than the magnitude of the femoral rotation. Soft tissue constraints appear to override kinematic constraints imposed by femoral component rotation

Keywords

biomechanics; bone; kinematics; prosthetics; rotation; cadaveric knee specimens; femoral component external rotation effect; kinematic constraints; patellar tracking improvement; soft tissue constraints; tibial rotation; tibiofemoral joint; total knee arthroplasty; Biological tissues; Biomedical engineering; Kinematics; Knee; Leg; Mechanical engineering; Orthopedic surgery; Pain; Rotation measurement; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering Conference, 1996., Proceedings of the 1996 Fifteenth Southern

Conference_Location

Dayton, OH

Print_ISBN

0-7803-3131-1

Type

conf

DOI

10.1109/SBEC.1996.493211

Filename

493211