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In Vitro Biomechanical Characterization of Tibiofemoral Rotations and Translations Following Distal Bony Realignment

Mani, Saandeep
http://rave.ohiolink.edu/etdc/view?acc_num=akron1280155331

Abstract Details

2010, Master of Science in Engineering, University of Akron, Biomedical Engineering.
Patellofemoral pain primarily affects young, active adults, and severely limits patient's activity levels. Distal bony realignment is one of the commonly performed surgical options in which the tibial tuberosity is osteotomized and shifted medially or anteromedially to reduce the pressure applied to the cartilage on the lateral facet of the patella. The specific aim of this study was to characterize how medial and anteromedial realignment of the tibial tuberosity influences tibiofemoral kinematics. Cadaveric knees were statically positioned at 40, 60 and 80, and static quadriceps muscle forces of 586N and hamstring forces of 100N were applied. A 3D electromagnetic tracking system was used to acquire 3D position and orientation of the patella, tibia and femur during the experiment. A MATLAB algorithm was developed to calculate the valgus rotation, external rotation, lateral position and anterior position of the tibia and lateral tilt, lateral rotation, flexion angle and lateral position of the patella. A joint coordinate system of the knee was defined based on digitized anatomical landmarks. Ten cadaveric knees were tested and our results indicated that medialization and anteromedialization of the tibial tuberosity rotated the tibia externally by 6° to 14°, shifted the tibia posteriorly by 1mm to 6mm and decreased the valgus rotation of the tibia by 1° to 2° (p < 0.05). The results also indicated that loading the hamstring muscles might exacerbate the condition in patients suffering from patellofemoral pain syndrome due to malalignment.
John Elias, PhD (Advisor)
120 p.
Biomedical Research
tibial tuberosity realignment; joint coordinate system; patellofemoral pain

Recommended Citations

Citations

  • Mani, S. (2010). In Vitro Biomechanical Characterization of Tibiofemoral Rotations and Translations Following Distal Bony Realignment [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1280155331

    APA Style (7th edition)

  • Mani, Saandeep. In Vitro Biomechanical Characterization of Tibiofemoral Rotations and Translations Following Distal Bony Realignment. 2010. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1280155331.

    MLA Style (8th edition)

  • Mani, Saandeep. "In Vitro Biomechanical Characterization of Tibiofemoral Rotations and Translations Following Distal Bony Realignment." Master's thesis, University of Akron, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1280155331

    Chicago Manual of Style (17th edition)

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© 2010, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.