UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

The role of the patellar tendon angle and patellar flexion angle in the interpretation of sagittal plane kinematics of the knee after knee arthroplasty: A modelling analysis

Van Duren, BH; Pandit, H; Pechon, P; Hart, A; Murray, DW; (2018) The role of the patellar tendon angle and patellar flexion angle in the interpretation of sagittal plane kinematics of the knee after knee arthroplasty: A modelling analysis. The Knee , 25 (2) pp. 240-248. 10.1016/j.knee.2018.01.006. Green open access

[thumbnail of Hart_Sagittal Plane Knee Kinematics_Knee_Submission_2nd_Corrections_Submit_TC4.pdf]
Preview
Text
Hart_Sagittal Plane Knee Kinematics_Knee_Submission_2nd_Corrections_Submit_TC4.pdf - Accepted Version

Download (468kB) | Preview

Abstract

BACKGROUND: Many different measures have been used to describe knee kinematics. This study investigated the changes of two measures, the patellar tendon angle and the patellar flexion angle, in response to variations in the geometry of the knee due to surgical technique or implant design. METHODS: A mathematical model was developed to calculate the equilibrium position of the extensor mechanism for a particular tibiofemoral position. Calculating the position of the extensor mechanism allowed for the determination of the patellar tendon angle and patellar flexion angle relationships to the knee flexion angle. The model was used to investigate the effect of anterior-posterior position of the femur, change in joint line, patellar thickness (overstuffing, understuffing), and patellar tendon length; these parameters were varied to determine the effect on the patellar tendon angle/knee flexion angle and patellar flexion angle/knee flexion angle relationships. RESULTS: The patellar tendon angle was a good indicator of anterior-posterior femoral position and change in patellar thickness, and the patellar flexion angle a good indicator of change in joint line, and patellar tendon length. CONCLUSIONS: The patellar tendon angle/knee flexion angle relationship was found to be an effective means of identifying abnormal kinematics post-knee arthroplasty. However, the use of both the patellar tendon angle and patellar flexion angle together provided a more informative overview of the sagittal plane kinematics of the knee.

Type: Article
Title: The role of the patellar tendon angle and patellar flexion angle in the interpretation of sagittal plane kinematics of the knee after knee arthroplasty: A modelling analysis
Location: Netherlands
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.knee.2018.01.006
Publisher version: https://doi.org/10.1016/j.knee.2018.01.006
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Arthroplasty, Kinematics, Knee, Modelling, Patellar flexion angle, Patellar tendon angle, TKA, TKR, Arthroplasty, Replacement, Knee, Biomechanical Phenomena, Humans, Knee Joint, Models, Theoretical, Patella, Patellar Ligament
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci > Department of Ortho and MSK Science
URI: https://discovery.ucl.ac.uk/id/eprint/10084925
Downloads since deposit
157Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item