The influence of isolated femur and tibia rotations on patellar tendon stress: A sensitivity analysis using finite element analysis

The purpose of this study was to determine the influence of frontal and transverse plane rotations of the femur and tibia on peak maximum principal stress in the patellar tendon. Using finite element modeling, patellar tendon stress profiles of eight healthy individuals were obtained during a simula...

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Bibliographic Details
Published in:Journal of orthopaedic research 2023-02, Vol.41 (2), p.271-277
Main Authors: Park, Kyungmi, Keyak, Joyce H., Powers, Christopher M.
Format: Article
Language:English
Subjects:
Biomechanical Phenomena
Femur
Finite Element Analysis
Humans
Knee Joint
Patellar Ligament
patellar tendon
sensitivity analysis
stress
tendinopathy
Tibia
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Summary:The purpose of this study was to determine the influence of frontal and transverse plane rotations of the femur and tibia on peak maximum principal stress in the patellar tendon. Using finite element modeling, patellar tendon stress profiles of eight healthy individuals were obtained during a simulated squatting task (45° of knee flexion). The femur and tibia of each model were rotated 10° (in 2° increments) along their respective axes beyond that of the natural degree of rotation. This process was repeated for the transverse plane (internal and external rotation) and frontal plane (adduction and abduction). Quasi‐static loading simulations were performed to quantify peak maximum principal stress in patellar tendon. Internal and external rotations of the femur and tibia that exceeded 4° beyond that of the natural rotation resulted in progressively greater patellar tendon stress (p 
ISSN:0736-0266
1554-527X
DOI:10.1002/jor.25353