Sequential 3D analysis of patellofemoral kinematics from biplanar x-rays: In vitro validation protocol.
TypeArticles dans des revues avec comité de lecture
Background: Developing criteria for assessing patellofemoral kinematics is crucial to understand, eval-uate, and monitor patellofemoral function. The objective of this study was to assess a sequential 3Danalysis method based on biplanar radiographs, using an in vitro protocol.Hypothesis: Biplanar radiography combined with novel 3D reconstruction methods provides a reliableevaluation of patellofemoral function, without previous imaging.Material and methods: Eight cadaver specimens were studied during knee flexion cycles from 0◦to60◦induced by an in vitro simulator. The protocol was validated by investigating sequential and con-tinuous motion using an optoelectronic system, evaluating measurement accuracy and reproducibilityusing metallic beads embedded in the patella, and comparing the 3D patellar geometry to computedtomography (CT) images.Results: The differences in position between the sequential and continuous kinematic analyses were lessthan 1 mm and 1◦. The protocol proved reliable for tracking several components of knee movements,including patellar translations, flexion, and tilt. In this analysis, uncertainty was less than 2 mm for trans-lations and less than 3◦for rotations, except rotation in the coronal plane. For patellar tilt, uncertaintywas 5◦. Mean difference in geometry was 0.49 mm.Discussion: Sequential analysis results are consistent with continuous kinematics. This analysis methodprovides patellar position parameters without requiring previous CT or magnetic resonance imaging.A clinical study may deserve consideration to identify patellofemoral kinematic profiles and positioncriteria in vivo.Level of evidence: IV, experimental study.
Files in this item
Showing items related by title, author, creator and subject.
3D Sequential Kinematics of the Femoro-Tibial Joint of Normal Knee from Multiple Bi-planar X-rays: Accuracy and Repeatability LANGLOIS, Karine; PILLET, Hélène; LAVASTE, François; ROCHCONGAR, Goulven; ROUCH, Philippe; THOREUX, Patricia; SKALLI, Wafa (ELSEVIER, 2018)Background: Several methods can be used to assess joint kinematics going from optoelectronic motion analysis to biplanar fluoroscopy. The aim of the present work was to evaluate the reliability of the use of biplane ...
Assessing the accuracy and precision of manual registration of both femur and tibia using EOS imaging system with multiple views LANGLOIS, Karine; PILLET, Hélène; LAVASTE, François; ROCHCONGAR, Goulven; ROUCH, Philippe; THOREUX, Patricia; SKALLI, Wafa (Taylor & Francis, 2015)1. Introduction The EOS imaging system produces two simultaneous X-rays of a subject. Both views are used for the generation of a sub- ject-specific 3D skeletal model. This model then allows to obtain quantitative ...
Tibio-femoral joint constraints for bone pose estimation during movement using multi-body optimization BERGAMINI, Elena; PILLET, Hélène; HAUSSELLE, Jérôme; THOREUX, Patricia; GUERARD, Sandra; CAMOMILLA, Valentina; CAPPOZZO, Aurelio; SKALLI, Wafa (elsevier, 2011)When using skin markers and stereophotogrammetry for movement analysis, bone pose estimation may be performed using multi-body optimization with the intent of reducing the effect of soft tissue artefacts. When the joint ...
Femur, tibia and fibula bone templates to estimate subject-specific knee ligament attachment site locations PILLET, Hélène; BERGAMINI, Elena; ROCHCONGAR, Goulven; CAMOMILLA, Valentina; THOREUX, Patricia; ROUCH, Philippe; CAPPOZZO, Aurelio; SKALLI, Wafa (Elsevier, 2016)In-vivo estimates of the positions of knee ligament attachment sites are crucial for subject-specific knee modelling. The present study provides template digital models of femur, tibia and fibula that embed the positions ...
BERGAMINI, Elena; PILLET, Hélène; ROCHCONGAR, Goulven; THOREUX, Patricia; SKALLI, Wafa; CAPPOZZO, Aurelio; ROUCH, Philippe (Taylor & Francis, 2015)Detailed knowledge about subject-specific knee ligament length variation during knee flexion is crucial for musculoskel- etal modeling in human movement analysis and in clinical con- texts (Ascani et al. 2014). In this ...