On the use of knee functional calibration to determine the medio-lateral axis of the femur in gait analysis: Comparison with EOS biplanar radiographs as reference
TypeArticles dans des revues avec comité de lecture
Accurate calibration of the medio-lateral axis of the femur is crucial for clinical decision making based on gait analysis. This study proposes a protocol utilizing biplanar radiographs to provide a reference medio-lateral axis based on the anatomy of the femur. The biplanar radiographs allowed 3D modelling of the bones of the lower limbs and the markers used for motion capture, in the standing posture. A comprehensive analysis was performed and results from biplanar radiographs were reliable for 3D marker localization (±0.35 mm) and for 3D localization of the anatomical landmarks (±1 mm), leading to a precision of 1° for the orientation of the condylar axis of the femur and a 95% confidence interval of ±3° after registration with motion capture data. The anatomical condylar axis was compared to a conventional, marker-based, axis and three functional calibration techniques (axis transformation, geometric axis fit and DynaKAD). Results for the conventional method show an average difference with the condylar axis of 15° (SD: 6°). Results indicate DynaKAD functional axis was the closest to the anatomical condylar axis, mean: 1° (SD: 5°) when applied to passive knee flexion movement. However, the range of the results exceeded 15° for all methods. Hence, the use of biplanar radiographs, or an alternative imaging technique, may be required to locate the medio-lateral axis of the femur reliably prior to clinical decision making for femur derotational osteotomies.
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
Validation of hip joint center localization methods during gait analysis using 3D EOS imaging in typically developing and cerebral palsy children ASSI, Ayman; SAURET, Christophe; MASSAAD, Abir; BAKOUNY, Ziad; PILLET, Hélène; SKALLI, Wafa; GHANEM, Ismat (Elsevier BV, 2016)Localization of the hip joint center (HJC) is essential in computation of gait data. EOS low dose biplanar X-rays have been shown to be a good reference in evaluating various methods of HJC localization in adults. The aim ...
A reference method for the evaluation of femoral head joint center location technique based on external markers PILLET, Hélène; SANGEUX, Morgan; HAUSSELLE, Jérôme; EL RACHKIDI, Rami; SKALLI, Wafa (Elsevier, 2014)Accurate localization of joint centers is essential in movement analysis. However, joint centers cannot be directly palpated and alternative methods must be used. To assess the relative merits of these methods, a medical ...
A 3D reconstruction method of the body envelope from biplanar X-rays: Evaluation of its accuracy and reliability NÉROT, Agathe; CHOISNE, Julie; AMABILE, Célia; TRAVERT, Christophe; PILLET, Hélène; WANG, Xuguang; SKALLI, Wafa (Elsevier, 2015)The aim of this study was to propose a novel method for reconstructing the external body envelope from the low dose biplanar X-rays of a person. The 3D body envelope was obtained by deforming a template to match the surface ...
Subject Specific Finite Element Mesh Generation of the Pelvis from Biplanar X-ray Images: Application to 120 clinical cases FOUGERON, Nolwenn; ROHAN, Pierre-Yves; MACRON, Aurélien; TRAVERT, Christophe; PILLET, Hélène; SKALLI, Wafa (2018)Several Finite Element (FE) models of the pelvis have been developed to comprehensively assess the onset of pathologies and for clinical and industrial applications. However, because of the difficulties associated with the ...
SAURET, Christophe; BASCOU, Joseph; DE SAINT REMY, Nicolas; PILLET, Hélène; VASLIN, Philippe; LAVASTE, François (Elsevier, 2012)This article proposes a simple and convenient method for assessing the subject-specific rolling resistance acting on a manual wheelchair, which could be used during the provision of clinical service. This method, based on ...