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Effects of gleno-humeral joint center mislocation on shoulder kinematics and kinetics (2019)
Journal Article
Lempereur, M., Brochard, S., Leboucher, J., Leboeuf, F., Rémy-néris, O., & Borotikar, B. (2019). Effects of gleno-humeral joint center mislocation on shoulder kinematics and kinetics. Computer Methods in Biomechanics and Biomedical Engineering, 22(7), 764-771. https://doi.org/10.1080/10255842.2019.1590822

The gleno-humeral (GH) rotation centre is typically estimated using predictive or functional methods, however these methods may lead to location errors. This study aimed at determining a location error threshold above which statistically significant... Read More about Effects of gleno-humeral joint center mislocation on shoulder kinematics and kinetics.

“Dynamic knee valgus” – Are we measuring what we think we’re measuring? An evaluation of static and functional knee calibration methods for application in gait and clinical screening tests of the overhead squat and hurdle step (2019)
Journal Article
Philp, F., Leboeuf, F., Pandyan, A., & Stewart, C. (2019). “Dynamic knee valgus” – Are we measuring what we think we’re measuring? An evaluation of static and functional knee calibration methods for application in gait and clinical screening tests of the overhead squat and hurdle step. Gait & Posture, 70(May 19), 298-304. https://doi.org/10.1016/J.GAITPOST.2019.03.006

Background: "Dynamic knee valgus” has been identified as a risk factor for significant knee injuries, however, the limits and sources of error associated with existing 3D motion analysis methods have not been well established. Research question:... Read More about “Dynamic knee valgus” – Are we measuring what we think we’re measuring? An evaluation of static and functional knee calibration methods for application in gait and clinical screening tests of the overhead squat and hurdle step.

The effect on conventional gait model kinematics and kinetics of hip joint centre equations in adult healthy gait (2019)
Journal Article
Leboeuf, F., Reay, J., Jones, R., & Sangeux, M. (2019). The effect on conventional gait model kinematics and kinetics of hip joint centre equations in adult healthy gait. Journal of Biomechanics, 87(Apr 19), 167-171. https://doi.org/10.1016/j.jbiomech.2019.02.010

The Conventional Gait Model (CGM) needs to benefit from large investigations on localization of the hip joint centre (HJC). Incorrect positions from the native equations were demonstrated (Sangeux et al., 2014; Harrington et al., 2007). More accurate... Read More about The effect on conventional gait model kinematics and kinetics of hip joint centre equations in adult healthy gait.

The conventional gait model, an open-source implementation that reproduces the past but prepares for the future (2019)
Journal Article
Leboeuf, F., Baker, R., Barré, A., Reay, J., Jones, R., & Sangeux, M. (2019). The conventional gait model, an open-source implementation that reproduces the past but prepares for the future. Gait & Posture, 69(Mar 19), 126-129. https://doi.org/10.1016/j.gaitpost.2019.01.034

Background: The Conventional Gait Model (CGM), known by a variety of different names, is widely used in clinical gait analysis. We present pyCGM2, an open-source implementation of the CGM with two versions. The first, CGM1.0, is a clone of Vicon Plug... Read More about The conventional gait model, an open-source implementation that reproduces the past but prepares for the future.

O 111 - accuracy of the conventional gait model : preliminary results (2018)
Journal Article
Leboeuf, F., Barre, A., & Sangeux, M. (2018). O 111 - accuracy of the conventional gait model : preliminary results. Gait & Posture, 65, 233-234. https://doi.org/10.1016/j.gaitpost.2018.06.146

The Conventional Gait Model (CGM), distributed as Vicon Plugin gait (Vicon PiG) became a standard in the field of 3D Clinical Gait Analysis. Its reliability is assessed thought repeatability tests. On the other hand, accuracy of the CGM in terms of u... Read More about O 111 - accuracy of the conventional gait model : preliminary results.

CGM2 : proposal of an evolved conventional gait model (2018)
Journal Article
Leboeuf, F., Sangeux, M., Reay, J., Greuel, H., Jones, R., & Baker, R. (2018). CGM2 : proposal of an evolved conventional gait model. Gait & Posture, 65, 436-437. https://doi.org/10.1016/j.gaitpost.2018.07.043

Developed during the 1990s, the Conventional Gait Model (CGM), distributed as Vicon Plugin gait (Vicon PiG), has formed the basis of gait analysis in many clinical gait analysis services. However, it is also associated with several shortcomings and p... Read More about CGM2 : proposal of an evolved conventional gait model.

Estimation of muscle activation during different walking speeds with two mathematical approaches compared to surface EMG (2018)
Journal Article
Trinler, U., Leboeuf, F., Hollands, K., Jones, R., & Baker, R. (2018). Estimation of muscle activation during different walking speeds with two mathematical approaches compared to surface EMG. Gait & Posture, 64, 266-273. https://doi.org/10.1016/j.gaitpost.2018.06.115

Background Muscle force estimation could improve clinical gait analysis by enhancing insight into causes of impairments and informing targeted treatments. However, it is not currently standard practice to use muscle force models to augment clinic... Read More about Estimation of muscle activation during different walking speeds with two mathematical approaches compared to surface EMG.

The conventional gait model - success and limitations (2018)
Book Chapter
Baker, R., Leboeuf, F., Reay, J., & Sangeux, M. (2018). The conventional gait model - success and limitations. In B. Müller, & S. Wolf (Eds.), Handbook of Human Motion (489-508). Springer. https://doi.org/10.1007/978-3-319-14418-4_25

The Conventional Gait Model (CGM) is a generic name for a family of closely related and very widely used biomechanical models for gait analysis. After describing its history, the core attributes of the model are described followed by evaluation of it... Read More about The conventional gait model - success and limitations.

The choice of hip regression equations has small effect on kinematic and kinetic outputs of the conventional gait model (2017)
Journal Article
Leboeuf, F., Sangeux, M., & Baker, R. (2017). The choice of hip regression equations has small effect on kinematic and kinetic outputs of the conventional gait model. Gait & Posture, 57(Sup_1), 161. https://doi.org/10.1016/j.gaitpost.2017.06.345

The hip joint centre (HJC) regression equations used by the Conventional Gait Model (CGM) has been shown to provide inadequate results. The location of the HJC has benefited from a large research effort in recent years, and new regression equations... Read More about The choice of hip regression equations has small effect on kinematic and kinetic outputs of the conventional gait model.

An open source implementation of the Conventional Gait Model in Python (2017)
Journal Article
Leboeuf, F., Sangeux, M., & Baker, R. (2017). An open source implementation of the Conventional Gait Model in Python. Gait & Posture, 57(Sup_1), 236. https://doi.org/10.1016/j.gaitpost.2017.06.391

The Conventional Gait Model CGM has been a standard in clinical gait analysis since the 1990s. Well-known by its commercialisation as Plug-in Gait (PiG, Vicon, Oxford, UK), it is simple and widely understood facilitating discussion between biomech... Read More about An open source implementation of the Conventional Gait Model in Python.

Neurotomy of the rectus femoris nerve : short-term effectiveness for spastic stiff knee gait (2016)
Journal Article
Gross, R., Robertson, J., Leboeuf, F., Hamel, O., Brochard, S., & Perrouin-Verbe, B. (2016). Neurotomy of the rectus femoris nerve : short-term effectiveness for spastic stiff knee gait. Gait & Posture, 52, 251-257. https://doi.org/10.1016/j.gaitpost.2016.11.032

Background Stiff knee gait is a troublesome gait disturbance related to spastic paresis, frequently associated with overactivity of the rectus femoris muscle in the swing phase of gait. Objective The aim of this study was to assess the sh... Read More about Neurotomy of the rectus femoris nerve : short-term effectiveness for spastic stiff knee gait.

Pathological and physiological muscle co-activation during active elbow extension in children with unilateral cerebral palsy (2016)
Journal Article
Sarcher, A., Raison, M., Leboeuf, F., Perrouin-Verbe, B., Brochard, S., & Gross, R. (2016). Pathological and physiological muscle co-activation during active elbow extension in children with unilateral cerebral palsy. Clinical Neurophysiology, 128(1), 4-13. https://doi.org/10.1016/j.clinph.2016.10.086

Objective To address the roles and mechanisms of co-activation in two flexor/extensor pairs during elbow extension in children with cerebral palsy (CP). Methods 13 Typically Developing (TD) and 13 children with unilateral spastic CP per... Read More about Pathological and physiological muscle co-activation during active elbow extension in children with unilateral cerebral palsy.

Muscle activation during gait in children with Duchenne muscular dystrophy (2016)
Journal Article
Ropars, J., Lempereur, M., Vuillerot, C., Tiffreau, V., Peudenier, S., Cuisset, J., …Brochard, S. (2016). Muscle activation during gait in children with Duchenne muscular dystrophy. PLoS ONE, 11(9), e0161938. https://doi.org/10.1371/journal.pone.0161938

The aim of this prospective study was to investigate changes in muscle activity during gait in children with Duchenne muscular Dystrophy (DMD). Dynamic surface electromyography recordings (EMGs) of 16 children with DMD and pathological gait were comp... Read More about Muscle activation during gait in children with Duchenne muscular dystrophy.

Comparison of total ankle replacement and ankle arthrodesis in patients with haemophilia using gait analysis : two case reports (2015)
Journal Article
Dauty, M., Gross, R., Leboeuf, F., & Trossaert, M. (2015). Comparison of total ankle replacement and ankle arthrodesis in patients with haemophilia using gait analysis : two case reports. BMC Research Notes, 8, 768. https://doi.org/10.1186/s13104-015-1763-y

BACKGROUND: Severe hemophilia is an inherited, lifelong bleeding disorder characterized by spontaneous bleeding, which results in painful joint deformities. Currently two surgical treatments are available to treat haemophilia-related ankle joint dest... Read More about Comparison of total ankle replacement and ankle arthrodesis in patients with haemophilia using gait analysis : two case reports.

Does muscle coactivation influence joint excursions during gait in children with and without hemiplegic cerebral palsy? Relationship between muscle coactivation and joint kinematics (2015)
Journal Article
Gross, R., Leboeuf, F., Hardouin, J., Perrouin-Verbe, B., Brochard, S., & Rémy-Néris, O. (2015). Does muscle coactivation influence joint excursions during gait in children with and without hemiplegic cerebral palsy? Relationship between muscle coactivation and joint kinematics. Clinical Biomechanics, 30(10), 1088-1093. https://doi.org/10.1016/j.clinbiomech.2015.09.001

Background The theoretical role of muscle coactivation is to stiffen joints. The aim of this study was to assess the relationship between muscle coactivation and joint excursions during gait in children with and without hemiplegic cerebral palsy.... Read More about Does muscle coactivation influence joint excursions during gait in children with and without hemiplegic cerebral palsy? Relationship between muscle coactivation and joint kinematics.

Impact of elbow angular velocity on muscle activation and coactivation during active elbow extension and supination in children with spastic hemiplegic cerebral palsy (2015)
Journal Article
Sarcher, A., Ballaz, L., Leboeuf, F., Gross, R., Perrouin-Verbe, B., & Raison, M. (2015). Impact of elbow angular velocity on muscle activation and coactivation during active elbow extension and supination in children with spastic hemiplegic cerebral palsy. Gait & Posture, 42(S1), S18-S19. https://doi.org/10.1016/j.gaitpost.2015.06.039

Does the increase of angular velocity cause an increase of agonist and antagonist muscles activation and of coactivation during active elbow extension and supination in the involved upper limb of children with spastic hemiplegic cerebral palsy?

Impact of muscle activation on ranges of motion during active elbow movement in children with spastic hemiplegic cerebral palsy (2014)
Journal Article
Sarcher, A., Raison, M., Ballaz, L., Lemay, M., Leboeuf, F., Trudel, K., & Mathieu, P. (2014). Impact of muscle activation on ranges of motion during active elbow movement in children with spastic hemiplegic cerebral palsy. Clinical Biomechanics, 30(1), 86-94. https://doi.org/10.1016/j.clinbiomech.2014.10.009

Background Children with spastic hemiplegic cerebral palsy are restricted in their daily activities due to limited active ranges of motion of their involved upper limb, specifically at the elbow. Their impaired muscles are frequently targeted by a... Read More about Impact of muscle activation on ranges of motion during active elbow movement in children with spastic hemiplegic cerebral palsy.