Laurent A Frossard | Griffith University (original) (raw)

Laurent A Frossard

I am a bionic limbs scientist passionate about developing ground-breaking prosthetic solutions to improve life of individuals suffering from limb loss.

Internationally recognized as a researcher and independent expert, I contribute to this promising field of bionics as an author, speaker and entrepreneur.

My expertise in bionic limbs is unique because I can consider treatments from an all-rounded perspective integrating prosthetic biomechanics, clinical benefits, health service delivery and health economics.

I look at efficiency and safety of interventions with bionic limbs using wholesome research skills that combine building resources, sharing knowledge and creating impact worldwide.

To know more: www.LaurentFrossard.com
Address: Brisbane, QLD, Australia

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Papers by Laurent A Frossard

Faculty of Health Institute of Health and Biomedical Innovation Science Engineering Faculty School of Exercise Nutrition Sciences, Mar 13, 2015

Medical & Biological Engineering & Computing, 1996

Many studies concerning the internal work of human motion have used two-dimensional kinematic mod... more Many studies concerning the internal work of human motion have used two-dimensional kinematic models to estimate kinetic energy of the segments. The generalised co-ordinate concept has been applied here to a simultaneous and bilateral gait analysis. A three-dimensional kinematic model based on quaternions has been developed. To estimate the kinetic energy of a multi-body system, only two constants and two variables are needed: the segment body mass, the inertia tensor, the position and the orientation of the local co-ordinate system with respect to the inertial co-ordinate system. The variation of the kinetic energy is used in the calculation of the internal work for an able-bodied subject during the gait cycle. Both the internal work and the instantaneous energy correlation coefficient enable the determination of a conservative phase delimited by the beginning of the single support phase until the flat-foot phase, and a non-conservative phase corresponding to the period from heel-off to contralateral heel-strike including the double support phase.

Archives of Physiology and Biochemistry, 1995

The direct anchorage of a lower-limb prosthesis to the bone has been shown to be an excellent alt... more The direct anchorage of a lower-limb prosthesis to the bone has been shown to be an excellent alternative for amputees experiencing complications in using a conventional prosthetic socket. After surgical implantation, amputees have to go through a weight bearing exercise program to prepare the bone to tolerate forces and promote bone-remodeling. Currently, the load magnitude prescribed by the clinician is measured by a weight scale which reports only the axial force in the limb. Previous study using a load transducer revealed that in addition to the axial force there were other forces and moments. This study develops a FE model and utilizes our load data to investigate the stress distribution at the bone-implant interface. The model shows that the stress distribution could be highly non-uniform during the exercise. Bone-implant interface stress has certain implications in pain adaptation and bone-remodeling, and a good understanding of it can assist in future attempts to refine and shorten the period of rehabilitation exercise.