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Error in the description of foot kinematics due to violation of rigid body assumptions (2010)
Journal Article
Nester, C., Liu, A., Ward, E., Howard, D., Cocheba, J., & Derrick, T. (2010). Error in the description of foot kinematics due to violation of rigid body assumptions. Journal of Biomechanics, 43(4), 666-672. https://doi.org/10.1016/j.jbiomech.2009.10.027

Kinematic data from rigid segment foot models inevitably includes errors because the bones within each segment move relative to each other. This study sought to define error in foot kinematic data due to violation of the rigid segment assumption. The... Read More about Error in the description of foot kinematics due to violation of rigid body assumptions.

A generic analytical foot rollover model for predicting translational ankle kinematics in gait simulation studies (2010)
Journal Article
Ren, L., Howard, D., Ren, L., Nester, C., & Tian, L. (2010). A generic analytical foot rollover model for predicting translational ankle kinematics in gait simulation studies. Journal of Biomechanics, 43(2), 194-202. https://doi.org/10.1016/j.jbiomech.2009.09.027

The objective of this paper is to develop an analytical framework to representing the ankle-foot kinematics by modelling the foot as a rollover rocker, which cannot only be used as a generic tool for general gait simulation but also allows for case-s... Read More about A generic analytical foot rollover model for predicting translational ankle kinematics in gait simulation studies.

Inertial sensor-based knee flexion/extension angle estimation (2009)
Journal Article
Cooper, G., Sheret, I., McMillian, L., Siliverdis, K., Sha, N., Hodgins, D., …Howard, D. (2009). Inertial sensor-based knee flexion/extension angle estimation. Journal of Biomechanics, 42(16), 2678-2685. https://doi.org/10.1016/j.jbiomech.2009.08.004

A new method for estimating knee joint flexion/extension angles from segment acceleration and angular velocity data is described. The approach uses a combination of Kalman filters and biomechanical constraints based on anatomical knowledge. In contra... Read More about Inertial sensor-based knee flexion/extension angle estimation.

Activity identification using body-mounted sensors — a review of classification techniques (2009)
Journal Article
Preece, S., Goulermas, J., Kenney, L., Howard, D., Meijer, K., & Crompton, R. (2009). Activity identification using body-mounted sensors — a review of classification techniques. Physiological Measurement, 30, R1-R33. https://doi.org/10.1088/0967-3334/30/4/R01

With the advent of miniaturized sensing technology, which can be body-worn, it is nowpossible to collect and store data on different aspects of human movement under the conditions of free living. This technology has the potential to be used in automa... Read More about Activity identification using body-mounted sensors — a review of classification techniques.

An in vivo experimental validation of a computational model of human foot (2009)
Journal Article
Tao, K., Wang, D., Wang, C., Wang, X., Liu, A., Nester, C., & Howard, D. (2009). An in vivo experimental validation of a computational model of human foot. Journal of Bionic Engineering, 6(4), 387-397. https://doi.org/10.1016/S1672-6529%2808%2960138-9

Reliable computational foot models offer an alternative means to enhance knowledge on the biomechanics of human foot. Model validation is one of the most critical aspects of the entire foot modeling and analysis process. This paper presents an in viv... Read More about An in vivo experimental validation of a computational model of human foot.

Simulating acceleration from stereophotogrammetry for medical device design (2009)
Journal Article
Tresadern, P., Thies, S., Kenney, L., Howard, D., Smith, C., Rigby, J., & Goulermas, J. (2009). Simulating acceleration from stereophotogrammetry for medical device design. Journal of Biomechanical Engineering, 131(6), https://doi.org/10.1115/1.3118771

When designing a medical device based on lightweight accelerometers, the designer is faced with a number of questions in order to maximize performance while minimizing cost and complexity: Where should the inertial unit be located? How many units ar... Read More about Simulating acceleration from stereophotogrammetry for medical device design.

Movement variability in stroke patients and controls performing two upper limb functional tasks: a new assessment methodology (2009)
Journal Article
Thies, S., Tresadern, P., Kenney, L., Smith, J., Howard, D., Goulermas, J., …Rigby, J. (2009). Movement variability in stroke patients and controls performing two upper limb functional tasks: a new assessment methodology. Journal of NeuroEngineering and Rehabilitation, 6(2), https://doi.org/10.1186/1743-0003-6-2

Background: In the evaluation of upper limb impairment post stroke there remains a gap between detailed kinematic analyses with expensive motion capturing systems and common clinical assessment tests. In particular, although many clinical tests evalu... Read More about Movement variability in stroke patients and controls performing two upper limb functional tasks: a new assessment methodology.

Investigating effects of mechanical properties of trans-tibial prostheses on user performance (2008)
Journal Article
Major, M., Twiste, M., Kenney, L., & Howard, D. (2008). Investigating effects of mechanical properties of trans-tibial prostheses on user performance. Journal of Biomechanics, 41(S1), 416-416. https://doi.org/10.1016/S0021-9290%2808%2970415-9

As the design of trans-tibial prostheses has continued to advance, this has led to a wide range of alternative commercially available modular components, which when assembled comprise the trans-tibial prosthesis.

The effect of the impedance of a thin hydrogel electrode on sensation during functional electrical stimulation (2008)
Journal Article
Sha, N., Kenney, L., Heller, B., Barker, A., Howard, D., & Wang, W. (2008). The effect of the impedance of a thin hydrogel electrode on sensation during functional electrical stimulation. https://doi.org/10.1016/j.medengphy.2007.07.012

Surface functional electrical stimulation results in stimulation of cutaneous receptors and discomfort. The degree of non-uniformity of current distribution in the cutaneous layers in the vicinity of the electrode may influence the sensation experien... Read More about The effect of the impedance of a thin hydrogel electrode on sensation during functional electrical stimulation.

An instance-based algorithm with auxiliary similarity information for the estimation of gait kinematics from wearable sensors. (2008)
Journal Article
Goulermas, J., Findlow, A., Nester, C., Liatsis, P., Zeng, X., Kenney, L., …Howard, D. (2008). An instance-based algorithm with auxiliary similarity information for the estimation of gait kinematics from wearable sensors. IEEE transactions on neural networks / a publication of the IEEE Neural Networks Council, 19(9), 1574-1582. https://doi.org/10.1109/TNN.2008.2000808

Wearable human movement measurement systems are increasingly popular as a means of capturing human movement data in real-world situations. Previous work has attempted to estimate segment kinematics during walking fromfoot acceleration and angular ve... Read More about An instance-based algorithm with auxiliary similarity information for the estimation of gait kinematics from wearable sensors..

Rapid prototyping for functional electrical stimulation control (2008)
Journal Article
Tresadern, P., Thies, S., Kenney, L., Howard, D., & Goulermas, J. (2008). Rapid prototyping for functional electrical stimulation control. IEEE Pervasive Computing, 7(2), 62-69. https://doi.org/10.1109/MPRV.2008.35

Electrical muscle stimulators can help restore limb function following a neurological injury. However, complex neuromuscular stimulators need a straightforward software interface to simplify hardware programming and make patient care more efficient.... Read More about Rapid prototyping for functional electrical stimulation control.

A finite element model to identify electrode influence on current distribution in the skin (2008)
Journal Article
Sha, N., Kenney, L., Heller, B., Barker, A., Howard, D., & Moatamedi, M. (2008). A finite element model to identify electrode influence on current distribution in the skin. Artificial Organs, 32(8), 639-643. https://doi.org/10.1111/j.1525-1594.2008.00615.x

Discomfort experienced during surface functional electrical stimulation (FES) is thought to be partly a result of localised high current density in the skin underneath the stimulating electrode. This paper describes a finite element (FE) model to pre... Read More about A finite element model to identify electrode influence on current distribution in the skin.

The influence of gluteus maximus on transverse plane tibial rotation (2008)
Journal Article
Preece, S., Graham-Smith, P., Nester, C., Howard, D., Hermens, H., Herrington, L., & Bowker, P. (2008). The influence of gluteus maximus on transverse plane tibial rotation. Gait & Posture, 27, 616-621. https://doi.org/10.1016/j.gaitpost.2007.08.007

There is a common clinical belief that transverse plane tibial rotation is controlled by the rearfoot. Although distal structures may influence the motion of the tibia, transverse plane tibial rotation could be determined by the proximal hip musculat... Read More about The influence of gluteus maximus on transverse plane tibial rotation.

In vitro study of foot kinematics using a dynamic walking cadaver model (2007)
Journal Article
Nester, C., Liu, A., Ward, E., Howard, D., Cocheba, J., Derrick, T., & Patterson, P. (2007). In vitro study of foot kinematics using a dynamic walking cadaver model. Journal of Biomechanics, 40(9), 1927-1937. https://doi.org/10.1016/j.jbiomech.2006.09.008

There is a dearth of information on navicular, cuboid, cuneiform and metatarsal kinematics during walking and our objective was to study the kinematic contributions these bones might make to foot function. A dynamic cadaver model of walking was used... Read More about In vitro study of foot kinematics using a dynamic walking cadaver model.

Foot kinematics during walking measured using bone and surface mounted markers (2007)
Journal Article
Arndt, A., Nester, C., Howard, D., Liu, A., Wolf, P., Lundberg, A., …Lundgren, P. (2007). Foot kinematics during walking measured using bone and surface mounted markers. Journal of Biomechanics, 40(15), 3412-3423. https://doi.org/10.1016/j.jbiomech.2007.05.019

The aim was to compare kinematic data from an experimental foot model comprising four segments ((i) heel, (ii) navicular/cuboid (iii) medial forefoot, (iv) lateral forefoot), to the kinematics of the individual bones comprising each segment. The foot... Read More about Foot kinematics during walking measured using bone and surface mounted markers.

Predictive modelling of human walking over a complete gait cycle (2007)
Journal Article
Ren, L., Jones, R., & Howard, D. (2007). Predictive modelling of human walking over a complete gait cycle. Journal of Biomechanics, 40(7), 1567-1574. https://doi.org/10.1016/j.jbiomech.2006.07.017

An inverse dynamics multi-segment model of the body was combined with optimisation techniques to simulate normal walking in the sagittal plane on level ground. Walking is formulated as an optimal motor task subject to multiple constraints with minimi... Read More about Predictive modelling of human walking over a complete gait cycle.

Intrinsic foot kinematics measured in vivo during the stance phase of slow running (2007)
Journal Article
Arndt, A., Stacoff, A., Wolf, P., Nester, C., Liu, A., Jones, R., …Lundberg, A. (2007). Intrinsic foot kinematics measured in vivo during the stance phase of slow running. Journal of Biomechanics, 40(12), 2672-2678. https://doi.org/10.1016/j.jbiomech.2006.12.009

An accurate kinematic description of the intrinsic articulations of the foot during running has not previously been presented, primarily due to methodological limitations. An invasive method based upon reflective marker arrays mounted on intracortica... Read More about Intrinsic foot kinematics measured in vivo during the stance phase of slow running.

Intrinsic foot motion measured in vivo during barefoot running (2006)
Journal Article
Arndt, A., Wolf, P., Nester, C., Liu, A., Jones, R., Howard, D., …Lundberg, A. (2006). Intrinsic foot motion measured in vivo during barefoot running. Journal of Biomechanics, 39(Supp.1), S182. https://doi.org/10.1016/S0021-9290%2806%2983644-4

Knowledge of the natural range of motion of individual skeletal segments in the foot during running is necessary for the construction of appropriate stability parameters in athletic footwear. Globally restricting intrinsic motion of the foot may r... Read More about Intrinsic foot motion measured in vivo during barefoot running.

Invasive study of rearfoot, midfoot and forefoot kinematics during walking (2006)
Journal Article
Nester, C., Jones, R., Liu, A., Howard, D., Lundberg, A., Arndt, T., …Wolf, P. (2006). Invasive study of rearfoot, midfoot and forefoot kinematics during walking. Journal of Biomechanics, 39(Supp.1), S77. https://doi.org/10.1016/S0021-9290%2806%2983195-7

There is a dearth of quality information on the kinematics of the mid and forefoot during ambulation. We investigated the kinematics of the tibia, fibula, talus, calcaneus, cuboid, navicular, medial cuneiform, first and fifth metatarsals during wa... Read More about Invasive study of rearfoot, midfoot and forefoot kinematics during walking.