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Prof David Howard's Outputs (106)

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.

Movement variability in stroke patients and controls performing two upper limb functional tasks: a new assessment methodology (2009)
Journal Article

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.

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.

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

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.

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.