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Direct comparison of calculated hip joint contact forces with those measured using instrumented implants. An evaluation of a three-dimensional mathematical model of the lower limb.
- B. Stansfield, A. Nicol, J. P. Paul, I. Kelly, F. Graichen, G. Bergmann
- Engineering, Medicine
- Journal of biomechanics
- 1 July 2003
The results of in vivo force measurements from instrumented prostheses are used to validate the results calculated using the mathematical models, and there was general agreement between the calculated and measured forces in both pattern and magnitude. Expand
Finite element model creation and stability considerations of complex biological articulation: The human wrist joint.
This paper looks at the methodology of creating a finite element model of such a joint focussing on the wrist and the effects additional constraining has on the solution of the model and shows that by investigating the effects each of the constraints, a better understanding can be achieved. Expand
Regression analysis of gait parameters with speed in normal children walking at self-selected speeds.
Caution is advised in using the data to attempt to predict an individual's gait parameters due to the wide spread of data about the regression lines and it is not recommend that the data be used to extrapolate the regression data to wider speed ranges. Expand
Intra-rater repeatability of the Oxford foot model in healthy children in different stages of the foot roll over process during gait.
Relative and absolute repeatability were best in the sagittal plane (flexion/extension) with the poorest repeatability in the transverse plane (rotation and abduction/adduction) and this was consistent throughout the gait cycle. Expand
Sagittal Joint Kinematics, Moments, and Powers Are Predominantly Characterized by Speed of Progression, Not Age, in Normal Children
The clinical relevance of these findings is that normalized speed of walking, rather than age, should be considered when comparing normal with pathologic gait. Expand
A three-dimensional finite element model of maximal grip loading in the human wrist
- M. Gíslason, D. Nash, +5 authors B. Stansfield
- Mathematics, Medicine
- Proceedings of the Institution of Mechanical…
- 1 October 2009
The aim of this work was to create an anatomically accurate three-dimensional finite element model of the wrist, applying subject-specific loading and quantifying the internal load transfer through the joint during maximal grip, and it was found that for the maximal grip the thumb carried the highest load. Expand
Normalisation of gait data in children.
ND analysis of the children's gait indicated that there was little change in the combination of step length and cadence used to achieve a particular velocity between 5 and 12 and the first peak and mid-stance trough values of the vertical component of ground reaction force did not change with age. Expand
Hip joint contact forces in normal subjects and subjects with total hip prostheses: walking and stair and ramp negotiation.
The characterisation of hip joint contact forces provides essential information for prosthetic joint design and testing and provides evidence of, not only actual use of joints, but also of possible levels of force that might be applied to hip prostheses if subjects returned to normal use. Expand
Validity and reliability of the activPAL3 for measuring posture and stepping in adults and young people.
The detection of posture and purposeful stepping with the activPAL3 was excellent indicating that it is a suitable monitor for characterising free-living posture and Purposeful stepping activity in healthy adults and young people. Expand
True cadence and step accumulation are not equivalent: the effect of intermittent claudication on free-living cadence.
- B. Stansfield, C. Clarke, P. Dall, J. Godwin, R. Holdsworth, M. Granat
- Mathematics, Medicine
- Gait & posture
- 1 February 2015
The measurement of true cadence in the population of people with IC provides information about their stepping rate during the time they are stepping and was not equivalent in those with IC or controls. Expand