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3. The application of NCaRBS to the Trendelenburg test and total hip arthroplasty outcome

Author

Whatling, Gemma Marie, Holt, Catherine Avril, and Beynon, Malcolm James

Subjects
TJ, RD
Abstract

This paper compares the frontal plane hip func- tion of subject’s known to have had hip arthroplasty via either the lateral (LA) or posterior (PA) surgical approaches and a group of subjects associated with no pathology (NP). This is investigated through the Trendelenburg test using 3D motion analysis and classification. Here, a recent develop- ment on the Classification and Ranking Belief Simplex (CaRBS) technique, able to undertake n-state classification, so termed NCaRBS is employed. The relationship between post-operative hip function measured during a Trendelen- burg Test using three patient characteristics (pelvic obliquity, frontal plane hip moment and frontal plane hip power) of LA, PA and NP subjects are modelled together. Using these characteristics, the classification accuracy was 93.75% for NP, 57.14% for LA, 38.46% for PA. There was a clear distinction between NP and post-surgical function. 3/6 LA subjects and 6/8 PA subjects were misclassified as having NP function, implying that greater function is restored following the PA to surgery. NCaRBS achieved a higher accuracy (65.116%) than through a linear discriminant analysis (48.837%). A Neural Network with two-nodes achieved the same accuracy (65.116%) and as expected was further improved with three-nodes (69.767%). A valuable benefit to the employment of the NCaRBS technique is the graphical exposition of the contribution of patient characteristics to the classification analysis.

Published
2015

8. Kinematic analysis of the shoulder mechanism in able-bodied non-experienced manual wheelchair users

Author

Lafta, Hassanain Ali, Guppy, Robert, Whatling, Gemma Marie, Holt, Catherine Avril, Lafta, Hassanain Ali, Guppy, Robert, Whatling, Gemma Marie, and Holt, Catherine Avril

Abstract

About 10% of the global population, i.e. about 650 million people, have disabilities [1]. Studies indicate that, of these, some 10% require a wheelchair. Manual wheelchair propulsion is an important form of mobility for those people to become productive members of their communities. The shoulder is a complex mechanism that plays an important role in manual wheelchair propulsion. Better knowledge of upper limb biomechanics during manual wheelchair propulsion can improve understanding of the resulted injuries and lead to improvements in propulsion efficiency. The primary purpose of this study is to investigate the simultaneous shoulder complex kinematics during functional manual wheelchair mobility. A protocol for three-dimensional kinematic measurements of the shoulder complex is presented using six degrees of freedom analysis. Each upper limb is treated as a four segments linked system that consists of trunk, upper arm, forearm and hand. Each segment is considered as a single rigid body. Selected temporal and kinematic parameters over the wheelchair stroke cycle are characterised in all three planes of motion.

21. How does high tibial osteotomy affect lower limb biomechanics?

Author

Whatling, Gemma Marie, Watling, Daniel, Forrest, Sarah, Wilson, Chris, Metcalfe, Andrew, Ismael, S., Holt, Catherine Avril, Whatling, Gemma Marie, Watling, Daniel, Forrest, Sarah, Wilson, Chris, Metcalfe, Andrew, Ismael, S., and Holt, Catherine Avril

32. Changes in gait biomechanics following high tibial osteotomy

Author

Whatling, Gemma marie, Watling, Daniel, Forrest, Sarah, Wilson, Chris, Metcalfe, Andrew, Ismael, S., Holt, Catherine Avril, Whatling, Gemma marie, Watling, Daniel, Forrest, Sarah, Wilson, Chris, Metcalfe, Andrew, Ismael, S., and Holt, Catherine Avril

43. A novel approach to the classification of scapular kinematics

Author

Warner, Martin, Whatling, Gemma Marie, Worsley, Peter, Mottram, S., Chappell, P., Holt, Catherine Avril, Stokes, M., Warner, Martin, Whatling, Gemma Marie, Worsley, Peter, Mottram, S., Chappell, P., Holt, Catherine Avril, and Stokes, M.

48. High tibial osteotomy: linking biomechanical and biological changes

Author

Whatling, Gemma Marie, Holt, Catherine Avril, Brakspear, Karen, Roberts, Helen, Watling, Daniel, Kotwal, R., Wilson, Chris, Williams, Rhys, Metcalfe, Andrew, Sultan, J., Mason, Deborah, Whatling, Gemma Marie, Holt, Catherine Avril, Brakspear, Karen, Roberts, Helen, Watling, Daniel, Kotwal, R., Wilson, Chris, Williams, Rhys, Metcalfe, Andrew, Sultan, J., and Mason, Deborah

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