Towards the development of a dynamic device for the evaluation of hypertonia of the upper extremity

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dc.contributor.advisorJohn, Lester Ren_ZA
dc.contributor.authorProxenos, Matthewen_ZA
dc.date.accessioned2015-07-02T08:37:13Z
dc.date.available2015-07-02T08:37:13Z
dc.date.issued2014en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractTraditional evaluation techniques for spastic hypertonia, such as the Modified Ashworth Scale (MAS), are prone to subjectivity and have been shown to have poor inter- and intra-rater reliability. Automated objective electromechanical devices for upper-limb evaluation do exist, such as the commercially available NeuroFlexor device. These assess combined wrist and finger flexor tone by monitoring wrist joint torque during passive wrist extension. Wrist flexor tone evaluations made by manipulation of the wrist joint alone, however, could be affected by possible hypertonia of the finger flexors due to the moment arm that these muscles‟ tendons have at the wrist joint. As such, robotic wrist flexor evaluation devices that measure only the wrist joint torque cannot distinguish between wrist and finger flexor hypertonia. A robotic device measuring involuntary resistance at the wrist and finger joints separately during wrist manipulation can be used to provide wrist flexor tone assessments that compensate for the influence of hypertonia of the finger flexor muscles, and therefore provide more accurate tone assessments of the wrist flexor muscles. To design, construct and evaluate a patient-safe device for the independent measurement of wrist and finger joint torque during wrist extension, and to use the device to accurately evaluate wrist flexor tone, in isolation from possible effects of finger flexor tone. Evaluations were made using the device in a clinical setting with volunteers (n=6) with varying levels of hypertonia in the hands and wrists. Volunteers’ wrist flexor tone was also assessed by three clinicians using the MAS score.en_ZA
dc.identifier.apacitationProxenos, M. (2014). <i>Towards the development of a dynamic device for the evaluation of hypertonia of the upper extremity</i>. (Thesis). University of Cape Town ,Faculty of Health Sciences ,Division of Biomedical Engineering. Retrieved from http://hdl.handle.net/11427/13284en_ZA
dc.identifier.chicagocitationProxenos, Matthew. <i>"Towards the development of a dynamic device for the evaluation of hypertonia of the upper extremity."</i> Thesis., University of Cape Town ,Faculty of Health Sciences ,Division of Biomedical Engineering, 2014. http://hdl.handle.net/11427/13284en_ZA
dc.identifier.citationProxenos, M. 2014. Towards the development of a dynamic device for the evaluation of hypertonia of the upper extremity. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Proxenos, Matthew AB - Traditional evaluation techniques for spastic hypertonia, such as the Modified Ashworth Scale (MAS), are prone to subjectivity and have been shown to have poor inter- and intra-rater reliability. Automated objective electromechanical devices for upper-limb evaluation do exist, such as the commercially available NeuroFlexor device. These assess combined wrist and finger flexor tone by monitoring wrist joint torque during passive wrist extension. Wrist flexor tone evaluations made by manipulation of the wrist joint alone, however, could be affected by possible hypertonia of the finger flexors due to the moment arm that these muscles&#8223; tendons have at the wrist joint. As such, robotic wrist flexor evaluation devices that measure only the wrist joint torque cannot distinguish between wrist and finger flexor hypertonia. A robotic device measuring involuntary resistance at the wrist and finger joints separately during wrist manipulation can be used to provide wrist flexor tone assessments that compensate for the influence of hypertonia of the finger flexor muscles, and therefore provide more accurate tone assessments of the wrist flexor muscles. To design, construct and evaluate a patient-safe device for the independent measurement of wrist and finger joint torque during wrist extension, and to use the device to accurately evaluate wrist flexor tone, in isolation from possible effects of finger flexor tone. Evaluations were made using the device in a clinical setting with volunteers (n=6) with varying levels of hypertonia in the hands and wrists. Volunteers’ wrist flexor tone was also assessed by three clinicians using the MAS score. DA - 2014 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - Towards the development of a dynamic device for the evaluation of hypertonia of the upper extremity TI - Towards the development of a dynamic device for the evaluation of hypertonia of the upper extremity UR - http://hdl.handle.net/11427/13284 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/13284
dc.identifier.vancouvercitationProxenos M. Towards the development of a dynamic device for the evaluation of hypertonia of the upper extremity. [Thesis]. University of Cape Town ,Faculty of Health Sciences ,Division of Biomedical Engineering, 2014 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/13284en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDivision of Biomedical Engineeringen_ZA
dc.publisher.facultyFaculty of Health Sciencesen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherBiomedical Engineeringen_ZA
dc.titleTowards the development of a dynamic device for the evaluation of hypertonia of the upper extremityen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Med)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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