{"id":6237,"date":"2026-10-19T09:48:40","date_gmt":"2026-10-19T09:48:40","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-salfraedi-vigdis-vala-valgeirsdottir\/"},"modified":"2026-10-19T09:48:40","modified_gmt":"2026-10-19T09:48:40","slug":"doktorsvorn-i-salfraedi-vigdis-vala-valgeirsdottir","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-salfraedi-vigdis-vala-valgeirsdottir\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed s\u00e1lfr\u00e6\u00f0i – Vigd\u00eds Vala Valgeirsd\u00f3ttir"},"content":{"rendered":"
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Fimmtudaginn 2. desember ver Vigd\u00eds Vala Valgeirsd\u00f3ttir doktorsritger\u00f0 s\u00edna \u00ed s\u00e1lfr\u00e6\u00f0i vi\u00f0 S\u00e1lfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands. Ritger\u00f0in ber heiti\u00f0: Gerviganglimir \u00e1 h\u00e1t\u00e6kni\u00f6ld: \u00dearfir notenda og \u00e1vinningur. Lower-limb Prosthetics in the Age of Advanced Solutions: Understanding People\u2019s Needs and Future Benefits.<\/strong><\/p>\n

Andm\u00e6lendur eru dr. Andrew Sawers, d\u00f3sent vi\u00f0 University of Illinois at Chicago, og dr. Krist\u00edn Briem, pr\u00f3fessor vi\u00f0 L\u00e6knadeild H\u00e1sk\u00f3la \u00cdslands.<\/p>\n

Umsj\u00f3narkennari var dr. \u00c1rni Kristj\u00e1nsson, pr\u00f3fessor, og lei\u00f0beinandi var \u00c1sgeir Alexandersson, l\u00e6knir og MSc, hj\u00e1 \u00d6ssuri. Auk \u00feeirra sat dr. \u00d3mar I. J\u00f3hannesson, v\u00edsindama\u00f0ur vi\u00f0 H\u00cd\/Hagstofu \u00cdslands, \u00a0\u00ed doktorsnefnd.<\/p>\n

Ur\u00f0ur Njar\u00f0v\u00edk, pr\u00f3fessor og deildarforseti S\u00e1lfr\u00e6\u00f0ideildar, stj\u00f3rnar ath\u00f6fninni sem fer fram \u00ed H\u00e1t\u00ed\u00f0asal H\u00e1sk\u00f3la \u00cdslands og hefst kl. 14.00.\u00a0<\/p>\n

V\u00f6rninni ver\u00f0ur streymt:\u00a0<\/strong><\/p>\n

Doktorsv\u00f6rn Vigd\u00eds Vala Valgeirsd\u00f3ttir on Livestream<\/a><\/p>\n

\u00c1grip<\/strong><\/p>\n

S\u00ed\u00f0ustu tvo \u00e1ratugi hefur gr\u00ed\u00f0arleg fram\u00fer\u00f3un \u00e1tt s\u00e9r sta\u00f0 \u00e1 svi\u00f0i gerviganglima, en s\u00edfellt h\u00e1\u00fer\u00f3a\u00f0ri lausnir ver\u00f0a a\u00f0gengilegar \u00e1 \u00e1ri hverju. Eigi a\u00f0 s\u00ed\u00f0ur hefur ekki enn tekist a\u00f0 endurheimta fyrri virkni til fulls \u00ed kj\u00f6lfar aflimunar \u00e1 f\u00e6ti. M\u00f3tordrifnir gerviganglimir \u00e1samt taugab\u00fana\u00f0i geta dregi\u00f0 \u00far \u00fev\u00ed misr\u00e6mi sem er til sta\u00f0ar \u00e1 milli heilbrig\u00f0ra ganglima og gerviganglima, me\u00f0 virkri a\u00f0sto\u00f0, mi\u00f0lun skynuppl\u00fdsinga og viljast\u00fdringu \u00fear sem taugav\u00f6\u00f0vamerki eru notu\u00f0 til a\u00f0 stj\u00f3rna gerviganglimum. \u00der\u00e1tt fyrir ni\u00f0urst\u00f6\u00f0ur n\u00fdlegra ranns\u00f3kna sem benda til \u00feess a\u00f0 sl\u00edkar lausnir geti auki\u00f0 velfer\u00f0 f\u00f3lks \u00ed samanbur\u00f0i vi\u00f0 eldri b\u00fana\u00f0 er notkunart\u00ed\u00f0ni \u00e1hyggjuefni og \u00e1hrif n\u00fdrra h\u00e1t\u00e6knilausna tilt\u00f6lulega \u00f3lj\u00f3s. Enn fremur g\u00e6ti n\u00faverandi matsa\u00f0fer\u00f0ir \u00e1 svi\u00f0i gerviganglima skort pr\u00f3ffr\u00e6\u00f0ileg g\u00e6\u00f0i, veri\u00f0 \u00f3vi\u00f0eigandi fyrir \u00fe\u00fd\u00f0i\u00f0 e\u00f0a ekki fanga\u00f0 alla \u00fe\u00e1 sp\u00f6nn hugsm\u00ed\u00f0a sem \u00feeim er \u00e6tla\u00f0 a\u00f0 meta.\u00a0<\/p>\n

\u00cd \u00feessu verkefni t\u00f3ku hagsmunaa\u00f0ilar \u00e1 svi\u00f0inu \u00fe\u00e1tt \u00ed h\u00e1lfst\u00f6\u00f0lu\u00f0um vi\u00f0t\u00f6lum, r\u00fdnish\u00f3psumr\u00e6\u00f0um og samhengisranns\u00f3kn, \u00fear \u00e1 me\u00f0al einstaklingar me\u00f0 gerviganglimi. Einnig var r\u00fdnt markvisst \u00ed matsa\u00f0fer\u00f0ir fyrir gerviganglimi, s\u00e9rstaklega me\u00f0 tilliti til h\u00e1t\u00e6knigerviganglima. Markmi\u00f0 verkefnisins var a\u00f0 1) Kanna \u00f3uppfylltar \u00fearfir einstaklinga me\u00f0 gerviganglimi; 2) Bera kennsl \u00e1 n\u00faverandi og \u00e1\u00e6tla\u00f0an \u00e1vinning af h\u00e1t\u00e6knigerviganglimum sem bj\u00f3\u00f0a upp \u00e1 virka a\u00f0sto\u00f0, mi\u00f0lun skynuppl\u00fdsinga og viljast\u00fdringu; 3) Skilja \u00fe\u00e6r \u00e1skoranir sem felast \u00ed \u00fer\u00f3un og mati \u00e1 sl\u00edkum b\u00fana\u00f0i, \u00e1samt \u00fev\u00ed a\u00f0 4) Meta gagnsemi n\u00faverandi matsa\u00f0fer\u00f0a \u00ed lj\u00f3si n\u00fdrra framfara \u00e1 svi\u00f0inu.<\/p>\n

Ni\u00f0urst\u00f6\u00f0ur benda til \u00feess a\u00f0 gn\u00e6g\u00f0 \u00f3uppfylltra notenda\u00fearfa geti m\u00f6gulega veri\u00f0 fulln\u00e6gt me\u00f0 taugav\u00f6\u00f0vab\u00fana\u00f0i og virkri a\u00f0sto\u00f0 h\u00e1t\u00e6knigerviganglima. Einnig voru borin kennsl \u00e1 fj\u00f6lda \u00e1skorana \u00ed \u00fer\u00f3un og mati \u00e1 h\u00e1\u00fer\u00f3u\u00f0um gerviganglimum \u00e1samt \u00fe\u00f6rf fyrir n\u00fdjar e\u00f0a endurn\u00fdja\u00f0ar matsa\u00f0fer\u00f0ir. A\u00f0 lokum eru tilteknir \u00fe\u00e6ttir sem einstaklingar me\u00f0 gerviganglimi telja mikilv\u00e6ga og atri\u00f0i sem skipta m\u00e1li fyrir \u00fer\u00f3un notendav\u00e6ns b\u00fana\u00f0ar.\u00a0<\/p>\n

English abstract<\/strong><\/p>\n

The field of lower limb prosthetics has advanced rapidly in the past two decades with increasingly sophisticated devices becoming available each year. Nevertheless, function has yet to be fully restored for people with lower limb amputation. Active microprocessor-controlled prostheses and neuromuscular interfacing can decrease the gap between intact- and prosthetic limbs, providing active assistance, sensory feedback, and intent control where signals from the neuromuscular system are used to implement intended action. While recent evidence suggests that such solutions may improve peoples\u2019 function when compared to earlier technology, device abandonment rates are still a concern, and the impact of novel functions is relatively unclear. Furthermore, current evaluation strategies in the field may be psychometrically invalid, inappropriate for the population, or may not capture the whole range of constructs they are intended to measure.<\/p>\n

We conducted semi structured interviews, focus group discussions and a contextual inquiry with multiple stakeholders in the field, coupled with a systematic literature search in order to; 1) Explore unfulfilled lower-limb prosthetic user needs; 2) Identify the current and future benefits of advanced lower-limb prosthetic systems, including ones providing active motion, sensory feedback, and intent control; 3) Understand the challenges associated with developing and evaluating such functions; and 4) Assess the relevance of current evaluation methods in light of new developments within the field of lower limb prosthetics.<\/p>\n

Our results indicate that numerous unmet user requirements may be addressed with neuromuscular interfacing and active motion provided by advanced prostheses. We further identified several challenges in the development and evaluation of advanced prostheses as well as a need for new or updated evaluation strategies. Finally, we present perspectives on factors important for user satisfaction and the actualization of a usable system that reaches end users.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Vigd\u00eds Vala Valgeirsd\u00f3ttir er f\u00e6dd \u00ed Reykjav\u00edk \u00feann 9. mars 1993. H\u00fan lauk st\u00fadentspr\u00f3fi af fornm\u00e1labraut Menntask\u00f3lans \u00ed Reykjav\u00edk \u00e1ri\u00f0 2012, bakkal\u00e1rgr\u00e1\u00f0u \u00ed s\u00e1lfr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 2015 auk meistaragr\u00e1\u00f0u \u00ed s\u00e1lfr\u00e6\u00f0i \u00e1ri\u00f0 2017, einnig fr\u00e1 H\u00e1sk\u00f3la \u00cdslands. Vigd\u00eds starfar n\u00fa vi\u00f0 ranns\u00f3knir hj\u00e1 fyrirt\u00e6kinu \u00d6ssuri hf. Foreldrar Vigd\u00edsar eru \u00c1sta Kristr\u00fan Ragnarsd\u00f3ttir n\u00e1msr\u00e1\u00f0gjafi og Valgeir Gu\u00f0j\u00f3nsson t\u00f3nsk\u00e1ld. Maki Vigd\u00edsar er \u00c1g\u00fast \u00de\u00f3r \u00c1g\u00fastsson, siglingakennari og rafvirki.<\/p>\n<\/div><\/div>","protected":false},"featured_media":5005,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2021-12-02T14:00:00+00:00","_phd_date_end":"2021-12-02T17:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0asalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"Gerviganglimir \u00e1 h\u00e1t\u00e6kni\u00f6ld: \u00dearfir notenda og \u00e1vinningur. 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