{"id":6316,"date":"2026-10-19T09:48:45","date_gmt":"2026-10-19T09:48:45","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-lif-og-laeknavisindum-micah-kerwin-nicholls\/"},"modified":"2026-10-19T09:48:45","modified_gmt":"2026-10-19T09:48:45","slug":"doktorsvorn-i-lif-og-laeknavisindum-micah-kerwin-nicholls","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-lif-og-laeknavisindum-micah-kerwin-nicholls\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed l\u00edf- og l\u00e6knav\u00edsindum – Micah Kerwin Nicholls"},"content":{"rendered":"
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Fimmtudaginn 27. okt\u00f3ber ver Micah Kerwin Nicholls doktorsritger\u00f0 s\u00edna \u00ed l\u00edf- og l\u00e6knav\u00edsindum vi\u00f0 L\u00e6knadeild H\u00e1sk\u00f3la \u00cdslands. Ritger\u00f0in ber heiti\u00f0: Faraldsfr\u00e6\u00f0ileg ranns\u00f3kn \u00e1 \u00e1verkum fremra krossbands \u00e1 \u00cdslandi. An epidemiological study of ACL injury in Iceland.<\/p>\n

Andm\u00e6lendur eru dr. Gregory B. Maletis, yfirma\u00f0ur b\u00e6klunarskur\u00f0l\u00e6kninga hj\u00e1 Kaiser Permanente \u00ed Bandar\u00edkjunum, og dr. Sigr\u00ed\u00f0ur L\u00e1ra Gu\u00f0mundsd\u00f3ttir, yfirrannsakandi hj\u00e1 Sidekick health, Reykjav\u00edk.<\/p>\n

Umsj\u00f3narkennari var Krist\u00edn Briem, pr\u00f3fessor vi\u00f0 n\u00e1msbraut \u00ed sj\u00fakra\u00fej\u00e1lfun, L\u00e6knadeild, og lei\u00f0beinandi var \u00deorvaldur Ingvarsson, skur\u00f0l\u00e6knir. Auk \u00feeirra s\u00e1tu \u00ed doktorsnefnd Michael Torry, pr\u00f3fessor, Stefan Lohmander, pr\u00f3fessor emeritus, og Lynn Snyder-Mackler, pr\u00f3fessor.<\/p>\n

S\u00f3lveig \u00c1sa \u00c1rnad\u00f3ttir, pr\u00f3fessor og n\u00e1msbrautarstj\u00f3ri \u00ed sj\u00fakra\u00fej\u00e1lfun, stj\u00f3rnar ath\u00f6fninni sem fer fram \u00ed H\u00e1t\u00ed\u00f0asal H\u00e1sk\u00f3la \u00cdslands og hefst kl. 13.00.<\/p>\n

V\u00f6rninini ver\u00f0ur streymt:\u00a0<\/p>\n

https:\/\/livestream.com\/hi\/doktorsvornmicahkerwinnicholls<\/a><\/p>\n

\u00c1grip<\/strong>\u00a0<\/strong><\/p>\n

Slit \u00e1 fremra krossbandi (FK) \u00ed hn\u00e9 eru alvarleg og afdrifar\u00edk mei\u00f0sli fyrir \u00feann sem fyrir \u00feeim ver\u00f0ur, en einnig kostna\u00f0ars\u00f6m fyrir samf\u00e9lagi\u00f0. \u00deau g\u00f6gn sem til eru um umfang \u00e1verkans tengjast a\u00f0 langmestu leyti skur\u00f0a\u00f0ger\u00f0um og reikna \u00fev\u00ed ekki me\u00f0 \u00e1verkum sem eru me\u00f0h\u00f6ndla\u00f0ir \u00e1n skur\u00f0a\u00f0ger\u00f0ar. Markmi\u00f0 verkefnisins var \u00fev\u00ed a\u00f0 gera faraldsfr\u00e6\u00f0ilega ranns\u00f3kn \u00e1 krossbandsslitum \u00e1 \u00cdslandi, \u00f3h\u00e1\u00f0 me\u00f0fer\u00f0, og aflei\u00f0ingum \u00feeirra. N\u00fdgengi \u00e1verka \u00e1 FK var greint me\u00f0 tilliti til aldurs og kyns, og sta\u00f0setningar og tegundir samfarandi mei\u00f0sla voru skr\u00e1\u00f0ar. \u00de\u00e6ttir sem geta haft \u00e1hrif \u00e1 hn\u00e9heilsu \u00ed kj\u00f6lfar slits \u00e1 FK voru s\u00ed\u00f0an metnir.<\/p>\n

Ni\u00f0urst\u00f6\u00f0ur allra segul\u00f3mana \u00e1 hn\u00e9 yfir \u00e1rabili\u00f0 2001 til 2011 var safna\u00f0 saman og hugb\u00fana\u00f0ur nota\u00f0ur til a\u00f0 finna FK-\u00e1verka, og tegund og sta\u00f0setningu samfarandi \u00e1verka. G\u00f6gn fr\u00e1 \u00fej\u00f3\u00f0skr\u00e1 voru notu\u00f0 til a\u00f0 reikna n\u00fdgengi FK-slita, en g\u00f6gn fr\u00e1 Sj\u00fakratryggingum \u00cdslands notu\u00f0 til a\u00f0 sta\u00f0festa hversu margir undirgengust endurger\u00f0 \u00e1 FK me\u00f0 skur\u00f0a\u00f0ger\u00f0. \u00d6llum einstaklingum sem greindust me\u00f0 hugsanlegt slit \u00e1 FK var bo\u00f0i\u00f0 a\u00f0 taka \u00fe\u00e1tt \u00ed spurningalistak\u00f6nnun \u00fear sem uppl\u00fdsingum var safna\u00f0 um tilur\u00f0 \u00e1verkans og me\u00f0fer\u00f0, auk spurninga um hn\u00e9heilsu. Sv\u00f6rin voru notu\u00f0 til a\u00f0 meta samband n\u00faverandi hn\u00e9heilsu og m\u00f6gulegra \u00e1hrifa\u00fe\u00e1tta.<\/p>\n

N\u00fdgengi FK slita var 75\/100.000. Aldurssta\u00f0la\u00f0 n\u00fdgengi var h\u00e6st vi\u00f0 23 \u00e1ra aldur hj\u00e1 k\u00f6rlum en vi\u00f0 18 \u00e1r hj\u00e1 konum, sem voru me\u00f0 annan mei\u00f0slatopp vi\u00f0 39 \u00e1ra aldur. \u00cd 87% tilfella fundust a\u00f0 minnsta kosti ein samfarandi mei\u00f0sli og voru li\u00f0\u00fe\u00f3fa\u00e1verkar algengastir. Fj\u00f6ldi samfarandi mei\u00f0sla tengdist aldri \u00e1 \u00feann h\u00e1tt a\u00f0 \u00feau voru fleiri \u00ed yngri aldursh\u00f3pum. Nokkrir \u00fe\u00e6ttir tengdust verri hn\u00e9heilsu, s\u00e9rstaklega \u00fe\u00f3 endurteki\u00f0 slit \u00e1 FK og t\u00f3baksreykingar, en saga um a\u00f0 hafa sliti\u00f0 FK vi\u00f0 \u00ed\u00fer\u00f3ttai\u00f0kun tengdist hins vegar betri \u00fatkomu.<\/p>\n

Ni\u00f0urst\u00f6\u00f0urnar varpa lj\u00f3si \u00e1 umfang og alvarleika mei\u00f0slanna og gagnast vi\u00f0 a\u00f0 \u00e1\u00e6tla horfur einstaklinga sem ver\u00f0a fyrir \u00feeim og til a\u00f0 meta kostna\u00f0 \u00ed heilbrig\u00f0iskerfinu. Mikilv\u00e6gi \u00feess a\u00f0 fyrirbyggja endurtekin mei\u00f0sli er lj\u00f3st og gildi fr\u00e6\u00f0slu um neikv\u00e6\u00f0 \u00e1hrif reykinga.<\/p>\n

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

Rupture of the ACL ligament is considered an epidemic, particularly among girls and the consequences of this injury, both in the immediate and long -term can be devastating for the individual as well as a major cost burden for society. The majority of data we have on the extent of the problem come from surgical registries that do not account for ACL injuries that are not surgically repaired. The goal of this project was to calculate the total incidence of ACL rupture and its distribution by age and sex in Iceland regardless of treatment. Alongside the ACL injury it is common to injure other structures within the knee and this project aimed to describe the distribution of those concomitant injuries by age, sex, and anatomical location. Finally, potential factors associated with future knee health following an ACL rupture were assessed.<\/p>\n

To calculate the incidence of ACL rupture and concomitant injuries all knee MRIs taken in Iceland between 2001 and 2011 were reviewed to identify those with damaged ACLs. These data were used alongside population data taken from Statistics Iceland to determine the incidence of ACL injury by sex and age as well as the distribution of concomitant injuries. All patients with a potential ACL tear were invited to complete an online questionnaire. Questions were posed regarding the circumstances, timing and treatment of their injury as well as the current health of their knee. These responses were used to understand the relationship between their current knee health and factors such as treatment, activity at time of injury, time since injury and concomitant damage.<\/p>\n

The incidence of ACL rupture in Iceland was found to be 75 per 100,000 person-years. There were differences between the sexes with males showing a single peak at 23 years of age and women two peaks at 18 and 39. Concomitant injuries were seen in 87% of knees, the most common being a meniscal tear. The extent of concomitant injuries was strongly related to age at injury. A number of factors were associated with worse knee health including reinjury to the ACL and smoking. Conversely, injuring your ACL during sports was associated with better outcomes.<\/p>\n

These data can be used to more efficiently direct health resources within the Icelandic healthcare system as well as to improve prognostic accuracy. Furthermore, they show the importance of preventing re-injury and not smoking.<\/p>\n

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

Micah Kerwin Nicholls f\u00e6ddist \u00ed Bretlandi 1975. Hann \u00fatskrifa\u00f0ist fr\u00e1 University of Manchester \u00e1ri\u00f0 1999 me\u00f0 MS-gr\u00e1\u00f0u \u00ed rafmagnsverkfr\u00e6\u00f0i. Hann starfa\u00f0i \u00e1 \u00fev\u00ed svi\u00f0i \u00ed nokkur \u00e1r en b\u00e6tti s\u00ed\u00f0an vi\u00f0 sig BS-gr\u00e1\u00f0u \u00ed oste\u00f3pat\u00edu fr\u00e1 British College of Osteopathic Medicine \u00e1ri\u00f0 2006. Micah h\u00f3f st\u00f6rf hj\u00e1 sto\u00f0t\u00e6kjafyrirt\u00e6kinu \u00d6ssuri sem kl\u00edn\u00edskur rannsakandi \u00e1ri\u00f0 2009 og h\u00f3f doktorsn\u00e1m vi\u00f0 H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 2011. Hann starfar n\u00fa fyrir \u00d6ssur \u00ed Bandar\u00edkjunum \u00fear sem hann b\u00fdr \u00e1samt eiginkonu sinni, Fr\u00ed\u00f0u Hauksd\u00f3ttur, en b\u00f6rn \u00feeirra eru Tina Naomi og Vi\u00f0ar Haukur.<\/p>\n

Micah Kerwin Nicholls was born in the UK in 1975. He graduated in 1999 with an MEng in electronic engineering from the University of Manchester. After working in this field for a few years he returned to university and in 2006 graduated from the British College of Osteopathic Medicine with a BSc. In 2009 Micah started working at \u00d6ssur as a clinical researcher and in 2011 began his PhD studies at UI. He currently resides in California with his wife, Frida Hauksdottir and two children, Tina Naomi and Vidar Haukur.<\/p>\n<\/div><\/div>","protected":false},"featured_media":5597,"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":"2022-10-27T13:00:00+00:00","_phd_date_end":"2022-10-27T16:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0asalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"Faraldsfr\u00e6\u00f0ileg ranns\u00f3kn \u00e1 \u00e1verkum fremra krossbands \u00e1 \u00cdslandi. 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