Education

Doctor of Medicine (MD) at the Faculty of Medicine, University of Oslo (2004-2011)
Officer training at the Norwegian Armed Forces Medical Service (FSAN) (2013-2014)
Doctorate at the Faculty of Medicine, University of Oslo (2014-2017)

Position

Postdoc (50%) in Rheumatology, Diakonhjemmet Hospital
Specialist (50%) in internal medicine/rheumatology, Diakonhjemmet Hospital
Associate Professor (10%) at the Faculty of Medicine, University of Oslo

Field of interest

Ultrasound of the musculoskeletal system
Ultrasound-guided injection technique (of joints, tendon sheaths, bursa, carpal tunnel syndrome, trigger finger)
Hand arthritis
Biopsy of joints and synovial membranes
Personalized medicine
User participation in research
Randomized controlled trials
MRI of the knee and semi-automated measurement of cartilage thickness and volume (in collaboration with Harvard University, Boston, USA)

Other

In the leadership group of REMEDY Patient Council (user participation in research)
In the management group for the Young Researcher Program and the Mobility program in REMEDY

Email

This email address is protected from spambots. You need JavaScript enabled to view it.

Telephone

+47 97501889

Visiting address

Diakonhjemmet Hospital
Superintendent's residence
Reidar Kobros vei 8
0370 Oslo

Postal address

Diakohjemmet Hospital
PO Box 23 Vinderen
0319 Oslo

Projects

WP6 - Dechiphering long-term outcomes

Hearing loss in rheumatic disease

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Projects

WP2 - PPhenotyping for personalized medicine

MDR-RA

The Norwegian study for therapeutic pharmacovigilance

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Projects

WP1 - Optimized medical interventions

MERINO

Methotrexate in the treatment of erosive hand osteoarthritis

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercise ullamco laboris nisi ut aliquip ex ea commodo consequat.

Publications

Publications retrieved from the National Science Archives (NVA):

Study protocol for the PICASSO trial: A randomized placebo-controlled trial to investigate the efficacy and safety of intraarticular steroid injections and an occupational therapy intervention in painful inflammatory carpometacarpal-1 osteoarthritis

2025

Protocol for the MERINO study: A randomized placebo-controlled trial assessing the efficacy, safety, and cost-effectiveness of methotrexate in people with erosive hand osteoarthritis

2025

The frequency and severity of ultrasound-detected osteoarthritis features in the knees and their associations with pain: Cross-sectional analyzes of the Nor-Hand study

2025

Inflammation as a Treatment Target in Hand Osteoarthritis: A Review of Previous Studies and Future Perspectives

2025

Associations of inflammatory and metabolic biomarkers with incident erosive hand osteoarthritis in the osteoarthritis initiative cohort

2024

Gender differences in patterns of cartilage loss: Data from the Osteoarthritis Initiative

2024

Lessons learned from the PICASSO trial regarding ultrasound examinations of osteoarthritic hand joints performed by occupational therapists

2024

Coagulopathy and adverse outcomes in hospitalized patients with COVID-19: results from the NOR-Solidarity trial

2023

Radiographic joint space width in individuals with hand osteoarthritis: Are their “healthy” joints really healthy?

2023

Predicting total knee arthroplasty from ultrasonography using machine learning

2022

Markers of cellular senescence are associated with persistent pulmonary pathology after COVID-19 infection

2022

High Circulating Levels of the Homeostatic Chemokines CCL19 and CCL21 Predict Mortality and Disease Severity in COVID-19

2022

Persistent T-cell exhaustion in relation to prolonged pulmonary pathology and death after severe COVID-19: Results from two Norwegian cohort studies

2022

Study protocol for the follow-up examination of the Nor-Hand study: A hospital-based observational cohort study exploring pain and biomarkers in people with hand osteoarthritis

2021

Neutrophil count predicts outcome in hospitalized COVID-19 patients. Results from the NOR-Solidarity trial

2021

Cartilage Topography Assessment with Local Area Cartilage Segmentation (LACS) for Knee MRI

2021

Ultrasonography of Inflammatory and Structural Lesions in Hand Osteoarthritis: An Outcome Measures in Rheumatology Agreement and Reliability Study

2021

Urbanization and Knee Cartilage Growth Among Children and Adolescents in Western Kenya

2021

Associations between joint pathologies and central sensitization in persons with hand osteoarthritis: Results from the Nor-Hand study

2021

Erosive Hand Osteoarthritis: Incidence and Predictive Characteristics Among Participants in the Osteoarthritis Initiative

2021

Evaluation of the Effects of Remdesivir and Hydroxychloroquine on Viral Clearance in COVID-19 : A Randomized Trial

2021

Validity and diagnostic performance of fluorescence optical imaging measuring synovitis in hand osteoarthritis: baseline results from the Nor-Hand cohort

2020

Relationship between cam morphology, hip symptoms, and hip osteoarthritis: the Musculoskeletal pain in Ullersaker STudy (MUST) cohort

2020

Associations Between Ultrasound-Detected Synovitis, Pain and Function in Interphalangeal and Thumb Base Osteoarthritis: Data From the Nor-Hand Study

2019

Biomarkers of cardiovascular risk across phenotypes of osteoarthritis

2019

Smoking and alcohol use are associated with structural and inflammatory hand osteoarthritis features

2017

Ultrasound-detected osteophytes predict the development of radiographic and clinical features of hand osteoarthritis in the same finger joints 5 years later

2017

A hospital-based observational cohort study exploring pain and biomarkers in patients with hand osteoarthritis in Norway: The Nor-Hand protocol

2017

Synovitis in osteoarthritis: Current understanding with therapeutic implications

2017

Imaging of osteoarthritis (OA): What is new?

2016

Synovitis and radiographic progression in non-erosive and erosive hand osteoarthritis: is erosive hand osteoarthritis a separate inflammatory phenotype?

2016

Ultrasound-detected inflammation predicts radiographic progression in hand osteoarthritis after 5 years

2016

Global ultrasound assessment of structural lesions in osteoarthritis: a reliability study by the OMERACT ultrasonography group on scoring cartilage and osteophytes in finger joints

2016

The impact of newer biological disease modifying anti-rheumatic drugs on cardiovascular risk factors: A 12-month longitudinal study in rheumatoid arthritis patients treated with rituximab, abatacept and tociliziumab

2015

Ultrasonographic assessment of osteophytes in 127 patients with hand osteoarthritis: exploring reliability and associations with MRI, radiographs and clinical joint findings

2013

Alexander Mathiessen

Education

Position

Field of interest

Other

Email

Telephone

Visiting address

Postal address

Projects

Hearing loss in rheumatic disease

Projects

MDR-RA

Projects

MERINO

Publications

Publications retrieved from the National Science Archives (NVA):

Study protocol for the PICASSO trial: A randomized placebo-controlled trial to investigate the efficacy and safety of intraarticular steroid injections and an occupational therapy intervention in painful inflammatory carpometacarpal-1 osteoarthritis

Protocol for the MERINO study: A randomized placebo-controlled trial assessing the efficacy, safety, and cost-effectiveness of methotrexate in people with erosive hand osteoarthritis

The frequency and severity of ultrasound-detected osteoarthritis features in the knees and their associations with pain: Cross-sectional analyzes of the Nor-Hand study

Inflammation as a Treatment Target in Hand Osteoarthritis: A Review of Previous Studies and Future Perspectives

Associations of inflammatory and metabolic biomarkers with incident erosive hand osteoarthritis in the osteoarthritis initiative cohort

Gender differences in patterns of cartilage loss: Data from the Osteoarthritis Initiative

Lessons learned from the PICASSO trial regarding ultrasound examinations of osteoarthritic hand joints performed by occupational therapists

Coagulopathy and adverse outcomes in hospitalized patients with COVID-19: results from the NOR-Solidarity trial

Radiographic joint space width in individuals with hand osteoarthritis: Are their “healthy” joints really healthy?

Predicting total knee arthroplasty from ultrasonography using machine learning

Markers of cellular senescence are associated with persistent pulmonary pathology after COVID-19 infection

High Circulating Levels of the Homeostatic Chemokines CCL19 and CCL21 Predict Mortality and Disease Severity in COVID-19

Persistent T-cell exhaustion in relation to prolonged pulmonary pathology and death after severe COVID-19: Results from two Norwegian cohort studies

Study protocol for the follow-up examination of the Nor-Hand study: A hospital-based observational cohort study exploring pain and biomarkers in people with hand osteoarthritis

Neutrophil count predicts outcome in hospitalized COVID-19 patients. Results from the NOR-Solidarity trial

Cartilage Topography Assessment with Local Area Cartilage Segmentation (LACS) for Knee MRI

Ultrasonography of Inflammatory and Structural Lesions in Hand Osteoarthritis: An Outcome Measures in Rheumatology Agreement and Reliability Study

Urbanization and Knee Cartilage Growth Among Children and Adolescents in Western Kenya

Associations between joint pathologies and central sensitization in persons with hand osteoarthritis: Results from the Nor-Hand study

Erosive Hand Osteoarthritis: Incidence and Predictive Characteristics Among Participants in the Osteoarthritis Initiative

Evaluation of the Effects of Remdesivir and Hydroxychloroquine on Viral Clearance in COVID-19 : A Randomized Trial

Validity and diagnostic performance of fluorescence optical imaging measuring synovitis in hand osteoarthritis: baseline results from the Nor-Hand cohort

Relationship between cam morphology, hip symptoms, and hip osteoarthritis: the Musculoskeletal pain in Ullersaker STudy (MUST) cohort

Associations Between Ultrasound-Detected Synovitis, Pain and Function in Interphalangeal and Thumb Base Osteoarthritis: Data From the Nor-Hand Study

Biomarkers of cardiovascular risk across phenotypes of osteoarthritis

Smoking and alcohol use are associated with structural and inflammatory hand osteoarthritis features

Ultrasound-detected osteophytes predict the development of radiographic and clinical features of hand osteoarthritis in the same finger joints 5 years later

A hospital-based observational cohort study exploring pain and biomarkers in patients with hand osteoarthritis in Norway: The Nor-Hand protocol

Synovitis in osteoarthritis: Current understanding with therapeutic implications

Imaging of osteoarthritis (OA): What is new?

Synovitis and radiographic progression in non-erosive and erosive hand osteoarthritis: is erosive hand osteoarthritis a separate inflammatory phenotype?

Ultrasound-detected inflammation predicts radiographic progression in hand osteoarthritis after 5 years

Global ultrasound assessment of structural lesions in osteoarthritis: a reliability study by the OMERACT ultrasonography group on scoring cartilage and osteophytes in finger joints

The impact of newer biological disease modifying anti-rheumatic drugs on cardiovascular risk factors: A 12-month longitudinal study in rheumatoid arthritis patients treated with rituximab, abatacept and tociliziumab

Ultrasonographic assessment of osteophytes in 127 patients with hand osteoarthritis: exploring reliability and associations with MRI, radiographs and clinical joint findings

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