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About me

I’m an orthopaedic surgeon at Danderyd’s Hospital, PhD and researcher at the Karolinska Institute. I am also the organiser for the Stockholm R-User Group, we are 400-500 a group of users that meet 4-6 times per year to discuss statistics, machine learning, and visualization under the R umbrella. I also have a research blog, G-forge, and a Github repository with my R-packages.


Research description

My main research interests are currently epidemiology and machine learning. I finished my thesis in May 2014 titled “Evaluation of patient related factors influencing outcomes after total hip replacement”.  In collaboration with the Swedish Hip Arthroplasty Register we looked at basic factors, such as age, sex, and comorbidities, and how they influence total hip replacement outcomes. The work spurred me to look at advanced statistics and especially how to convey these graphically so that anyone can grasp the fundamentals of the results.

Apart from epidemiology I am interested in machine learning, especially neural networks and deep learning, and how to apply these methods in order to improve orthopaedic health-care. Machine learning has frequently been inaccessible to health care as it often requires massive amounts of data. With the digitalization of most of our tools and advent of new data collection technologies the data is now within our grasp. We are currently working with KTH data science department; a collaboration that we hope will lead to improved patient-safety, health-care efficiency, and patient outcomes.


Artificial intelligence for analyzing orthopedic trauma radiographs
Olczak J, Fahlberg N, Maki A, Razavian As, Jilert A, Stark A, et al
Acta orthopaedica 2017;88(6):581-586

Primary tumor sites in relation to ultraviolet radiation exposure and skin visibility correlate with survival in cutaneous melanoma
Gordon D, Hansson J, Eloranta S, Gordon M, Gillgren P, Smedby Ke
International journal of cancer 2017;141(7):1345-1354

Risk of early mortality after cemented compared with cementless total hip arthroplasty: a nationwide matched cohort study
Garland A, Gordon M, Garellick G, Kärrholm J, Sköldenberg O, Hailer Np
The bone & joint journal 2017;99-B(1):37-43

Waiting time to surgery is correlated with an increased risk of serious adverse events during hospital stay in patients with hip-fracture: A cohort study
Kelly-pettersson P, Samuelsson B, Muren O, Unbeck M, Gordon M, Stark A, et al
International journal of nursing studies 2017;69():91-97

A Prospective Observational Cohort Study on Orthopaedic and Anaesthetic Registrars Performing Femoral Nerve Block on Patients with an Acute Hip Fracture
Thelaus Å, Pettersson T, Gordon M, Krupic F, Sköldenberg O
Surgery research and practice 2016;2016():7512360-

Increased Long-Term Cardiovascular Risk After Total Hip Arthroplasty: A Nationwide Cohort Study
Gordon M, Rysinska A, Garland A, Rolfson O, Aspberg S, Eisler T, et al
Medicine 2016;95(6):e2662-

Is the use of antidepressants associated with patient-reported outcomes following total hip replacement surgery?
Greene Me, Rolfson O, Gordon M, Annerbrink K, Malchau H, Garellick G
Acta orthopaedica 2016;87(5):444-51

Loss of offset after pertrochanteric hip fractures affects hip function one year after surgery with a short intramedullary nail. A prospective cohort study
Gordon M, Berntsson Po, Sjölund E, Demir Y, Hedbeck Cj, Stark A, et al
International orthopaedics 2016;40(4):799-806

Improved statistical analysis of pre- and post-treatment patient-reported outcome measures (PROMs): the applicability of piecewise linear regression splines
Greene Me, Rolfson O, Garellick G, Gordon M, Nemes S
Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation 2015;24(3):567-73

Standard Comorbidity Measures Do Not Predict Patient-reported Outcomes 1 Year After Total Hip Arthroplasty
Greene Me, Rolfson O, Gordon M, Garellick G, Nemes S
Clinical orthopaedics and related research 2015;473(11):3370-9

Time trends in incidence of cutaneous melanoma by detailed anatomical location and patterns of ultraviolet radiation exposure: a retrospective population-based study
Gordon D, Gillgren P, Eloranta S, Olsson H, Gordon M, Hansson J, et al
Melanoma research 2015;25(4):348-56

Variability of platelet aggregation in patients with clopidogrel treatment and hip fracture: A retrospective case-control study on 112 patients
Clareus A, Fredriksson I, Wallén H, Gordon M, Stark A, Sköldenberg O
World journal of orthopedics 2015;6(5):439-45

Age- and health-related quality of life after total hip replacement: decreasing gains in patients above 70 years of age
Gordon M, Greene M, Frumento P, Rolfson O, Garellick G, Stark A
Acta orthopaedica 2014;85(3):244-9

Deep infection after total hip replacement: a method for national incidence surveillance
Lindgren V, Gordon M, Wretenberg P, Kärrholm J, Garellick G
Infection control and hospital epidemiology 2014;35(12):1491-6

Different patient-reported outcomes in immigrants and patients born in Sweden: 18,791 patients with 1 year follow-up in the Swedish Hip Arthroplasty Registry
Krupic F, Garellick G, Gordon M, Kärrholm J
Acta orthopaedica 2014;85(3):221-8

Education attainment is associated with patient-reported outcomes: findings from the Swedish Hip Arthroplasty Register
Greene Me, Rolfson O, Nemes S, Gordon M, Malchau H, Garellick G
Clinical orthopaedics and related research 2014;472(6):1868-76

Projections of total hip replacement in Sweden from 2013 to 2030
Nemes S, Gordon M, Rogmark C, Rolfson O
Acta orthopaedica 2014;85(3):238-43

Validation of reoperations due to infection in the Swedish Hip Arthroplasty Register
Lindgren Jv, Gordon M, Wretenberg P, Kärrholm J, Garellick G
BMC musculoskeletal disorders 2014;15():384-

Women in Charnley class C fail to improve in mobility to a higher degree after total hip replacement
Gordon M, Frumento P, Skoldenberg O, Greene M, Garellick G, Rolfson O
ACTA ORTHOPAEDICA 2014;85(4):335-41

Factors influencing health-related quality of life after total hip replacement--a comparison of data from the Swedish and Danish hip arthroplasty registers
Gordon M, Paulsen A, Overgaard S, Garellick G, Pedersen Ab, Rolfson O
BMC musculoskeletal disorders 2013;14():316-

No influence of immigrant background on the outcome of total hip arthroplasty. 140,299 patients born in Sweden and 11,539 immigrants in the Swedish Hip Arthroplasty Register
Krupic F, Eisler T, Eliasson T, Garellick G, Gordon M, Kärrholm J
Acta orthopaedica 2013;84(1):18-24

The influence of comorbidity scores on re-operations following primary total hip replacement: comparison and validation of three comorbidity measures
Gordon M, Stark A, Sköldenberg Og, Kärrholm J, Garellick G
The bone & joint journal 2013;95-B(9):1184-91

Molecular epidemiology of Mycobacterium tuberculosis in western Sweden
Brudey K, Gordon M, Mostrom P, Svensson L, Jonsson B, Sola C, et al

Snapshot of moving and expanding clones of Mycobacterium tuberculosis and their global distribution assessed by spoligotyping in an international study
Filliol I, Driscoll Jr, Van Soolingen D, Kreiswirth Bn, Kremer K, Valetudie G, et al

Global distribution of Mycobacterium tuberculosis spoligotypes
Filliol I, Driscoll Jr, Van Soolingen D, Kreiswirth Bn, Kremer K, Valetudie G, et al

Methods used in the molecular epidemiology of tuberculosis
Mostrom P, Gordon M, Sola C, Ridell M, Rastogi N

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