OUH - Ostearthritis

May Arna Risberg

Professor; PT, PhD
+47 413 12 776

Alternative email adress: m.a.risberg@nih.no

May Arna Risberg is professor of Sport Physical Therapy at the Norwegian School Sport Sciences (50%) and the Department of Orthopedic Surgery, Oslo University Hospital (50%). She is the chair of the Norwegian Research Center for Active Rehabilitation (NAR), and the co-chair of the Osteoarthritis Research Group, Oslo University Hospital, funded by the South Eastern Norway Health Authority. She has an extensive international collaboration and holds an Adjunct Clinical Professor position at the Department of Physical Therapy, College of Arts & Sciences, University of Delaware, USA. She has for the last 10 years a formal collaboration with the University of Delaware (Professor Lynn Snyder-Mackler) with a National Institutes of Health grant (NIH), as well as formal collaborations with the University of Southern Denmark (Professor Ewa Roos) and an international grant with Professor Kay Crossley and Dr Joanne Kemp (Australia). Her main research area is active rehabilitation of knee injuries, and knee and hip osteoarthritis. She has been the main supervisor of 9 PhD students who have successfully defended their thesis, as well as 3 postdocs. She has published more than 100 original research articles, systematic reviews, and book chapters, with a citation index (H-index) of 26.

EDUCATION:
University of Oslo, Faculty of Medicine, Oslo Norway, 1999
Doctor Philosophiae
Oslo University College, Faculty of Health Sciences, 1988
Candidata magisterii
Oslo University College, Faculty of Health Sciences, 1988
Bachelor of Physiotherapy

CURRENT POSITIONS:
2003 NORWEGIAN RESEARCH CENTER FOR ACTIVE REHABILITATION (NAR), Department of Orthopaedic Surgery, Oslo University Hospital, Ullevål, Oslo
Present Chair
2006 NIMI, Sports Medicine Center, Oslo, Norway
Present Researcher physical therapist
2008 UNIVERSITY OF DELAWARE, Dept. of Physical Therapy, College of Arts & Sciences
Present Adjunct Clinical Professor
2010 NORWEGIAN SCHOOL OF SPORT SCIENCES, Dept. of Sports Medicine, Oslo
Present Professor in Physical Therapy

OTHER EXPERIENCE & QUALIFICATIONS

Visiting professor, Health and Rehabilitation Sciences, Division of Physiotherapy, University of Queensland, Brisbane, Australia (July 2013-January 2014);
Guest professor, Interdisciplinary program in Biomechanics and Movement Science, Physical Therapy Department, University of Delaware (February 2002-July 2002)
Associate professor, Norwegian School Sport Sciences, Oslo (2006-2010); Chair, Research unit (FOU), Orthopaedic Center, Ullevål University Hospital (2003-2010); Post-Doctoral Fellow, Funding Norwegian Research Council, Orthopaedic Center, Ullevaal University Hospital and University of Delaware (2002-2005); Senior researcher, Center for Clinical Research, Ullevaal University Hospital (1999-2003); PhD student, Funding Norwegian Research Council, Medical faculty, IOKS, University of Oslo (1998-1999); PhD student, McClure Muskuloskeletal Research Center, Department of Orthopaedic and Rehabilitation, University of Vermont Funding: Norwegian Research Council (1997-1998); PhD student, Medical faculty, IOKS, University of Oslo, (60% position) (1996-9197); Clinical Research Physical Therapist (50% position), Orthopaedic Center, Ullevaal University Hospital. 1994-1996 (50% clinical researcher and 50% physical therapist: out-patient clinic); Staff Physical Therapist, Outpatient clinic, Othopaedic Center, Ullevaal University Hospital (1992-1996); Chairman, Physical Therapy, Surgical Department, Akershus Universitetssykehus (1990-1992); Physical therapist, Stabekk Fysikalske Institutt (driftsavtale Bærum kommune) (1988-1989); Staff Physical Therapist, Orthopaedic Center, Ullevaal University Hospital (1987-1990)
Advisor for the following Ph.D. students: Birgitta Blakstad Nilsson (Nov 2009), Åse Sagen ( Jan 2010). Ingrid Eitzen (Aug 2010), Linda Fernandes (Jan 2011), Britt Elin Øiestad (Jan 2011), Håvard Moksnes (May 2013), Hege Grindem (2014), Ida Svege (2014), Barbara Wondrasch (2015). Co-supervisor: Silje Stensrud (2013) (main supervisor professor Ewa Roos, Southern University, Denmark). Current phd students: Kari Anne Hakestad (2009-2015), Nina Kise (2011-2016). Current co-supervisor: Cathrine Aga (2012-2015) and Gilbert Moatshe (2015-2017) (main supervisor: professor Lars Engebretsen).

Download CV in Word format, including Selected publications

Original articles

Grindem H, Engebretsen L, Axe M, Snyder-Mackler L, Risberg MA (2020)
Activity and functional readiness, not age, are the critical factors for second anterior cruciate ligament injury - the Delaware-Oslo ACL cohort study
Br J Sports Med (in press)
DOI 10.1136/bjsports-2019-100623, PubMed 32046955

Reiman MP, Agricola R, Kemp JL, Heerey JJ, Weir A, van Klij P, Kassarjian A, Mosler AB, Ageberg E, Hölmich P, Warholm KM, Griffin D, Mayes S, Khan KM, Crossley KM, Bizzini M, Bloom N, Casartelli NC, Diamond LE, Di Stasi S, Drew M, Friedman DJ, Freke M, Gojanovic B, Glyn-Jones S et al. (2020)
Consensus recommendations on the classification, definition and diagnostic criteria of hip-related pain in young and middle-aged active adults from the International Hip-related Pain Research Network, Zurich 2018
Br J Sports Med (in press)
DOI 10.1136/bjsports-2019-101453, PubMed 31959678

Svinøy OE, Bergland A, Risberg MA, Pripp AH, Hilde G (2019)
Better before-better after: efficacy of prehabilitation for older patients with osteoarthritis awaiting total hip replacement-a study protocol for a randomised controlled trial in South-Eastern Norway
BMJ Open, 9 (12), e031626
DOI 10.1136/bmjopen-2019-031626, PubMed 31892650

Reimer LCU, Jakobsen SS, Mortensen L, Dalgas U, Jacobsen JS, Soballe K, Bere T, Madsen JE, Nordsletten L, Risberg MA, Mechlenburg I (2019)
Efficacy of periacetabular osteotomy followed by progressive resistance training compared to progressive resistance training as non-surgical treatment in patients with hip dysplasia (PreserveHip) - a protocol for a randomised controlled trial
BMJ Open, 9 (12), e032782
DOI 10.1136/bmjopen-2019-032782, PubMed 31874882

Mosler AB, Kemp J, King M, Lawrenson PR, Semciw A, Freke M, Jones DM, Casartelli NC, Wörner T, Ishøi L, Ageberg E, Diamond LE, Hunt MA, Di Stasi S, Reiman MP, Drew M, Friedman D, Thorborg K, Leunig M, Bizzini M, Khan KM, Crossley KM, Agricola R, Bloom N, Dijkstra HP et al. (2019)
Standardised measurement of physical capacity in young and middle-aged active adults with hip-related pain: recommendations from the first International Hip-related Pain Research Network (IHiPRN) meeting, Zurich, 2018
Br J Sports Med (in press)
DOI 10.1136/bjsports-2019-101457, PubMed 31857334

Kemp JL, Risberg MA, Mosler A, Harris-Hayes M, Serner A, Moksnes H, Bloom N, Crossley KM, Gojanovic B, Hunt MA, Ishøi L, Mathieu N, Mayes S, Scholes MJ, Gimpel M, Friedman D, Ageberg E, Agricola R, Casartelli NC, Diamond LE, Dijkstra HP, Di Stasi S, Drew M, Freke M, Griffin D et al. (2019)
Physiotherapist-led treatment for young to middle-aged active adults with hip-related pain: consensus recommendations from the International Hip-related Pain Research Network, Zurich 2018
Br J Sports Med (in press)
DOI 10.1136/bjsports-2019-101458, PubMed 31732651

Weldingh E, Johnsen MB, Hagen KB, Østerås N, Risberg MA, Natvig B, Slatkowsky-Christensen B, Fenstad AM, Furnes O, Nordsletten L, Magnusson K (2019)
The Maternal and Paternal Effects on Clinically and Surgically Defined Osteoarthritis
Arthritis Rheumatol, 71 (11), 1844-1848
DOI 10.1002/art.41023, PubMed 31237417

Thoma L, Grindem H, Logerstedt D, Axe M, Engebretsen L, Risberg MA, Snyder-Mackler L (2019)
Coper Classification Early After ACL Rupture Changes With Progressive Neuromuscular and Strength Training and Is Associated With 2-Year Success: Response
Am J Sports Med, 47 (11), NP65-NP66
DOI 10.1177/0363546519863309, PubMed 31479325

Capin JJ, Failla M, Zarzycki R, Dix C, Johnson JL, Smith AH, Risberg MA, Huston LJ, Spindler KP, Snyder-Mackler L (2019)
Superior 2-Year Functional Outcomes Among Young Female Athletes After ACL Reconstruction in 10 Return-to-Sport Training Sessions: Comparison of ACL-SPORTS Randomized Controlled Trial With Delaware-Oslo and MOON Cohorts
Orthop J Sports Med, 7 (8), 2325967119861311
DOI 10.1177/2325967119861311, PubMed 31413963

Kise NJ, Aga C, Engebretsen L, Roos EM, Tariq R, Risberg MA (2019)
Complex Tears, Extrusion, and Larger Excision Are Prognostic Factors for Worse Outcomes 1 and 2 Years After Arthroscopic Partial Meniscectomy for Degenerative Meniscal Tears: A Secondary Explorative Study of the Surgically Treated Group From the Odense-Oslo Meniscectomy Versus Exercise (OMEX) Trial
Am J Sports Med, 47 (10), 2402-2411
DOI 10.1177/0363546519858602, PubMed 31298923

Emery CA, Whittaker JL, Mahmoudian A, Lohmander LS, Roos EM, Bennell KL, Toomey CM, Reimer RA, Thompson D, Ronsky JL, Kuntze G, Lloyd DG, Andriacchi T, Englund M, Kraus VB, Losina E, Bierma-Zeinstra S, Runhaar J, Peat G, Luyten FP, Snyder-Mackler L, Risberg MA, Mobasheri A, Guermazi A, Hunter DJ et al. (2019)
Establishing outcome measures in early knee osteoarthritis
Nat Rev Rheumatol, 15 (7), 438-448
DOI 10.1038/s41584-019-0237-3, PubMed 31201386

Ekås GR, Laane MM, Larmo A, Moksnes H, Grindem H, Risberg MA, Engebretsen L (2019)
Knee Pathology in Young Adults After Pediatric Anterior Cruciate Ligament Injury: A Prospective Case Series of 47 Patients With a Mean 9.5-Year Follow-up
Am J Sports Med, 47 (7), 1557-1566
DOI 10.1177/0363546519837935, PubMed 31034243

Thoma LM, Grindem H, Logerstedt D, Axe M, Engebretsen L, Risberg MA, Snyder-Mackler L (2019)
Coper Classification Early After Anterior Cruciate Ligament Rupture Changes With Progressive Neuromuscular and Strength Training and Is Associated With 2-Year Success: The Delaware-Oslo ACL Cohort Study
Am J Sports Med, 47 (4), 807-814
DOI 10.1177/0363546519825500, PubMed 30790527

Ekås GR, Moksnes H, Grindem H, Risberg MA, Engebretsen L (2018)
Coping With Anterior Cruciate Ligament Injury From Childhood to Maturation: A Prospective Case Series of 44 Patients With Mean 8 Years' Follow-up
Am J Sports Med, 47 (1), 22-30
DOI 10.1177/0363546518810750, PubMed 30476435

Kise NJ, Roos EM, Stensrud S, Engebretsen L, Risberg MA (2018)
The 6-m timed hop test is a prognostic factor for outcomes in patients with meniscal tears treated with exercise therapy or arthroscopic partial meniscectomy: a secondary, exploratory analysis of the Odense-Oslo meniscectomy versus exercise (OMEX) trial
Knee Surg Sports Traumatol Arthrosc, 27 (8), 2478-2487
DOI 10.1007/s00167-018-5241-7, PubMed 30446783

Risberg MA, Holm I, Engebretsen L, Nordsletten L (2018)
Care pathways for patients with musculoskeletal disorders?
Tidsskr Nor Laegeforen, 138 (17)
DOI 10.4045/tidsskr.18.0709, PubMed 30378410

Risberg MA, Steffen K, Nilstad A, Myklebust G, Kristianslund E, Moltubakk MM, Krosshaug T (2018)
Normative Quadriceps and Hamstring Muscle Strength Values for Female, Healthy, Elite Handball and Football Players
J Strength Cond Res, 32 (8), 2314-2323
DOI 10.1519/JSC.0000000000002579, PubMed 29794892

Aga C, Risberg MA, Fagerland MW, Johansen S, Trøan I, Heir S, Engebretsen L (2018)
No Difference in the KOOS Quality of Life Subscore Between Anatomic Double-Bundle and Anatomic Single-Bundle Anterior Cruciate Ligament Reconstruction of the Knee: A Prospective Randomized Controlled Trial With 2 Years' Follow-up
Am J Sports Med, 46 (10), 2341-2354
DOI 10.1177/0363546518782454, PubMed 30021073

Holtedahl R, Brox JI, Aune AK, Nguyen D, Risberg MA, Tjomsland O (2018)
Changes in the rate of publicly financed knee arthroscopies: an analysis of data from the Norwegian patient registry from 2012 to 2016
BMJ Open, 8 (6), e021199
DOI 10.1136/bmjopen-2017-021199, PubMed 29909370

Grindem H, Wellsandt E, Failla M, Snyder-Mackler L, Risberg MA (2018)
Anterior Cruciate Ligament Injury-Who Succeeds Without Reconstructive Surgery? The Delaware-Oslo ACL Cohort Study
Orthop J Sports Med, 6 (5), 2325967118774255
DOI 10.1177/2325967118774255, PubMed 29854860

Risberg MA, Ageberg E, Nilstad A, Lund B, Nordsletten L, Løken S, Ludvigsen T, Kierkegaard S, Carsen S, Kostogiannis I, Crossley KM, Glyn-Jones S, Kemp JL (2018)
Arthroscopic Surgical Procedures Versus Sham Surgery for Patients With Femoroacetabular Impingement and/or Labral Tears: Study Protocol for a Randomized Controlled Trial (HIPARTI) and a Prospective Cohort Study (HARP)
J Orthop Sports Phys Ther, 48 (4), 325-335
DOI 10.2519/jospt.2018.7931, PubMed 29607761

Heerey J, Risberg MA, Magnus J, Moksnes H, Ødegaard T, Crossley K, Kemp JL (2018)
Impairment-Based Rehabilitation Following Hip Arthroscopy: Postoperative Protocol for the HIP ARThroscopy International Randomized Controlled Trial
J Orthop Sports Phys Ther, 48 (4), 336-342
DOI 10.2519/jospt.2018.8002, PubMed 29607764

Øiestad BE, Holm I, Risberg MA (2018)
Return to pivoting sport after ACL reconstruction: association with osteoarthritis and knee function at the 15-year follow-up
Br J Sports Med, 52 (18), 1199-1204
DOI 10.1136/bjsports-2017-097718, PubMed 29550753

Logerstedt DS, Scalzitti D, Risberg MA, Engebretsen L, Webster KE, Feller J, Snyder-Mackler L, Axe MJ, McDonough CM (2017)
Knee Stability and Movement Coordination Impairments: Knee Ligament Sprain Revision 2017
J Orthop Sports Phys Ther, 47 (11), A1-A47
DOI 10.2519/jospt.2017.0303, PubMed 29089004

Nawasreh Z, Logerstedt D, Cummer K, Axe M, Risberg MA, Snyder-Mackler L (2017)
Functional performance 6 months after ACL reconstruction can predict return to participation in the same preinjury activity level 12 and 24 months after surgery
Br J Sports Med, 52 (6), 375
DOI 10.1136/bjsports-2016-097095, PubMed 28954801

Hare KB, Stefan Lohmander L, Kise NJ, Risberg MA, Roos EM (2017)
Middle-aged patients with an MRI-verified medial meniscal tear report symptoms commonly associated with knee osteoarthritis
Acta Orthop, 88 (6), 664-669
DOI 10.1080/17453674.2017.1360985, PubMed 28787249

Lombnæs GØ, Magnusson K, Østerås N, Nordsletten L, Risberg MA, Hagen KB (2017)
Distribution of osteoarthritis in a Norwegian population-based cohort: associations to risk factor profiles and health-related quality of life
Rheumatol Int, 37 (9), 1541-1550
DOI 10.1007/s00296-017-3721-6, PubMed 28451795

Nawasreh Z, Logerstedt D, Cummer K, Axe MJ, Risberg MA, Snyder-Mackler L (2016)
Do Patients Failing Return-to-Activity Criteria at 6 Months After Anterior Cruciate Ligament Reconstruction Continue Demonstrating Deficits at 2 Years?
Am J Sports Med, 45 (5), 1037-1048
DOI 10.1177/0363546516680619, PubMed 28125899

Kise NJ, Risberg MA, Stensrud S, Ranstam J, Engebretsen L, Roos EM (2016)
Exercise therapy versus arthroscopic partial meniscectomy for degenerative meniscal tear in middle aged patients: randomised controlled trial with two year follow-up
Br J Sports Med, 50 (23), 1473-1480
DOI 10.1136/bjsports-2016-i3740rep, PubMed 30142084

Kemp JL, Risberg MA, Schache AG, Makdissi M, Pritchard MG, Crossley KM (2016)
Patients With Chondrolabral Pathology Have Bilateral Functional Impairments 12 to 24 Months After Unilateral Hip Arthroscopy: A Cross-sectional Study
J Orthop Sports Phys Ther, 46 (11), 947-956
DOI 10.2519/jospt.2016.6577, PubMed 27802796

Eitzen I, Grindem H, Nilstad A, Moksnes H, Risberg MA (2016)
Quantifying Quadriceps Muscle Strength in Patients With ACL Injury, Focal Cartilage Lesions, and Degenerative Meniscus Tears: Differences and Clinical Implications
Orthop J Sports Med, 4 (10), 2325967116667717
DOI 10.1177/2325967116667717, PubMed 27766275

Culvenor AG, Øiestad BE, Holm I, Gunderson RB, Crossley KM, Risberg MA (2016)
Anterior knee pain following anterior cruciate ligament reconstruction does not increase the risk of patellofemoral osteoarthritis at 15- and 20-year follow-ups
Osteoarthritis Cartilage, 25 (1), 30-33
DOI 10.1016/j.joca.2016.09.012, PubMed 27693503

Kise NJ, Risberg MA, Stensrud S, Ranstam J, Engebretsen L, Roos EM (2016)
Exercise therapy versus arthroscopic partial meniscectomy for degenerative meniscal tear in middle aged patients: randomised controlled trial with two year follow-up
BMJ, 354, i3740
DOI 10.1136/bmj.i3740, PubMed 27440192

Failla MJ, Logerstedt DS, Grindem H, Axe MJ, Risberg MA, Engebretsen L, Huston LJ, Spindler KP, Snyder-Mackler L (2016)
Does Extended Preoperative Rehabilitation Influence Outcomes 2 Years After ACL Reconstruction? A Comparative Effectiveness Study Between the MOON and Delaware-Oslo ACL Cohorts
Am J Sports Med, 44 (10), 2608-2614
DOI 10.1177/0363546516652594, PubMed 27416993

Grindem H, Snyder-Mackler L, Moksnes H, Engebretsen L, Risberg MA (2016)
Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: the Delaware-Oslo ACL cohort study
Br J Sports Med, 50 (13), 804-8
DOI 10.1136/bjsports-2016-096031, PubMed 27162233

Risberg MA, Oiestad BE, Gunderson R, Aune AK, Engebretsen L, Culvenor A, Holm I (2016)
Changes in Knee Osteoarthritis, Symptoms, and Function After Anterior Cruciate Ligament Reconstruction: A 20-Year Prospective Follow-up Study
Am J Sports Med, 44 (5), 1215-24
DOI 10.1177/0363546515626539, PubMed 26912282

Årøen A, Brøgger H, Røtterud JH, Sivertsen EA, Engebretsen L, Risberg MA (2016)
Evaluation of focal cartilage lesions of the knee using MRI T2 mapping and delayed Gadolinium Enhanced MRI of Cartilage (dGEMRIC)
BMC Musculoskelet Disord, 17, 73
DOI 10.1186/s12891-016-0941-y, PubMed 26868015

Svege I, Fernandes L, Nordsletten L, Holm I, Risberg MA (2015)
Long-Term Effect of Exercise Therapy and Patient Education on Impairments and Activity Limitations in People With Hip Osteoarthritis: Secondary Outcome Analysis of a Randomized Clinical Trial
Phys Ther, 96 (6), 818-27
DOI 10.2522/ptj.20140520, PubMed 26678445

Hakestad KA, Torstveit MK, Nordsletten L, Risberg MA (2015)
Effect of exercises with weight vests and a patient education programme for women with osteopenia and a healed wrist fracture: a randomized, controlled trial of the OsteoACTIVE programme
BMC Musculoskelet Disord, 16, 352
DOI 10.1186/s12891-015-0811-z, PubMed 26578370

Johnsen MB, Eitzen I, Moksnes H, Risberg MA (2015)
Inter- and intrarater reliability of four single-legged hop tests and isokinetic muscle torque measurements in children
Knee Surg Sports Traumatol Arthrosc, 23 (7), 1907-16
DOI 10.1007/s00167-013-2771-x, PubMed 26284271

Stensrud S, Risberg MA, Roos EM (2015)
Effect of exercise therapy compared with arthroscopic surgery on knee muscle strength and functional performance in middle-aged patients with degenerative meniscus tears: a 3-mo follow-up of a randomized controlled trial
Am J Phys Med Rehabil, 94 (6), 460-73
DOI 10.1097/PHM.0000000000000209, PubMed 25299520

Eitzen I, Fernandes L, Kallerud H, Nordsletten L, Knarr B, Risberg MA (2015)
Gait Characteristics, Symptoms, and Function in Persons With Hip Osteoarthritis: A Longitudinal Study With 6 to 7 Years of Follow-up
J Orthop Sports Phys Ther, 45 (7), 539-49
DOI 10.2519/jospt.2015.5441, PubMed 25996360

Eitzen I, Fernandes L, Nordsletten L, Risberg MA (2015)
No effects of a 12-week supervised exercise therapy program on gait in patients with mild to moderate osteoarthritis: a secondary analysis of a randomized trial
J Negat Results Biomed, 14, 5
DOI 10.1186/s12952-015-0023-y, PubMed 25886499

Hakestad KA, Torstveit MK, Nordsletten L, Axelsson ÅC, Risberg MA (2015)
Exercises including weight vests and a patient education program for women with osteopenia: a feasibility study of the OsteoACTIVE rehabilitation program
J Orthop Sports Phys Ther, 45 (2), 97-105, C1-4
DOI 10.2519/jospt.2015.4842, PubMed 25579693

Wondrasch B, Risberg MA, Zak L, Marlovits S, Aldrian S (2014)
Effect of accelerated weightbearing after matrix-associated autologous chondrocyte implantation on the femoral condyle: a prospective, randomized controlled study presenting MRI-based and clinical outcomes after 5 years
Am J Sports Med, 43 (1), 146-53
DOI 10.1177/0363546514554910, PubMed 25378208

Grindem H, Granan LP, Risberg MA, Engebretsen L, Snyder-Mackler L, Eitzen I (2014)
How does a combined preoperative and postoperative rehabilitation programme influence the outcome of ACL reconstruction 2 years after surgery? A comparison between patients in the Delaware-Oslo ACL Cohort and the Norwegian National Knee Ligament Registry
Br J Sports Med, 49 (6), 385-9
DOI 10.1136/bjsports-2014-093891, PubMed 25351782

Logerstedt D, Di Stasi S, Grindem H, Lynch A, Eitzen I, Engebretsen L, Risberg MA, Axe MJ, Snyder-Mackler L (2014)
Self-reported knee function can identify athletes who fail return-to-activity criteria up to 1 year after anterior cruciate ligament reconstruction: a delaware-oslo ACL cohort study
J Orthop Sports Phys Ther, 44 (12), 914-23
DOI 10.2519/jospt.2014.4852, PubMed 25347228

Grindem H, Eitzen I, Engebretsen L, Snyder-Mackler L, Risberg MA (2014)
Nonsurgical or Surgical Treatment of ACL Injuries: Knee Function, Sports Participation, and Knee Reinjury: The Delaware-Oslo ACL Cohort Study
J Bone Joint Surg Am, 96 (15), 1233-1241
DOI 10.2106/JBJS.M.01054, PubMed 25100769

Hakestad KA, Nordsletten L, Torstveit MK, Risberg MA (2014)
Postmenopausal women with osteopenia and a healed wrist fracture have reduced physical function and quality of life compared to a matched, healthy control group with no fracture
BMC Womens Health, 14, 92
DOI 10.1186/1472-6874-14-92, PubMed 25086601

Culvenor AG, Engen CN, Øiestad BE, Engebretsen L, Risberg MA (2014)
Defining the presence of radiographic knee osteoarthritis: a comparison between the Kellgren and Lawrence system and OARSI atlas criteria
Knee Surg Sports Traumatol Arthrosc, 23 (12), 3532-9
DOI 10.1007/s00167-014-3205-0, PubMed 25079135

Røtterud JH, Reinholt FP, Beckstrøm KJ, Risberg MA, Arøen A (2014)
Relationship between CTX-II and patient characteristics, patient-reported outcome, muscle strength, and rehabilitation in patients with a focal cartilage lesion of the knee: a prospective exploratory cohort study of 48 patients
BMC Musculoskelet Disord, 15, 99
DOI 10.1186/1471-2474-15-99, PubMed 24661577

Sagen A, Kaaresen R, Sandvik L, Thune I, Risberg MA (2014)
Upper limb physical function and adverse effects after breast cancer surgery: a prospective 2.5-year follow-up study and preoperative measures
Arch Phys Med Rehabil, 95 (5), 875-81
DOI 10.1016/j.apmr.2013.12.015, PubMed 24389401

Svege I, Nordsletten L, Fernandes L, Risberg MA (2013)
Exercise therapy may postpone total hip replacement surgery in patients with hip osteoarthritis: a long-term follow-up of a randomised trial
Ann Rheum Dis, 74 (1), 164-9
DOI 10.1136/annrheumdis-2013-203628, PubMed 24255546

Eitzen I, Fernandes L, Nordsletten L, Snyder-Mackler L, Risberg MA (2013)
Weight-bearing asymmetries during Sit-To-Stand in patients with mild-to-moderate hip osteoarthritis
Gait Posture, 39 (2), 683-8
DOI 10.1016/j.gaitpost.2013.09.010, PubMed 24238750

Øiestad BE, Østerås N, Frobell R, Grotle M, Brøgger H, Risberg MA (2013)
Efficacy of strength and aerobic exercise on patient-reported outcomes and structural changes in patients with knee osteoarthritis: study protocol for a randomized controlled trial
BMC Musculoskelet Disord, 14, 266
DOI 10.1186/1471-2474-14-266, PubMed 24028201

Lynch AD, Logerstedt DS, Grindem H, Eitzen I, Hicks GE, Axe MJ, Engebretsen L, Risberg MA, Snyder-Mackler L (2013)
Consensus criteria for defining 'successful outcome' after ACL injury and reconstruction: a Delaware-Oslo ACL cohort investigation
Br J Sports Med, 49 (5), 335-42
DOI 10.1136/bjsports-2013-092299, PubMed 23881894

Østerås N, Risberg MA, Kvien TK, Engebretsen L, Nordsletten L, Bruusgaard D, Schjervheim UB, Haugen IK, Hammer HB, Provan S, Øiestad BE, Semb AG, Rollefstad S, Hagen KB, Uhlig T, Slatkowsky-Christensen B, Kjeken I, Flugsrud G, Grotle M, Sesseng S, Edvardsen H, Natvig B (2013)
Hand, hip and knee osteoarthritis in a Norwegian population-based study--the MUST protocol
BMC Musculoskelet Disord, 14, 201
DOI 10.1186/1471-2474-14-201, PubMed 23826721

Moksnes H, Engebretsen L, Risberg MA (2013)
Prevalence and incidence of new meniscus and cartilage injuries after a nonoperative treatment algorithm for ACL tears in skeletally immature children: a prospective MRI study
Am J Sports Med, 41 (8), 1771-9
DOI 10.1177/0363546513491092, PubMed 23771955

Grindem H, Eitzen I, Snyder-Mackler L, Risberg MA (2013)
Online registration of monthly sports participation after anterior cruciate ligament injury: a reliability and validity study
Br J Sports Med, 48 (9), 748-53
DOI 10.1136/bjsports-2012-092075, PubMed 23645830

Wondrasch B, Arøen A, Røtterud JH, Høysveen T, Bølstad K, Risberg MA (2013)
The feasibility of a 3-month active rehabilitation program for patients with knee full-thickness articular cartilage lesions: the Oslo Cartilage Active Rehabilitation and Education Study
J Orthop Sports Phys Ther, 43 (5), 310-24
DOI 10.2519/jospt.2013.4354, PubMed 23485794

Moksnes H, Engebretsen L, Eitzen I, Risberg MA (2013)
Functional outcomes following a non-operative treatment algorithm for anterior cruciate ligament injuries in skeletally immature children 12 years and younger. A prospective cohort with 2 years follow-up
Br J Sports Med, 47 (8), 488-94
DOI 10.1136/bjsports-2012-092066, PubMed 23446640

Eitzen I, Fernandes L, Nordsletten L, Risberg MA (2012)
Sagittal plane gait characteristics in hip osteoarthritis patients with mild to moderate symptoms compared to healthy controls: a cross-sectional study
BMC Musculoskelet Disord, 13, 258
DOI 10.1186/1471-2474-13-258, PubMed 23256709

Stensrud S, Risberg MA, Roos EM (2012)
Knee function and knee muscle strength in middle-aged patients with degenerative meniscal tears eligible for arthroscopic partial meniscectomy
Br J Sports Med, 48 (9), 784-8
DOI 10.1136/bjsports-2012-091540, PubMed 23242961

Holm I, Oiestad BE, Risberg MA, Gunderson R, Aune AK (2012)
No differences in prevalence of osteoarthritis or function after open versus endoscopic technique for anterior cruciate ligament reconstruction: 12-year follow-up report of a randomized controlled trial
Am J Sports Med, 40 (11), 2492-8
DOI 10.1177/0363546512458766, PubMed 22984128

Grindem H, Eitzen I, Moksnes H, Snyder-Mackler L, Risberg MA (2012)
A pair-matched comparison of return to pivoting sports at 1 year in anterior cruciate ligament-injured patients after a nonoperative versus an operative treatment course
Am J Sports Med, 40 (11), 2509-16
DOI 10.1177/0363546512458424, PubMed 22962290

Stensrud S, Roos EM, Risberg MA (2012)
A 12-week exercise therapy program in middle-aged patients with degenerative meniscus tears: a case series with 1-year follow-up
J Orthop Sports Phys Ther, 42 (11), 919-31
DOI 10.2519/jospt.2012.4165, PubMed 22960783

Logerstedt D, Grindem H, Lynch A, Eitzen I, Engebretsen L, Risberg MA, Axe MJ, Snyder-Mackler L (2012)
Single-legged hop tests as predictors of self-reported knee function after anterior cruciate ligament reconstruction: the Delaware-Oslo ACL cohort study
Am J Sports Med, 40 (10), 2348-56
DOI 10.1177/0363546512457551, PubMed 22926749

Øiestad BE, Holm I, Engebretsen L, Aune AK, Gunderson R, Risberg MA (2012)
The prevalence of patellofemoral osteoarthritis 12 years after anterior cruciate ligament reconstruction
Knee Surg Sports Traumatol Arthrosc, 21 (4), 942-9
DOI 10.1007/s00167-012-2161-9, PubMed 22898911

Svege I, Kolle E, Risberg MA (2012)
Reliability and validity of the Physical Activity Scale for the Elderly (PASE) in patients with hip osteoarthritis
BMC Musculoskelet Disord, 13, 26
DOI 10.1186/1471-2474-13-26, PubMed 22353558

Eitzen I, Hakestad KA, Risberg MA (2012)
Inter- and intrarater reliability of isokinetic thigh muscle strength tests in postmenopausal women with osteopenia
Arch Phys Med Rehabil, 93 (3), 420-7
DOI 10.1016/j.apmr.2011.10.001, PubMed 22265342

Hoksrud A, Torgalsen T, Harstad H, Haugen S, Andersen TE, Risberg MA, Bahr R (2012)
Ultrasound-guided sclerosis of neovessels in patellar tendinopathy: a prospective study of 101 patients
Am J Sports Med, 40 (3), 542-7
DOI 10.1177/0363546511433012, PubMed 22238058

Røtterud JH, Risberg MA, Engebretsen L, Årøen A (2011)
Patients with focal full-thickness cartilage lesions benefit less from ACL reconstruction at 2-5 years follow-up
Knee Surg Sports Traumatol Arthrosc, 20 (8), 1533-9
DOI 10.1007/s00167-011-1739-y, PubMed 22065293

Thomeé R, Kaplan Y, Kvist J, Myklebust G, Risberg MA, Theisen D, Tsepis E, Werner S, Wondrasch B, Witvrouw E (2011)
Muscle strength and hop performance criteria prior to return to sports after ACL reconstruction
Knee Surg Sports Traumatol Arthrosc, 19 (11), 1798-805
DOI 10.1007/s00167-011-1669-8, PubMed 21932078

Moksnes H, Engebretsen L, Risberg MA (2011)
Management of anterior cruciate ligament injuries in skeletally immature individuals
J Orthop Sports Phys Ther, 42 (3), 172-83
DOI 10.2519/jospt.2012.3608, PubMed 21891880

Grindem H, Logerstedt D, Eitzen I, Moksnes H, Axe MJ, Snyder-Mackler L, Engebretsen L, Risberg MA (2011)
Single-legged hop tests as predictors of self-reported knee function in nonoperatively treated individuals with anterior cruciate ligament injury
Am J Sports Med, 39 (11), 2347-54
DOI 10.1177/0363546511417085, PubMed 21828364

Eitzen I, Moksnes H, Snyder-Mackler L, Risberg MA (2010)
A progressive 5-week exercise therapy program leads to significant improvement in knee function early after anterior cruciate ligament injury
J Orthop Sports Phys Ther, 40 (11), 705-21
DOI 10.2519/jospt.2010.3345, PubMed 20710097

Rydevik K, Fernandes L, Nordsletten L, Risberg MA (2010)
Functioning and disability in patients with hip osteoarthritis with mild to moderate pain
J Orthop Sports Phys Ther, 40 (10), 616-24
DOI 10.2519/jospt.2010.3346, PubMed 20811166

Oiestad BE, Holm I, Aune AK, Gunderson R, Myklebust G, Engebretsen L, Fosdahl MA, Risberg MA (2010)
Knee function and prevalence of knee osteoarthritis after anterior cruciate ligament reconstruction: a prospective study with 10 to 15 years of follow-up
Am J Sports Med, 38 (11), 2201-10
DOI 10.1177/0363546510373876, PubMed 20713644

Nilsson BB, Westheim A, Risberg MA, Arnesen H, Seljeflot I (2010)
No effect of group-based aerobic interval training on N-terminal pro- B-type natriuretic peptide levels in patients with chronic heart failure
Scand Cardiovasc J, 44 (4), 223-9
DOI 10.3109/14017431.2010.496869, PubMed 20636229

Øiestad BE, Holm I, Gunderson R, Myklebust G, Risberg MA (2010)
Quadriceps muscle weakness after anterior cruciate ligament reconstruction: a risk factor for knee osteoarthritis?
Arthritis Care Res (Hoboken), 62 (12), 1706-14
DOI 10.1002/acr.20299, PubMed 20662041

Oiestad BE, Holm I, Engebretsen L, Risberg MA (2010)
The association between radiographic knee osteoarthritis and knee symptoms, function and quality of life 10-15 years after anterior cruciate ligament reconstruction
Br J Sports Med, 45 (7), 583-8
DOI 10.1136/bjsm.2010.073130, PubMed 20647299

Fernandes L, Storheim K, Sandvik L, Nordsletten L, Risberg MA (2010)
Efficacy of patient education and supervised exercise vs patient education alone in patients with hip osteoarthritis: a single blind randomized clinical trial
Osteoarthritis Cartilage, 18 (10), 1237-43
DOI 10.1016/j.joca.2010.05.015, PubMed 20633669

Eitzen I, Moksnes H, Snyder-Mackler L, Engebretsen L, Risberg MA (2010)
Functional tests should be accentuated more in the decision for ACL reconstruction
Knee Surg Sports Traumatol Arthrosc, 18 (11), 1517-25
DOI 10.1007/s00167-010-1113-5, PubMed 20411377

Fernandes L, Storheim K, Nordsletten L, Risberg MA (2010)
Development of a therapeutic exercise program for patients with osteoarthritis of the hip
Phys Ther, 90 (4), 592-601
DOI 10.2522/ptj.20090083, PubMed 20185613

Eitzen I, Eitzen TJ, Holm I, Snyder-Mackler L, Risberg MA (2010)
Anterior cruciate ligament-deficient potential copers and noncopers reveal different isokinetic quadriceps strength profiles in the early stage after injury
Am J Sports Med, 38 (3), 586-93
DOI 10.1177/0363546509349492, PubMed 20110458

Holm I, Oiestad BE, Risberg MA, Aune AK (2010)
No difference in knee function or prevalence of osteoarthritis after reconstruction of the anterior cruciate ligament with 4-strand hamstring autograft versus patellar tendon-bone autograft: a randomized study with 10-year follow-up
Am J Sports Med, 38 (3), 448-54
DOI 10.1177/0363546509350301, PubMed 20097928

LaPrade RF, Johansen S, Agel J, Risberg MA, Moksnes H, Engebretsen L (2010)
Outcomes of an anatomic posterolateral knee reconstruction
J Bone Joint Surg Am, 92 (1), 16-22
DOI 10.2106/JBJS.I.00474, PubMed 20048091

Hjermundrud V, Bjune TK, Risberg MA, Engebretsen L, Arøen A (2009)
Full-thickness cartilage lesion do not affect knee function in patients with ACL injury
Knee Surg Sports Traumatol Arthrosc, 18 (3), 298-303
DOI 10.1007/s00167-009-0894-x, PubMed 19760401

Engebretsen L, Risberg MA, Robertson B, Ludvigsen TC, Johansen S (2009)
Outcome after knee dislocations: a 2-9 years follow-up of 85 consecutive patients
Knee Surg Sports Traumatol Arthrosc, 17 (9), 1013-26
DOI 10.1007/s00167-009-0869-y, PubMed 19609504

Risberg MA, Holm I (2009)
The long-term effect of 2 postoperative rehabilitation programs after anterior cruciate ligament reconstruction: a randomized controlled clinical trial with 2 years of follow-up
Am J Sports Med, 37 (10), 1958-66
DOI 10.1177/0363546509335196, PubMed 19556470

Moksnes H, Risberg MA (2009)
Performance-based functional evaluation of non-operative and operative treatment after anterior cruciate ligament injury
Scand J Med Sci Sports, 19 (3), 345-55
DOI 10.1111/j.1600-0838.2008.00816.x, PubMed 18510592

Sagen A, Kåresen R, Skaane P, Risberg MA (2009)
Validity for the simplified water displacement instrument to measure arm lymphedema as a result of breast cancer surgery
Arch Phys Med Rehabil, 90 (5), 803-9
DOI 10.1016/j.apmr.2008.11.016, PubMed 19406300

Risberg MA, Moksnes H, Storevold A, Holm I, Snyder-Mackler L (2009)
Rehabilitation after anterior cruciate ligament injury influences joint loading during walking but not hopping
Br J Sports Med, 43 (6), 423-8
DOI 10.1136/bjsm.2008.056846, PubMed 19273473

Eitzen I, Holm I, Risberg MA (2009)
Preoperative quadriceps strength is a significant predictor of knee function two years after anterior cruciate ligament reconstruction
Br J Sports Med, 43 (5), 371-6
DOI 10.1136/bjsm.2008.057059, PubMed 19224907

Sagen A, Kåresen R, Risberg MA (2009)
Physical activity for the affected limb and arm lymphedema after breast cancer surgery. A prospective, randomized controlled trial with two years follow-up
Acta Oncol, 48 (8), 1102-10
DOI 10.3109/02841860903061683, PubMed 19863217

Sagen A, Kåresen R, Sandvik L, Risberg MA (2009)
Changes in arm morbidities and health-related quality of life after breast cancer surgery - a five-year follow-up study
Acta Oncol, 48 (8), 1111-8
DOI 10.3109/02841860903061691, PubMed 19863218

Moksnes H, Snyder-Mackler L, Risberg MA (2008)
Individuals with an anterior cruciate ligament-deficient knee classified as noncopers may be candidates for nonsurgical rehabilitation
J Orthop Sports Phys Ther, 38 (10), 586-95
DOI 10.2519/jospt.2008.2750, PubMed 18979658

Nilsson BB, Westheim A, Risberg MA (2008)
Effects of group-based high-intensity aerobic interval training in patients with chronic heart failure
Am J Cardiol, 102 (10), 1361-5
DOI 10.1016/j.amjcard.2008.07.016, PubMed 18993156

Nilsson BB, Westheim A, Risberg MA (2008)
Long-term effects of a group-based high-intensity aerobic interval-training program in patients with chronic heart failure
Am J Cardiol, 102 (9), 1220-4
DOI 10.1016/j.amjcard.2008.06.046, PubMed 18940296

Nilsson BB, Hellesnes B, Westheim A, Risberg MA (2008)
Group-based aerobic interval training in patients with chronic heart failure: Norwegian Ullevaal Model
Phys Ther, 88 (4), 523-35
DOI 10.2522/ptj.20060374, PubMed 18258768

Moksnes H, Engebretsen L, Risberg MA (2007)
Performance-based functional outcome for children 12 years or younger following anterior cruciate ligament injury: a two to nine-year follow-up study
Knee Surg Sports Traumatol Arthrosc, 16 (3), 214-23
DOI 10.1007/s00167-007-0469-7, PubMed 18157486

Risberg MA, Holm I, Myklebust G, Engebretsen L (2007)
Neuromuscular training versus strength training during first 6 months after anterior cruciate ligament reconstruction: a randomized clinical trial
Phys Ther, 87 (6), 737-50
DOI 10.2522/ptj.20060041, PubMed 17442840

Sagen A, Kåresen R, Risberg MA (2005)
The reliability of a simplified water displacement instrument: a method for measuring arm volume
Arch Phys Med Rehabil, 86 (1), 86-9
DOI 10.1016/j.apmr.2003.12.042, PubMed 15640996

Holm I, Fosdahl MA, Friis A, Risberg MA, Myklebust G, Steen H (2004)
Effect of neuromuscular training on proprioception, balance, muscle strength, and lower limb function in female team handball players
Clin J Sport Med, 14 (2), 88-94
DOI 10.1097/00042752-200403000-00006, PubMed 15014342

Beynnon BD, Good L, Risberg MA (2002)
The effect of bracing on proprioception of knees with anterior cruciate ligament injury
J Orthop Sports Phys Ther, 32 (1), 11-5
DOI 10.2519/jospt.2002.32.1.11, PubMed 11787904

Uh BS, Beynnon BD, Churchill DL, Haugh LD, Risberg MA, Fleming BC (2001)
A new device to measure knee laxity during weightbearing and non-weightbearing conditions
J Orthop Res, 19 (6), 1185-91
DOI 10.1016/S0736-0266(01)00055-9, PubMed 11781022

Risberg MA, Mørk M, Jenssen HK, Holm I (2001)
Design and implementation of a neuromuscular training program following anterior cruciate ligament reconstruction
J Orthop Sports Phys Ther, 31 (11), 620-31
DOI 10.2519/jospt.2001.31.11.620, PubMed 11720295

Aune AK, Holm I, Risberg MA, Jensen HK, Steen H (2001)
Four-strand hamstring tendon autograft compared with patellar tendon-bone autograft for anterior cruciate ligament reconstruction. A randomized study with two-year follow-up
Am J Sports Med, 29 (6), 722-8
DOI 10.1177/03635465010290060901, PubMed 11734484

Risberg MA, Holm I, Tjomsland O, Ljunggren E, Ekeland A (1999)
Prospective study of changes in impairments and disabilities after anterior cruciate ligament reconstruction
J Orthop Sports Phys Ther, 29 (7), 400-12
DOI 10.2519/jospt.1999.29.7.400, PubMed 10416180

Risberg MA, Beynnon BD, Peura GD, Uh BS (1999)
Proprioception after anterior cruciate ligament reconstruction with and without bracing
Knee Surg Sports Traumatol Arthrosc, 7 (5), 303-9
DOI 10.1007/s001670050168, PubMed 10525700

Risberg MA, Holm I, Steen H, Eriksson J, Ekeland A (1999)
The effect of knee bracing after anterior cruciate ligament reconstruction. A prospective, randomized study with two years' follow-up
Am J Sports Med, 27 (1), 76-83
DOI 10.1177/03635465990270012101, PubMed 9934423

Risberg MA, Holm I, Steen H, Beynnon BD (1999)
Sensitivity to changes over time for the IKDC form, the Lysholm score, and the Cincinnati knee score. A prospective study of 120 ACL reconstructed patients with a 2-year follow-up
Knee Surg Sports Traumatol Arthrosc, 7 (3), 152-9
DOI 10.1007/s001670050140, PubMed 10401651

Beynnon BD, Risberg MA, Tjomsland O, Ekeland A, Fleming BC, Peura GD, Johnson RJ (1997)
Evaluation of knee joint laxity and the structural properties of the anterior cruciate ligament graft in the human. A case report
Am J Sports Med, 25 (2), 203-6
DOI 10.1177/036354659702500211, PubMed 9079174

Risberg MA, Holm I, Ekeland A (1995)
Reliability of functional knee tests in normal athletes
Scand J Med Sci Sports, 5 (1), 24-8
DOI 10.1111/j.1600-0838.1995.tb00006.x, PubMed 7882124

Risberg MA, Ekeland A (1994)
Assessment of functional tests after anterior cruciate ligament surgery
J Orthop Sports Phys Ther, 19 (4), 212-7
DOI 10.2519/jospt.1994.19.4.212, PubMed 8173569

Review articles

Lien-Iversen T, Morgan DB, Jensen C, Risberg MA, Engebretsen L, Viberg B (2019)
Does surgery reduce knee osteoarthritis, meniscal injury and subsequent complications compared with non-surgery after ACL rupture with at least 10 years follow-up? A systematic review and meta-analysis
Br J Sports Med (in press)
DOI 10.1136/bjsports-2019-100765, PubMed 31732650

Lie MM, Risberg MA, Storheim K, Engebretsen L, Øiestad BE (2019)
What's the rate of knee osteoarthritis 10 years after anterior cruciate ligament injury? An updated systematic review
Br J Sports Med, 53 (18), 1162-1167
DOI 10.1136/bjsports-2018-099751, PubMed 30936063

Freke MD, Kemp J, Svege I, Risberg MA, Semciw A, Crossley KM (2016)
Physical impairments in symptomatic femoroacetabular impingement: a systematic review of the evidence
Br J Sports Med, 50 (19), 1180
DOI 10.1136/bjsports-2016-096152, PubMed 27301577

Fitzgerald GK, Hinman RS, Zeni J, Risberg MA, Snyder-Mackler L, Bennell KL (2015)
OARSI Clinical Trials Recommendations: Design and conduct of clinical trials of rehabilitation interventions for osteoarthritis
Osteoarthritis Cartilage, 23 (5), 803-14
DOI 10.1016/j.joca.2015.03.013, PubMed 25952351

Moksnes H, Engebretsen L, Risberg MA (2012)
The current evidence for treatment of ACL injuries in children is low: a systematic review
J Bone Joint Surg Am, 94 (12), 1112-9
DOI 10.2106/JBJS.K.00960, PubMed 22717830

Storheim K, Gjersing L, Bølstad K, Risberg MA (2010)
[Extracorporeal shock wave therapy (ESWT) and radial extracorporeal shock wave therapy (rESWT) in chronic musculoskeletal pain]
Tidsskr Nor Laegeforen, 130 (23), 2360-4
DOI 10.4045/tidsskr.09.0654, PubMed 21139662

Flugsrud GB, Nordsletten L, Reinholt FP, Risberg MA, Rydevik K, Uhlig T (2010)
[Osteoarthritis]
Tidsskr Nor Laegeforen, 130 (21), 2136-40
DOI 10.4045/tidsskr.09.1054, PubMed 21052117

Øiestad BE, Engebretsen L, Storheim K, Risberg MA (2009)
Knee osteoarthritis after anterior cruciate ligament injury: a systematic review
Am J Sports Med, 37 (7), 1434-43
DOI 10.1177/0363546509338827, PubMed 19567666

Lewek MD, Chmielewski TL, Risberg MA, Snyder-Mackler L (2003)
Dynamic knee stability after anterior cruciate ligament rupture
Exerc Sport Sci Rev, 31 (4), 195-200
DOI 10.1097/00003677-200310000-00007, PubMed 14571959