CIRRO

Stephan M. Röhrl

Head of CIRRO; Professor, MD
+47 22 22 09 87

Stephan Maximillian Röhrl is a consultant at the Department of Orthopaedic Surgery at Oslo University Hospital Ullevål. Stephan is a specialist in general surgery and orthopaedic surgery and his clinical practice is focusing on reconstructive surgery of the hip and the knee. During his basic orthopaedic training in Umeå, Sweden, he started to work with radiostereometry and DEXA. After his PhD thesis on "wear and fixation of the acetabular component" in 2004 he was research fellow in 2005 at the University of Western Australia in Perth and came to Oslo in 2006. Since, he is leading CIRRO and focusing on research of joints with and without implants. In 2009 he became head of the Norwegian Society for Hip and Knee Surgery.
Stephan is a former German and European cup champion in Judo and has served as physician for the national judo team in Sweden and Norway.

Projects:

Unipolar or bipolar hemiarthroplasty for the treatment of displaced femoral neck fractures.  A prospective randomised controlled trial of RSA (Radiostereometric Analyses) measurements of acetabular wear.
Bone remodeling and migration after insertion of femoral stems with differen surface coatings. Clinical and experimental studies
Wear and different materials in hip arthroplasty
Reverse hybrid total hip replacement: Wear, fixation and bone remodelling
THR in patients under 20 years
Learning curve, muscle sparing approach in primary total hip replacement
A new method to measure ligament balancing . How balanced are total knee arthroplasties?
Patellar resurfacing in total knee arthroplasty. A prospective, randomised and double blind study.
Custom positioning guides technique versus conventional technique in knee arthroplasty
Can the combination of information from different alignment axis improve rotational alignment of the femoral component in total knee arthroplasty?
Computer navigation and conventional technique in total knee replacement
Sacroiliac Joint Fusion in Patients with Severe Pelvic Girdle Pain after Pregnancy and Trauma

CV:

Present position	Consultant surgeon at the department of trauma and orthopaedics, Oslo University Hospital, Oslo, Norway Head of CIRRO: Center for Implant and Radiostereometric Research Oslo, Norway Head of the Norwegian Society for Hip and Knee Surgery (NSHKS)
Personal information	Place of birth: Regensburg, Germany Date of birth: 03.02.1966 Nationality: German Civil status: married, 2 children Address: Agathe Grøndahlsgate 46, 0478 Oslo, Norway Telephone: +47 94424677 Email: s.m.rohrl@medisin.uio.no
Education	1972-1986 Goethe Gymnasium Regensburg, Germany 1983-1984 Cottage Grove high school USA 1986-1987 Military service Germany 1987-1994 Medical school Ludwig Maximilian Universität, München, Germany
Research Qualifications	1996 Ph.D, Ludwig Maximilian University Germany 2003 Licentiat, Umeå University Sweden 2004 Ph.D, Umeå University Sweden 2005 Research fellow, University of WA, Perth Australia 2007 Head of CIRRO (Implant RSA research) Norway
Medical Qualifications	1994 M.D. Ludwig Maximilian University Munich, Germany 1997 Specialist in Sports medicine Germany 1998 Chiropractor Germany 2003 Orthopaedic consultant Sweden
Professional experience	1995-1997 Postgrad. internship , University Regensburg, Germany 1997-2002 Speciality training in orthopaedic surgery University hospital of Northern Sweden, Sweden Consultant positions 2003-2004 University of Northern Sweden, Umeå Sweden 2005 Fremantle University hospital WA Australia 2006 - now Oslo University hospital, Ullevål Oslo, Norway
Teaching	2000-2004 Clinical student courses at Umeå university, Sweden 2005 Courses for students at the university of WA, Australia
International reviewer	Acta Scandinavica Journal of Orthopaedic Research Journal of Biomechanics European Journal for Rehabilitation Medicine Clinical Orthopaedics and Related Research
Honours	1998-2001 Team doctor for premiar league icehockey, Sweden 2001 Team doctor for premiar league football, Sweden 2002 Travelling fellowship of the Swedish Orthopaedic Federation 2002-2003 Physician for the National Judo team of Sweden 2005 Postdoc fellowship, Zimmer Scandinavia, Perth, Australia. 2007 Physician for the National Judo team of Norway 2008 Medical, psychological committee, Judo Norway 2009 Head of the Norwegian Society for Hip and Knee Surgery (NSHKS) 2010 Board member of the Norwegian Arthroplasty registry 2012 Member of the European Hip Society

Publications 2024

Alm CE, Karlsten A, Madsen JE, Nordsletten L, Brattgjerd JE, Pripp AH, Frihagen F, Röhrl SM (2024)
No benefit of the trochanteric stabilizing plate on loss of fracture reduction in AO/OTA 31-A2 trochanteric fractures
Bone Jt Open, 5 (1), 37-45
DOI 10.1302/2633-1462.51.BJO-2023-0082.R1, PubMed 38240179

Kaptein BL, Pijls B, Koster L, Kärrholm J, Hull M, Niesen A, Heesterbeek P, Callary S, Teeter M, Gascoyne T, Röhrl SM, Flivik G, Bragonzoni L, Laende E, Sandberg O, Solomon LB, Nelissen R, Stilling M (2024)
Guideline for RSA and CT-RSA implant migration measurements: an update of standardizations and recommendations
Acta Orthop, 95, 256-267
DOI 10.2340/17453674.2024.40709, PubMed 38819193

Randers E, Kibsgård T, Nogueira LP, Kjensjord T, Röhrl SM, Nordsletten L, Stuge B (2024)
Osseointegration of minimally invasive sacroiliac joint fixation implants-A human retrieval study
J Orthop Res, 42 (8), 1820-1830
DOI 10.1002/jor.25820, PubMed 38433320

Randers EM, Gerdhem P, Stuge B, Diarbakerli E, Nordsletten L, Röhrl SM, Kibsgård TJ (2024)
The effect of minimally invasive sacroiliac joint fusion compared to sham operation: a double-blind randomized placebo-controlled trial
EClinicalMedicine, 68, 102438
DOI 10.1016/j.eclinm.2024.102438, PubMed 38328752

Publications 2023

Engseth LHW, Grønsund J, Aunan E, Brattgjerd JE, Schulz A, Moatshe G, Röhrl SM (2023)
A novel instrument for ligament balancing: a biomechanical study in human cadaveric knees
J Exp Orthop, 10 (1), 83
DOI 10.1186/s40634-023-00643-7, PubMed 37584812

Engseth LHW, Schulz A, Pripp AH, Röhrl SMH, Øhrn FD (2023)
CT-based migration analysis is more precise than radiostereometric analysis for tibial implants: a phantom study on a porcine cadaver
Acta Orthop, 94, 207-214
DOI 10.2340/17453674.2023.12306, PubMed 37114404

Poulsen M, Stødle AH, Nordsletten L, Röhrl SM (2023)
CT-based radiostereometric analysis for assessing midfoot kinematics: precision compared with marker-based radiostereometry
Acta Orthop, 94, 366-372
DOI 10.2340/17453674.2023.16905, PubMed 37493528

Rivrud SCS, Röhrl SM, Van Leeuwen JAMJ (2023)
Effects of patient-specific positioning guides (PSPGs) vs. conventional instrumentation on patient-reported outcome in total knee arthroplasty: secondary analysis of a randomized controlled trial after 5 years
Acta Orthop, 94, 354-359
DOI 10.2340/17453674.2023.15335, PubMed 37493231

Sandberg OH, Kärrholm J, Olivecrona H, Röhrl SM, Sköldenberg OG, Brodén C (2023)
Computed tomography-based radiostereometric analysis in orthopedic research: practical guidelines
Acta Orthop, 94, 373-378
DOI 10.2340/17453674.2023.15337, PubMed 37493579

Øhrn FD, Engseth LHW, Pripp AH, Röhrl SMH, Schulz A (2023)
Dose reduction does not impact the precision of CT-based RSA in tibial implants: a diagnostic accuracy study on precision in a porcine cadaver
Acta Orthop, 94, 550-544
DOI 10.2340/17453674.2023.24022, PubMed 37909103

Publications 2022

Holm-Glad T, Røkkum M, Röhrl SM, Roness S, Godang K, Reigstad O (2022)
A randomized controlled trial comparing two modern total wrist arthroplasties : improved function with stable implants, but high complication rates in non-rheumatoid wrists at two years
Bone Joint J, 104-B (10), 1132-1141
DOI 10.1302/0301-620X.104B10.BJJ-2022-0201.R2, PubMed 36177637

Poulsen M, Stødle AH, Nordsletten L, Röhrl SM (2022)
Does temporary bridge plate fixation preserve joint motion after an unstable Lisfranc injury?
Foot Ankle Surg, 29 (2), 151-157
DOI 10.1016/j.fas.2022.12.007, PubMed 36529589

Rehman Y, Koster LA, Röhrl SM, Aamodt A (2022)
Comparison of the in-vivo kinematics of three different knee prosthesis designs during a step-up movement
Clin Biomech (Bristol), 100, 105824
DOI 10.1016/j.clinbiomech.2022.105824, PubMed 36435077

Thoen PS, Lygre SHL, Nordsletten L, Furnes O, Stigum H, Hallan G, Röhrl SM (2022)
Risk factors for revision surgery due to dislocation within 1 year after 111,711 primary total hip arthroplasties from 2005 to 2019: a study from the Norwegian Arthroplasty Register
Acta Orthop, 93, 593-601
DOI 10.2340/17453674.2022.3474, PubMed 35770369

Publications 2021

Fraser AN, Bøe B, Fjalestad T, Madsen JE, Röhrl SM (2021)
Stable glenoid component of reverse total shoulder arthroplasty at 2 years as measured with model-based radiostereometric analysis (RSA)
Acta Orthop, 92 (6), 644-650
DOI 10.1080/17453674.2021.1943932, PubMed 34196600

Leta TH, Gjertsen JE, Dale H, Hallan G, Lygre SHL, Fenstad AM, Dyrhovden GS, Westberg M, Wik TS, Jakobsen RB, Aamodt A, Röhrl SM, Gøthesen ØJ, Lindalen E, Heir S, Ludvigsen J, Bruun T, Hansen AK, Aune KEM, Warholm M, Skjetne JP, Badawy M, Høvding P, Husby OS, Karlsen ØE et al. (2021)
Antibiotic-Loaded Bone Cement in Prevention of Periprosthetic Joint Infections in Primary Total Knee Arthroplasty: A Register-based Multicentre Randomised Controlled Non-inferiority Trial (ALBA trial)
BMJ Open, 11 (1), e041096
DOI 10.1136/bmjopen-2020-041096, PubMed 33509845

Øhrn FD, Lian ØB, Tsukanaka M, Röhrl SM (2021)
Early migration of a medially stabilized total knee arthroplasty : a radiostereometric analysis study up to two years
Bone Jt Open, 2 (9), 737-744
DOI 10.1302/2633-1462.29.BJO-2021-0115.R1, PubMed 34493056

Publications 2020

Halvorsen V, Fenstad AM, Rohrl SM, Engesaeter LB, Nordsletten L, Terjesen T, Furnes O, Hallan G (2020)
Hip disorders in children and adolescents - examination and treatment of sequelae
Tidsskr. Nor. Laegeforen., 140 (17), 1772-1775

Halvorsen V, Fenstad AM, Röhrl SM, Engesæter LB, Nordsletten L, Terjesen T, Furnes O, Hallan G (2020)
[Hip disorders in children and adolescents – assessment and treatment of sequelae]
Tidsskr Nor Laegeforen, 140 (17)
DOI 10.4045/tidsskr.20.0274, PubMed 33231392

Röhrl SM (2020)
"Great balls on fire:" known algorithm with a new instrument?
Acta Orthop, 91 (6), 621-623
DOI 10.1080/17453674.2020.1840029, PubMed 33143497

Thoen PS, Nordsletten L, Pripp AH, Röhrl SM (2020)
Results of a randomized controlled trial with five-year radiostereometric analysis results of vitamin E-infused highly crosslinked versus moderately crosslinked polyethylene in reverse total hip arthroplasty
Bone Joint J, 102-B (12), 1646-1653
DOI 10.1302/0301-620X.102B12.BJJ-2020-0721.R1, PubMed 33249906

Øhrn FD, Gøthesen Ø, Låstad Lygre SH, Peng Y, Lian ØB, Lewis PL, Furnes O, Röhrl SM (2020)
Decreased Survival of Medial Pivot Designs Compared with Cruciate-retaining Designs in TKA Without Patellar Resurfacing
Clin Orthop Relat Res, 478 (6), 1207-1218
DOI 10.1097/CORR.0000000000001120, PubMed 31977446

Publications 2019

Brun OL, Sund HN, Nordsletten L, Röhrl SM, Mjaaland KE (2019)
Component Placement in Direct Lateral vs Minimally Invasive Anterior Approach in Total Hip Arthroplasty: Radiographic Outcomes From a Prospective Randomized Controlled Trial
J Arthroplasty, 34 (8), 1718-1722
DOI 10.1016/j.arth.2019.04.003, PubMed 31053468

Flatøy B, Dahl J, Röhrl SM, Nordsletten L (2019)
Does radiopaque cement conceal periprosthetic bone loss around femoral stems?
Hip Int, 30 (6), 731-738
DOI 10.1177/1120700019863352, PubMed 31359800

Halvorsen V, Fenstad AM, Engesæter LB, Nordsletten L, Overgaard S, Pedersen AB, Kärrholm J, Mohaddes M, Eskelinen A, Mäkelä KT, Röhrl SM (2019)
Outcome of 881 total hip arthroplasties in 747 patients 21 years or younger: data from the Nordic Arthroplasty Register Association (NARA) 1995-2016
Acta Orthop, 90 (4), 331-337
DOI 10.1080/17453674.2019.1615263, PubMed 31088343

Yang Z, Röhrl SM, Nordsletten L (2019)
Displaced Acetabular Fracture in Elderly Patients: Is Acute Arthroplasty an Effective Option?
Z Orthop Unfall, 157 (6), 676-683
DOI 10.1055/a-0842-2320, PubMed 31071728

Publications 2018

Aunan E, Röhrl SM (2018)
No detrimental effect of ligament balancing on functional outcome after total knee arthroplasty: a prospective cohort study on 129 mechanically aligned knees with 3 years' follow-up
Acta Orthop, 89 (5), 548-554
DOI 10.1080/17453674.2018.1485283, PubMed 29883259

Figved W, Svenøy S, Röhrl SM, Dahl J, Nordsletten L, Frihagen F (2018)
Higher cartilage wear in unipolar than bipolar hemiarthroplasties of the hip at 2 years: A randomized controlled radiostereometric study in 19 fit elderly patients with femoral neck fractures
Acta Orthop, 89 (5), 503-508
DOI 10.1080/17453674.2018.1475899, PubMed 29790397

Fraser AN, Tsukanaka M, Fjalestad T, Madsen JE, Röhrl SM (2018)
Model-based RSA is suitable for clinical trials on the glenoid component of reverse total shoulder arthroplasty
J Orthop Res, 36 (12), 3299-3307
DOI 10.1002/jor.24111, PubMed 30035319

Holm-Glad T, Reigstad O, Tsukanaka M, Røkkum M, Röhrl SM (2018)
High precision and accuracy of model-based RSA for analysis of wrist arthroplasty
J Orthop Res, 36 (11), 3053-3063
DOI 10.1002/jor.24063, PubMed 29873422

Lindalen E, Thoen PS, Nordsletten L, Høvik Ø, Röhrl SM (2018)
Low wear rate at 6-year follow-up of vitamin E-infused cross-linked polyethylene: a randomised trial using 32- and 36-mm heads
Hip Int, 29 (4), 355-362
DOI 10.1177/1120700018798790, PubMed 30227721

Petursson G, Fenstad AM, Gøthesen Ø, Dyrhovden GS, Hallan G, Röhrl SM, Aamodt A, Furnes O (2018)
Computer-Assisted Compared with Conventional Total Knee Replacement: A Multicenter Parallel-Group Randomized Controlled Trial
J Bone Joint Surg Am, 100 (15), 1265-1274
DOI 10.2106/JBJS.17.01338, PubMed 30063588

Øhrn FD, Van Leeuwen J, Tsukanaka M, Röhrl SM (2018)
A 2-year RSA study of the Vanguard CR total knee system: A randomized controlled trial comparing patient-specific positioning guides with conventional technique
Acta Orthop, 89 (4), 418-424
DOI 10.1080/17453674.2018.1470866, PubMed 29739264

Publications 2017

Aunan E, Kibsgård T, Röhrl SM (2017)
Minimal effect of patella eversion on ligament balancing in cruciate-retaining total knee arthroplasty
Arch Orthop Trauma Surg, 137 (3), 387-392
DOI 10.1007/s00402-017-2625-y, PubMed 28168644

Kibsgård TJ, Röhrl SM, Røise O, Sturesson B, Stuge B (2017)
Movement of the sacroiliac joint during the Active Straight Leg Raise test in patients with long-lasting severe sacroiliac joint pain
Clin Biomech (Bristol), 47, 40-45
DOI 10.1016/j.clinbiomech.2017.05.014, PubMed 28582642

Van Leeuwen JAMJ, Snorrason F, Röhrl SM (2017)
No radiological and clinical advantages with patient-specific positioning guides in total knee replacement
Acta Orthop, 89 (1), 89-94
DOI 10.1080/17453674.2017.1393732, PubMed 29161930

Publications 2016

Petursson G, Fenstad AM, Gøthesen Ø, Haugan K, Dyrhovden GS, Hallan G, Röhrl SM, Aamodt A, Nilsson KG, Furnes O (2016)
Similar migration in computer-assisted and conventional total knee arthroplasty
Acta Orthop, 88 (2), 166-172
DOI 10.1080/17453674.2016.1267835, PubMed 27996349

Tsukanaka M, Halvorsen V, Nordsletten L, EngesæTer IØ, EngesæTer LB, Marie Fenstad A, Röhrl SM (2016)
Implant survival and radiographic outcome of total hip replacement in patients less than 20 years old
Acta Orthop, 87 (5), 479-84
DOI 10.1080/17453674.2016.1212180, PubMed 27435903

Tsukanaka M, Støen RØ, Figved W, Frihagen F, Nordsletten L, Röhrl SM (2016)
Steady state acetabular cartilage wear after bipolar hemiarthroplasty: a case series of 10 patients with radiostereometric analysis
Hip Int, 27 (2), 193-197
DOI 10.5301/hipint.5000437, PubMed 27911454

van Leeuwen JAMJ, Röhrl SM (2016)
Patient-specific positioning guides do not consistently achieve the planned implant position in UKA
Knee Surg Sports Traumatol Arthrosc, 25 (3), 752-758
DOI 10.1007/s00167-016-4268-x, PubMed 27520882

Publications 2015

Flatøy B, Rydinge J, Dahl J, Röhrl SM, Nordsletten L (2015)
Low wear, high stability - promises of success in a moderately cross-linked cup?
Hip Int, 25 (3), 199-203
DOI 10.5301/hipint.5000230, PubMed 25952922

Flatøy B, Röhrl SM, Bøe B, Nordsletten L (2015)
No medium-term advantage of electrochemical deposition of hydroxyapatite in cementless femoral stems. 5-year RSA and DXA results from a randomized controlled trial
Acta Orthop, 87 (1), 42-7
DOI 10.3109/17453674.2015.1084768, PubMed 26364953

Flatøy B, Röhrl SM, Rydinge J, Dahl J, Diep LM, Nordsletten L (2015)
Triple taper stem design shows promising fixation and bone remodelling characteristics: radiostereometric analysis in a randomised controlled trial
Bone Joint J, 97-B (6), 755-61
DOI 10.1302/0301-620X.97B6.34736, PubMed 26033054

Lindalen E, Nordsletten L, Høvik Ø, Röhrl SM (2015)
E-vitamin infused highly cross-linked polyethylene: RSA results from a randomised controlled trial using 32 mm and 36 mm ceramic heads
Hip Int, 25 (1), 50-5
DOI 10.5301/hipint.5000195, PubMed 25633755

Otten VT, Crnalic S, Röhrl SM, Nivbrant B, Nilsson KG (2015)
Stability of Uncemented Cups - Long-Term Effect of Screws, Pegs and HA Coating: A 14-Year RSA Follow-Up of Total Hip Arthroplasty
J Arthroplasty, 31 (1), 156-61
DOI 10.1016/j.arth.2015.07.012, PubMed 26260783

Petursson G, Fenstad AM, Havelin LI, Gøthesen Ø, Lygre SH, Röhrl SM, Furnes O (2015)
Better survival of hybrid total knee arthroplasty compared to cemented arthroplasty
Acta Orthop, 86 (6), 714-20
DOI 10.3109/17453674.2015.1073539, PubMed 26179889

Tsukanaka M, Röhrl SM, von Schewelov T, Nordsletten L (2015)
Identification of femoral head center of bipolar hemiarthroplasy in radiostereometric analysis with elementary geometrical shape models
J Biomech, 49 (3), 469-73
DOI 10.1016/j.jbiomech.2015.11.054, PubMed 26705109

Publications 2014

Aunan E, Kibsgård TJ, Diep LM, Röhrl SM (2014)
Intraoperative ligament laxity influences functional outcome 1 year after total knee arthroplasty
Knee Surg Sports Traumatol Arthrosc, 23 (6), 1684-92
DOI 10.1007/s00167-014-3108-0, PubMed 24917538

Kibsgård TJ, Røise O, Sturesson B, Röhrl SM, Stuge B (2014)
Radiosteriometric analysis of movement in the sacroiliac joint during a single-leg stance in patients with long-lasting pelvic girdle pain
Clin Biomech (Bristol), 29 (4), 406-11
DOI 10.1016/j.clinbiomech.2014.02.002, PubMed 24602677

Leeuwen JA, Grøgaard B, Nordsletten L, Röhrl SM (2014)
Comparison of planned and achieved implant position in total knee arthroplasty with patient-specific positioning guides
Acta Orthop, 86 (2), 201-7
DOI 10.3109/17453674.2014.985154, PubMed 25386738

Li Y, Röhrl SM, Bøe B, Nordsletten L (2014)
Comparison of two different Radiostereometric analysis (RSA) systems with markerless elementary geometrical shape modeling for the measurement of stem migration
Clin Biomech (Bristol), 29 (8), 950-5
DOI 10.1016/j.clinbiomech.2014.06.007, PubMed 25175935

Publications 2013

Dahl J, Snorrason F, Nordsletten L, Röhrl SM (2013)
More than 50% reduction of wear in polyethylene liners with alumina heads compared to cobalt-chrome heads in hip replacements: a 10-year follow-up with radiostereometry in 43 hips
Acta Orthop, 84 (4), 360-4
DOI 10.3109/17453674.2013.810516, PubMed 23795579

Publications 2012

Aunan E, Kibsgård T, Clarke-Jenssen J, Röhrl SM (2012)
A new method to measure ligament balancing in total knee arthroplasty: laxity measurements in 100 knees
Arch Orthop Trauma Surg, 132 (8), 1173-81
DOI 10.1007/s00402-012-1536-1, PubMed 22581351

Dahl J, Figved W, Snorrason F, Nordsletten L, Röhrl SM (2012)
Center index method-an alternative for wear measurements with radiostereometry (RSA)
J Orthop Res, 31 (3), 480-4
DOI 10.1002/jor.22241, PubMed 23070723

Kibsgård TJ, Røise O, Stuge B, Röhrl SM (2012)
Precision and accuracy measurement of radiostereometric analysis applied to movement of the sacroiliac joint
Clin Orthop Relat Res, 470 (11), 3187-94
DOI 10.1007/s11999-012-2413-5, PubMed 22695864

Lindalen E, Dahl J, Nordsletten L, Snorrason F, Høvik Ø, Röhrl S (2012)
Reverse hybrid and cemented hip replacement compared using radiostereometry and dual-energy X-ray absorptiometry: 43 hips followed for 2 years in a prospective trial
Acta Orthop, 83 (6), 592-8
DOI 10.3109/17453674.2012.742393, PubMed 23116437

Röhrl SM, Nivbrant B, Nilsson KG (2012)
No adverse effects of submelt-annealed highly crosslinked polyethylene in cemented cups: an RSA study of 8 patients 10 yaers after surgery
Acta Orthop, 83 (2), 148-52
DOI 10.3109/17453674.2011.652889, PubMed 22248172

Söderlund P, Dahl J, Röhrl S, Nivbrant B, Nilsson KG (2012)
10-year results of a new low-monomer cement: follow-up of a randomized RSA study
Acta Orthop, 83 (6), 604-8
DOI 10.3109/17453674.2012.742392, PubMed 23116438

Publications 2011

Dahl J, Söderlund P, Nivbrant B, Nordsletten L, Röhrl SM (2011)
Less wear with aluminium-oxide heads than cobalt-chrome heads with ultra high molecular weight cemented polyethylene cups: a ten-year follow-up with radiostereometry
Int Orthop, 36 (3), 485-90
DOI 10.1007/s00264-011-1334-3, PubMed 21870101

Lindalen E, Havelin LI, Nordsletten L, Dybvik E, Fenstad AM, Hallan G, Furnes O, Høvik O, Röhrl SM (2011)
Is reverse hybrid hip replacement the solution?
Acta Orthop, 82 (6), 639-45
DOI 10.3109/17453674.2011.623569, PubMed 21999624

Lindalen E, Nordsletten L, Röhrl SM (2011)
Segment choice and cup stability influence wear measurements using radiostereometric analysis: a radiostereometric study comparing wear measured by markers in the polyethylene with markers in the periacetabular bone
Clin Biomech (Bristol), 27 (5), 511-4
DOI 10.1016/j.clinbiomech.2011.11.009, PubMed 22197589

Publications 2010

Bøe BG, Röhrl SM, Heier T, Snorrason F, Nordsletten L (2010)
A prospective randomized study comparing electrochemically deposited hydroxyapatite and plasma-sprayed hydroxyapatite on titanium stems
Acta Orthop, 82 (1), 13-9
DOI 10.3109/17453674.2010.548027, PubMed 21189109

Publications 2007

Li MG, Rohrl SM, Wood DJ, Nivbrant B (2007)
Periprosthetic changes in bone mineral density in 5 stem designs 5 years after cemented total hip arthroplasty. No relation to stem migration
J Arthroplasty, 22 (5), 689-91
DOI 10.1016/j.arth.2006.05.035, PubMed 17689776

Röhrl SM, Li MG, Nilsson KG, Nivbrant B (2007)
Very low wear of non-remelted highly cross-linked polyethylene cups: an RSA study lasting up to 6 years
Acta Orthop, 78 (6), 739-45
DOI 10.1080/17453670710014509, PubMed 18236179

Publications 2006

Röhrl SM, Li MG, Pedersen E, Ullmark G, Nivbrant B (2006)
Migration pattern of a short femoral neck preserving stem
Clin Orthop Relat Res, 448, 73-8
DOI 10.1097/01.blo.0000224000.87517.4c, PubMed 16826099

Röhrl SM, Nivbrant B, Snorrason F, Kärrholm J, Nilsson KG (2006)
Porous-coated cups fixed with screws: a 12-year clinical and radiostereometric follow-up study of 50 hips
Acta Orthop, 77 (3), 393-401
DOI 10.1080/17453670610046316, PubMed 16819677

Stoffel K, Booth G, Rohrl SM, Kuster M (2006)
A comparison of conventional versus locking plates in intraarticular calcaneus fractures: a biomechanical study in human cadavers
Clin Biomech (Bristol), 22 (1), 100-5
DOI 10.1016/j.clinbiomech.2006.07.008, PubMed 17007974

Publications 2005

Börlin N, Röhrl SM, Bragdon CR (2005)
RSA wear measurements with or without markers in total hip arthroplasty
J Biomech, 39 (9), 1641-50
DOI 10.1016/j.jbiomech.2005.05.004, PubMed 15990104

Röhrl S, Nivbrant B, Mingguo L, Hewitt B (2005)
In vivo wear and migration of highly cross-linked polyethylene cups a radiostereometry analysis study
J Arthroplasty, 20 (4), 409-13
DOI 10.1016/j.arth.2004.09.040, PubMed 16124954

Publications 2004

Röhrl SM, Nivbrant B, Ström H, Nilsson KG (2004)
Effect of augmented cup fixation on stability, wear, and osteolysis: a 5-year follow-up of total hip arthroplasty with RSA
J Arthroplasty, 19 (8), 962-71
DOI 10.1016/j.arth.2004.06.024, PubMed 15586331

Publications 2003

Digas G, Thanner J, Nivbrant B, Röhrl S, Ström H, Kärrholm J (2003)
Increase in early polyethylene wear after sterilization with ethylene oxide: radiostereometric analyses of 201 total hips
Acta Orthop Scand, 74 (5), 531-41
DOI 10.1080/00016470310017910, PubMed 14620972