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- Katarina Nilsson Helander
Katarina Nilsson Helander
Professor, adjungerad
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Differential contributions of lower leg muscle activation to plantar flexor function during single-leg hopping one year after Achilles tendon rupture: A shift from monoarticular to biarticular muscle
work
Gudni Hardarson, Kari Roland Huseth, Per Aagaard, Roland Zügner, Jon Karlsson, Annelie Brorsson, Katarina Nilsson Helander, Roy Tranberg
JOURNAL OF BIOMECHANICS - 2026 -
Chronic Achilles Tendon
Rupture
Niklas Nilsson, Malin Carling, Michael Carmont, Katarina Nilsson Helander
Sports Injuries Prevention Diagnosis Treatment and Rehabilitation - 2025 -
Achilles Tendinopathy and Insertional
Problems
Elin Larsson, Katarina Nilsson Helander, Niklas Nilsson, Michael Carmont, Annelie Brorsson
Sports Injuries Prevention Diagnosis Treatment and Rehabilitation - 2025 -
Acute Achilles Tendon
Ruptures
Elin Larsson, Niklas Nilsson, Annelie Brorsson, Michael Carmont, Katarina Nilsson Helander
Sports Injuries Prevention Diagnosis Treatment and Rehabilitation - 2025 -
Response to ‘Letter to the Editor concerning ‘The Calf Raise App shows good concurrent validity compared with a linear encoder in measuring total concentric work’: Let us not compare apples to
oranges’
Farshad Ashnai, Jakob Lindskog, Annelie Brorsson, Katarina Nilsson-Helander, Susanne Beischer
Knee Surgery, Sports Traumatology, Arthroscopy - 2025 -
Association between flat variants of the peroneus brevis tendon and split tears on magnetic resonance
imaging
Rafał Zych, Dan Mocanu, Ymer Hagberg, Katarzyna Bokwa Dabrowska, Dawid Dziedzic, Katarina Nilsson Helander, Pawel Szaro
Skeletal Radiology - 2025 -
Interlimb differences in gait kinematics, kinetics, and muscle activation during walking and running one year after acute unilateral Achilles tendon
rupture
Kari Roland Huseth, Gudni Hardarson, Per Aagaard, Annelie Gutke, Roland Zügner, Jon Karlsson, Katarina Nilsson Helander, Elin Larsson, Annelie Brorsson, Roy Tranberg
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH - 2025 -
The description, measurement with inter- and intra-observer reliability of calcaneal tunnel placement for tendon transfer in Achilles tendon
reconstruction
Michael R Carmont, Tor Kristian Andresen, Fraser Morgan, Katarina Nilsson-Helander, Elisabeth Ellingsen Husebye
JOURNAL OF EXPERIMENTAL ORTHOPAEDICS - 2025 -
Comparative analysis of ultrasound and magnetic resonance imaging in diagnosing pain in the posterolateral region of the
ankle
Dan Mocanu, Katarzyna Bokwa-Dabrowska, Katarina Nilsson-Helander, Pawel Szaro
JOURNAL OF ULTRASONOGRAPHY - 2025 -
Diagnostic domains, differential diagnosis and conditions requiring further medical attention that are considered important in the assessment for Achilles tendinopathy: a Delphi consensus
study
Peter Malliaras, Karin Gravare Silbernagel, Robert-Jan de Vos, Jaryd Bourke, Igor Sancho, Shawn L. Hanlon, Anne-Sofie Agergaard, Roald Bahr, Natalia Franco Netto Bittencourt, Marcelo Bordalo, Annelie Brorsson, Victoria Tzortziou Brown, Tanusha Cardoso, Sally Child, Ruth L. Chimenti, Emma Cowley, Pieter D'Hooghe, Wayne Derman, Jonathan T. Finnoff, Siu Ngor Fu, Jill Halstead, Bruce Hamilton, Katarina Nilsson-Helander, Per Holmich, Jonathan Houghton, Alicia M. James, Kornelia Kulig, Amanda Lau, Samuel Ling, Nicola Maffulli, Lorenzo Masci, Sue Mayes, Sean Mc Auliffe, Carol Mccrum, Dylan Morrissey, Shannon E. Munteanu, Myles Calder Murphy, Richard Newsham-West, Seth O'Neill, Nat Padhiar, Theodora Papadopoulou, Jonathan D. Rees, Ebonie Kendra Rio, Diego Ruffino, Alex Scott, Suzy Speirs, Yang Sun, Kristian Thorborg, Larissa Trease, Jan A. N. Verhaar, Evi Wezenbeek, Sue White, Jennifer A. Zellers, S. Zhang, Vasileios Korakakis, Bill Vicenzino
BRITISH JOURNAL OF SPORTS MEDICINE - 2025 -
Fear of reinjury after acute Achilles tendon rupture is related to poorer recovery and lower physical activity
postinjury
Elin Larsson, Agnes Legreves, Annelie Brorsson, Pernilla Eliasson, Christer Johansson, Michael R Carmont, Katarina Nilsson-Helander
JOURNAL OF EXPERIMENTAL ORTHOPAEDICS - 2024 -
Peroneus brevis split rupture is underreported on magnetic resonance imaging of the ankle in patients with chronic lateral ankle
pain
Katarzyna Bokwa-Dabrowska, Dan Mocanu, Alex Alexiev, Katarina Nilsson-Helander, Pawel Szaro
EUROPEAN JOURNAL OF RADIOLOGY OPEN - 2024 -
Females present larger deficit in heel-rise height at 3 months following an Achilles tendon rupture compared with
males
Elin Larsson, Niklas Nilsson, Julia Walstern, Annelie Brorsson, Katarina Nilsson-Helander
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY - 2024 -
The Calf Raise App shows good concurrent validity compared with a linear encoder in measuring total concentric
work
Farshad Ashnai, Jakob Lindskog, Annelie Brorsson, Katarina Nilsson-Helander, Susanne Beischer
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY - 2024 -
Musculotendinous ruptures of the achilles tendon had greater heel-rise height index compared with mid-substance rupture with non-operative management: A retrospective cohort
study
Michael R Carmont, Baldvin Gunnarsson, Annelie Brorsson, Katarina Nilsson-Helander
Journal of ISAKOS - 2024 -
The option of transosseous distal suture placement during minimally invasive Achilles tendon repair for high-risk patients can improve outcomes, however does not prevent
re-rupture
Michael R. Carmont, Katarina Nilsson-Helander, Malin Carling
BMC MUSCULOSKELETAL DISORDERS - 2024 -
Establishment of the Patient Acceptable Symptom State (PASS) for the Achilles Tendon Total Rupture Score in a Swedish
Population
Elin Larsson, Sara Brandt Knutsson, Annelie Brorsson, Christer Johansson, Katarina Nilsson-Helander
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE - 2024 -
The Delayed Presentation of Achilles Tendon Ruptures Is Associated With Marked Alterations in the Gene Expression of COL1A1, MMPs, TIMPs, and
IL-6
Niklas Nilsson, M. D.Abdul Alim, Franciele Dietrich-Zagonel, Sebastian Concaro, Annelie Brorsson, Katarina Nilsson-Helander, Pernilla Eliasson
American Journal of Sports Medicine - 2024 -
Factors That Affect Return to Sports After an Achilles Tendon Rupture: A Qualitative Content
Analysis
Unnur Saedis Jonsdottir, Annelie Brorsson, Katarina Nilsson-Helander, Roy Tranberg, Maria E H Larsson
Orthopaedic Journal of Sports Medicine - 2023 -
Both gastrocnemius aponeurosis flaps and semitendinosus tendon grafts are effective in the treatment of chronic Achilles tendon ruptures - a systematic
review.
Niklas Nilsson, Immanuel Stensöta, Katarina Nilsson-Helander, Annelie Brorsson, Michael R Carmont, Sebastian Concaro
BMC musculoskeletal disorders - 2023 -
Evaluation of the Achilles
Tendon
Niklas Nilsson, Annelie Brorsson, Katarina Nilsson-Helander, Jon Karlsson, Michael R Carmont
The Art of the Musculoskeletal Physical Exam - 2023 -
Good functional outcomes after endoscopic treatment for greater trochanteric pain
syndrome
Louise Karlsson, Philip Quist, Katarina Nilsson-Helander, Thorkell Snaebjörnsson, Anders Stålman, Ida Lindman, Axel Öhlin
Journal of Experimental Orthopaedics - 2023 -
Hallux valgus; An observational study on patient characteristics, surgical treatment and pre-operative HRQoL from the Swedish foot and ankle register
(Swefoot)
Ann-Charlott Söderpalm, Fredrik Montgomery, Katarina Nilsson-Helander, Maria C. Cöster
Foot - 2023 -
The influence of the COVID pandemic on the epidemiology of Achilles tendon ruptures in east Shropshire, United
Kingdom
Michael R Carmont, F. Morgan, K. Fakoya, C. Heaver, Annelie Brorsson, Katarina Nilsson-Helander
Journal of Isakos Joint Disorders & Orthopaedic Sports Medicine - 2023 -
Achilles tendon resting angle is able to detect deficits after an Achilles tendon rupture, but it is not a surrogate for direct measurements of tendon elongation, function or
symptoms
Elin Larsson, Katarina Nilsson-Helander, Lotta Falkheden Henning, Mervi Heiskanen, Michael R. Carmont, Karin Grävare Silbernagel, Annelie Brorsson
Knee Surgery, Sports Traumatology, Arthroscopy - 2022 -
Endoscopically assisted reconstruction of chronic Achilles tendon ruptures and re-ruptures using a semitendinosus autograft is a viable alternative to pre-existing
techniques.
Niklas Nilsson, Baldvin Gunnarsson, Michael R Carmont, Annelie Brorsson, Jón Karlsson, Katarina Nilsson-Helander
Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA - 2022 -
Disappointment and frustration, but long-term satisfaction: patient experiences undergoing treatment for a chronic Achilles tendon rupture-a qualitative
study.
Anna Nordenholm, Niklas Nilsson, Ferid Krupic, Eric Hamrin Senorski, Katarina Nilsson-Helander, Olof Westin, Jón Karlsson
Journal of orthopaedic surgery and research - 2022 -
Surgical treatment of chronic Achilles tendon rupture results in improved gait
biomechanics
Anna Nordenholm, Eric Hamrin Senorski, Olof Westin, Katarina Nilsson-Helander, Michael Möller, Jon Karlsson, Roland Zügner
Journal of Orthopaedic Surgery and Research - 2022 -
Sex differences in patients' recovery following an acute Achilles tendon rupture - a large cohort
study
Elin Larsson, Annelie Brorsson, Malin S Carling, Christer Johansson, Michael R Carmont, Katarina Nilsson-Helander
Bmc Musculoskeletal Disorders - 2022 -
Greater heel-rise endurance is related to better gait biomechanics in patients surgically treated for chronic Achilles tendon
rupture
Anna Nordenholm, Eric Hamrin Senorski, Katarina Nilsson-Helander, Michael Möller, Roland Zügner
Knee Surgery Sports Traumatology Arthroscopy - 2022 -
Patients with chronic Achilles tendon rupture have persistent limitations in patient-reported function and calf muscle function one year after surgical treatment - a case
series
Anna Nordenholm, Niklas Nilsson, Eric Hamrin Senorski, Katarina Nilsson-Helander, Olof Westin, Nicklas Olsson
Journal of Experimental Orthopaedics - 2022 -
The release of adhesions improves outcome following minimally invasive repair of Achilles tendon
rupture
Michael R Carmont, Sara Brandt Knutsson, Annelie Brorsson, Jón Karlsson, Katarina Nilsson-Helander
Knee Surgery Sports Traumatology Arthroscopy - 2022 -
MRI of the Achilles tendon—A comprehensive pictorial review. Part
one
Pawel Szaro, Katarina Nilsson-Helander, Michael R Carmont
European Journal of Radiology Open - 2021 -
MRI of the Achilles tendon – a comprehensive pictorial review. Part
two
Pawel Szaro, Katarina Nilsson-Helander, Michael R Carmont
European Journal of Radiology Open - 2021 -
The reliability, reproducibility and utilization of the radiographic Achilles Tendon Loading Angle in the management of Achilles Tendon
rupture.
Michael R Carmont, Annelie Brorsson, Kristoffer Weisskirchner Barfod, Laurence Ginder, Julie Littlehales, Jón Karlsson, Katarina Nilsson-Helander
Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons - 2021 -
ABC om Kronisk hälsenesmärta – diagnos och
behandling
Elin Larsson, Katarina Nilsson-Helander, Jón Karlsson, Annelie Brorsson
Läkartidningen - 2021 -
Endoscopically Assisted Reconstruction of the Achilles Tendon Using Semitendinosus
Graft
Michael R Carmont, Arunansu Saha, John-Henry Rhind, Niklas Nilsson, Jon Karlsson, Katarina Nilsson-Helander
Video Journal of Sports Medicine - 2021 -
STOP leg clots-Swedish multicentre trial of outpatient prevention of leg clots: study protocol for a randomised controlled trial on the efficacy of intermittent pneumatic compression on venous thromboembolism in lower leg immobilised
patients.
Simon Svedman, Björn Alkner, Hans E Berg, Erica Domeij-Arverud, Kenneth Jonsson, Katarina Nilsson-Helander, Paul W Ackermann
BMJ open - 2021 -
Age and Tightness of Repair Are Predictors of Heel-Rise Height After Achilles Tendon
Rupture.
Michael R Carmont, Jennifer A Zellers, Annelie Brorsson, Katarina Nilsson-Helander, Jón Karlsson, Karin Grävare Silbernagel
Orthopaedic journal of sports medicine - 2020 -
No difference in achilles tendon resting angle, patient-reported outcome or heel-rise height index between non-and early-weightbearing the first year after an achilles tendon
rupture
Michael R Carmont, Annelie Brorsson, Jón Karlsson, Katarina Nilsson-Helander
Muscles, Ligaments and Tendons Journal - 2020 -
The economic cost and patient-reported outcomes of chronic Achilles tendon
ruptures.
Niklas Nilsson, Katarina Nilsson-Helander, Eric Hamrin Senorski, Anna Holm, Jón Karlsson, Mikael Svensson, Olof Westin
Journal of experimental orthopaedics - 2020 -
Response to letter: Achilles tendon
re-rupture
Olof Westin, Katarina Nilsson-Helander, Jón Karlsson
Knee Surgery, Sports Traumatology, Arthroscopy - 2020 -
No difference in strength and clinical outcome between early and late repair after Achilles tendon
rupture.
Michael R Carmont, Jennifer A Zellers, Annelie Brorsson, Karin Grävare Silbernagel, Jón Karlsson, Katarina Nilsson-Helander
Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA - 2020 -
Achilles Tendon Ruptures in
Basketball
Michael R Carmont, Annelie Brorsson, Olof Westin, Katarina Nilsson-Helander, Jón Karlsson
Basketball Sports Medicine and Science. Laver L., Kocaoglu B., Cole B., Arundale A.J.H., Bytomski J., Amendola A. (eds) - 2020 -
Performance of the Achilles Tendon Total Rupture Score Over Time in a Large National Database: Development of an Instruction Manual for Accurate
Use.
Maria Swennergren Hansen, Katarina Nilsson-Helander, Jón Karlsson, Kristoffer Weisskirchner Barfod
The American journal of sports medicine - 2020 -
The achilles tendon total rupture score should be used with caution the first 6 months after
injury
Maria Swennergren Hansen, Katarina Nilsson-Helander, Jón Karlsson, Kristoffer Weisskrichner Barfod
British Journal of Sports Medicine. 53, suppl 1, pp. A7-A8 - 2019 -
Achilles Tendon
Ruptures
Jón Karlsson, Olof Westin, Mike Carmont, Katarina Nilsson-Helander
Sports Injuries of the Foot and Ankle: A Focus on Advanced Surgical Techniques. Gian Luigi Canata, Pieter d'Hooghe, Kenneth J. Hunt et al. (red.) - 2019 -
Longer duration of operative time enhances healing metabolites and improves patient outcome after Achilles tendon rupture
surgery
S. Svedman, Olof Westin, S. Aufwerber, G. Edman, Katarina Nilsson-Helander, Michael R Carmont, Jón Karlsson, P. W. Ackermann
Knee Surgery Sports Traumatology Arthroscopy - 2018 -
Older Age Predicts Worse Function 1 Year After an Acute Achilles Tendon Rupture: A Prognostic Multicenter Study on 391
Patients
Olof Westin, S. Svedman, Eric Hamrin Senorski, Eleonor Svantesson, Katarina Nilsson-Helander, Jón Karlsson, P. Ackerman, Kristian Samuelsson
Orthopaedic Journal of Sports Medicine - 2018 -
Calf Muscle Performance Deficits Remain 7 Years After an Achilles Tendon
Rupture
Annelie Brorsson, Karin Grävare Silbernagel, Nicklas Olsson, Katarina Nilsson-Helander
American Journal of Sports Medicine - 2018
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