Oslo Sports Trauma Research Center

Details about researcher: Håvard Visnes

CV

Håvard Visnes (b. 1974) qualified as an MD in 2006 and as a physical therapist in 1998.

In 2014, he defended his PhD thesis on "Risk factors for jumper´s knee". This 5-year project was based on a cohort of young talented volleyball players who have been assessed for potential risk factors for patellar tendinopathy (jumper´s knee).

Håvard is currently working as an orthopaedic surgeon at Hospital of Southern Norway, Kristiansand, Norway. He has been the leader of the Norwegian Knee Ligament Register 2017-23 and is still active in ACL & cartilage research.

In 2024 he published the project «Long term prognosis for jumper’s knee» in AJSM. Håvards sports background is volleyball, and he played elite volleyball for more than 10 years, where he also represented Norway on the national team.

Projects

• Predicting Outcome of Anterior Cruciate Ligament Reconstruction Through Machine Learning Analysis of National Knee Ligament Registries

  Project manager: Kyle Martin, Gilbert Moatshe, Roald Bahr, Lars Engebretsen

• Improving the Treatment of Anterior Cruciate Ligament Tears in Norway – who should have surgery?

  Project manager: Caroline Kooy Tveiten

• Trends in pediatric ACL-reconstructions in Norway (2005-2019)

  Project manager: Caroline Kooy Tveiten

• Patellar tendinopathy among senior high school volleyball players

  Project manager: Håvard Visnes

• The effect of eccentric training on patellar tendinopathy among volleyball players

  Project manager: Roald Bahr

Publications

• 2025

  • Microfracture Versus Arthroscopic Debridement for the Treatment of Symptomatic Cartilage Lesions of the Knee: 2-Year Results From a Multicenter Double-Blinded Randomized Controlled Trial

    Randsborg, Per-Henrik; Frøseth Aae, Tommy; Visnes, Håvard; Birkenes, Thomas; Šaltytė Benth, Jūratė; Bjerkestand Lian, Øystein; Andreassen Hanvold, Heidi; Årøen, Asbjørn

    American Journal of Sports Medicine 2025 Jul;53(9):2107-2117. doi: 10.1177/03635465251346961. Epub 2025 Jun 26.

• 2024

  • Unsupervised Machine Learning of the Combined Danish and Norwegian Knee Ligament Registers: Identification of 5 Distinct Patient Groups With Differing ACL Revision Rates

    Martin, Kyle; Wastvedt, Solvejg; Pareek, Ayoosh; Persson, Andreas; Visnes, Håvard; Fenstad, Anne Marie; Moatshe, Gilbert; Wolfson, Julian; Martin, Lind; Engebretsen, Lars

    American Journal of Sports Medicine 2024 Mar;52(4):881-891

  • Long-term Prognosis of Patellar Tendinopathy (Jumper's Knee) in Young, Elite Volleyball Players: Tendon Changes 11 Years After Baseline

    Visnes, Håvard; Bache-Mathiesen, Lena Kristin; Yamaguchi, Tetsuo; Gilhuus, Hans Petter; Hector Algaard, Knut Robert; Hisdal, Erling; Bahr, Roald

    American Journal of Sports Medicine 2024 Oct 22:3635465241284648. doi: 10.1177/03635465241284648. Online ahead of print.

• 2023

  • Good validity in the Norwegian Knee Ligament Register: assessment of data quality for key variables in primary and revision cruciate ligament reconstructions from 2004 to 2013

    Midttun, Espen; Torheim Andersen, Morten; Engebretsen, Lars; Visnes, Håvard; Fenstad, Anne Marie; Gjertsen, Jan-Erik; Persson, Andreas

    BMC Musculoskelet Disorder 2022:Mar 9;23(1):231:Page 1-7

  • The Long-Term Risk of Knee Arthroplasty in Patients with Arthroscopically Verified Focal Cartilage Lesions: A Linkage Study with the Norwegian Arthroplasty Register, 1999 to 2020

    Birkenes, Thomas; Furnes, Ove; Laastad Lygre, Stein Haakon; Solheim, Eirik; Aarøen, Asbjørn; Knutsen, Gunnar; Drogset, Jon Olav; Heir, Stig; Engebretsen, Lars; Løken, Sverre; Visnes, Håvard

    The Journal of Bone and Joint Surgery 2023 Jun 21;105(12):951-961

  • Musculoskeletal pain is not clearly associated with the risk of anterior cruciate ligament reconstruction in adolescents

    Strømme, Sofie Hammernes; Hjelle Guddal, Maren; Fenstad, Anne Marie; Visnes, Håvard; Zwart, John-Anker; Storheim, Kjersti; Bakke Johnsen, Marianne

    BMJ Open Sport & Exercise Medicine 2023 May 15;9(2):e001453. doi: 10.1136/bmjsem-2022-001453. eCollection 2023.

  • Predicting subjective failure of ACL reconstruction: a machine learning analysis of the Norwegian Knee Ligament Register and patient reported outcomes

    Martin, Kyle; Wastvedt, Solvejg; Pareek, Ayoosh; Persson, Andreas; Visnes, Håvard; Fenstad, Anne Marie; Moatshe, Gilbert; Wolfson, Julain; Engebretsen, Lars

    Journal of ISAKOS 2022:Vol 7(3): Pages 1-9

  • Ceiling Effect of the Combined Norwegian and Danish Knee Ligament Registers Limits Anterior Cruciate Ligament Reconstruction Outcome Prediction

    Martin, Kyle; Wastvedt, Solvejg; Pareek, Ayoosh; Persson, Andreas; Visnes, Håvard; Fenstad, Anne Marie; Moatshe, Gilbert; Wolfson, Julian; Lind, Martin; Engebretsen, Lars

    American Journal of Sports Medicine 2023 Jul;51(9):2324-2332

  • Major Increase in Incidence of Pediatric ACL Reconstructions From 2005 to 2021: A Study From the Norwegian Knee Ligament Register

    Kooy Tveiten, Caroline E v. W; Jakobsen, Rune B.; Fenstad, Anne Marie; Persson, Andreas; Visnes, Håvard; Engebretsen, Lars; Ekås, Guri Ranum

    American Journal of Sports Medicine 2023 Sep;51(11):2891-2899

• 2022

  • ACL Reconstruction Patients Have Increased Risk of Knee Arthroplasty at 15 Years of Follow-up: Data from the Norwegian Knee Ligament Register and the Norwegian Arthroplasty Register from 2004 to 2020

    Visnes, Håvard; Gifstad, Tone; Persson, Andreas; Låstad Lygre, Stein Håkon; Engebretsen, Lars; Drogset, Jon Olav; Furnes, Ove

    JB & JS Open Access 2022 Jun 21;7(2):e22.00023. eCollection 2022 Apr-Jun.

  • Machine learning algorithm to predict anterior cruciate ligament revision demonstrates external validity

    Martin, Kyle R; Wastved, Solvejg; Pareek, Ayoosh; Persson, Andreas; Visnes, Håvard; Fenstad, Anne Marie; Moatshe, Gilbert; Wolfson Julian; Lind, Martin; Engebretsen, Lars

    Knee Surg Sports Traumatol Arthrosc. 2022 Feb;30(2):368-375. doi: 10.1007/s00167-021-06828-w. Epub 2022 Jan 1.

• 2021

  • Predicting Anterior Cruciate Ligament Reconstruction Revision: A Machine Learning Analysis Utilizing the Norwegian Knee Ligament Register

    Martin, Kyle R; Wastvedt, Solvejg; Pareek, Ayoosh; Persson, Andreas; Visnes, Håvard; Fenstad, Anne Marie; Moatshe, Gilbert; Wolfson, Julian; Engebretsen, Lars

    The Journal of Bone and Joint Surgery 2022 Jan 19;104(2):145-153

  • Low annual hospital volume of anterior cruciate ligament reconstruction is not associated with higher revision rates

    Martin, Kyle R; Persson, Andreas; Moatshe, Gilbert; Fenstad, Anne Marie; Engebretsen, Lars; Drogset, Jon Olav; Visnes, Håvard

    Knee Surgery, Sports Traumatology, Arthroscopy; official journal of the ESSKA 2022 May;30(5):1575-1583

• 2018

  • Genetic variation in candidate genes and patellar tendinopathy: prospective cohort study of 126 elite volleyball players

    Haug, KBF; Visnes, Håvard; Sivertsen, Einar A; Bahr, Roald

    Translational Sports Medicine 2018: published online Feb 12

• 2014

  • Ultrasound characteristics of the patellar and quadriceps tendons among young elite athletes

    Visnes, Håvard; Tegnander, Agnar; Bahr, Roald

    Scandinavian Journal of Medicine and Science in Sports 2015:25(2):205-215

  • Risk factors for jumper’s knee

    Visnes, Håvard

    PhD Thesis, University of Bergen, Norway, 2014

• 2013

  • Mechanical properties of the patellar tendon in elite volleyball players with and without patellar tendinopathy

    Helland, Christian; Bojsen-Møller, Jens; Raastad, Truls; Seynnes, Olivier Moltubakk, Marie; Jakobsen, Vidar; Visnes, Håvard; Bahr, Roald

    British Journal of Sports Medicine 2013:47(13):862-868

• 2012

  • Jumper´s knee paradox - jumping ability is a risk factor for developing jumper´s knee: a 5-year prospective study

    Visnes, Håvard; Aandahl, Hans Åge; Bahr, Roald

    British Journal of Sports Medicine 2013:47(8):503-507

  • Training volume and body composition as risk factors for developing jumper´s knee among young elite volleyball players

    Visnes, Håvard; Bahr, Roald

    Scandinavian Journal of Medicine and Science in Sports 2013:23(5):607-613

• 2007

  • The evolution of eccentric training as treatment for patellar tendinopathy (jumper's knee): a critical review of exercise programmes

    Visnes, Håvard; Bahr, Roald

    British Journal of Sports Medicine 2007:41(4):217-223

• 2005

  • No Effect of Eccentric Training on Jumper’s Knee in Volleyball Players During the Competitive Season

    Visnes, Håvard; Hoksrud, Aasne; Cook, Jill; Bahr, Roald

    Clinical Journal of Sport Medicine 2005:15(4):227-234