Frede Jon Frihagen

Førsteamanuensis - Ortopedisk avdeling - Ullevål
Bilde av Frede Jon Frihagen
English version of this page
Brukernavn
Besøksadresse Kirkeveien 166 OUS Ullevål 0450 Oslo
Postadresse Postboks 4956 Nydalen OUS, Ullevål 0424 Oslo
Andre tilknytninger Institutt for pedagogikk (Student)

Publikasjoner

  • Hassellund, Sondre Stafsnes; Zolic-Karlsson, Zinajda; Williksen, John Håkon; Husby, Torstein; Madsen, Jan Erik & Frihagen, Frede (2021). Surgical treatment is not cost-effective compared to nonoperative treatment for displaced distal radius fractures in patients 65 years and over. Bone & Joint Open (BJO). ISSN 2633-1462. 2(12), s. 1027–1034. doi: 10.1302/2633-1462.212.BJO-2021-0108.R1. Fulltekst i vitenarkiv
  • Hassellund, Sondre Stafsnes; Williksen, John Håkon; Mjelde, Marit; Pripp, Are Hugo; Rosales, Carina & Karlsen, Øystein Espeland [Vis alle 8 forfattere av denne artikkelen] (2021). Infographic: Cast immobilization is non-inferior to volar locking plates in relation to QuickDASH after one year in patients aged 65 years and older: a randomized controlled trial of displaced distal radius fractures. . The Bone & Joint Journal. ISSN 2049-4394. 103-B(2), s. 245–246. doi: 10.1302/0301-620X.103B2.BJJ-2020-2562.
  • Midtgaard, Kaare Sourin; Frihagen, Frede ; Dornan, Grant J.; Coucheron, Marius; Fossåen, Carina Lavransdatter & Grundel, Dag [Vis alle 12 forfattere av denne artikkelen] (2021). Predicting secondary surgery after operative fixation of olecranon fractures: a model using data from 800 patients. JSES International. 5(5), s. 948–953. doi: 10.1016/j.jseint.2021.04.014. Fulltekst i vitenarkiv
  • Comeau-Gauthier, Marianne; Zura, Robert D.; Bzovsky, Sofia; Schemitsch, Emil H.; Axelrod, Daniel & Avram, Victoria [Vis alle 12 forfattere av denne artikkelen] (2021). Heterotopic Ossification Following Arthroplasty for Femoral Neck Fracture. Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. 103(14), s. 1328–1334. doi: 10.2106/JBJS.20.01586. Fulltekst i vitenarkiv
  • Ræder, Lise Benedikte Wendt; Andersen, Mette Renate; Madsen, Jan Erik; Jacobsen, Silje Berild; Frihagen, Frede & Figved, Wender (2021). Prognostic value of the Haraguchi classification in posterior malleolar fractures in A0 44-C type ankle fractures. Injury. ISSN 0020-1383. 52(10), s. 3150–3155. doi: 10.1016/j.injury.2021.07.038.
  • Alm, Carl Erik; Gjertsen, Jan-Erik; Basso, Trude; Matre, Kjell; Röhrl, Stephan Maximillian & Madsen, Jan Erik [Vis alle 7 forfattere av denne artikkelen] (2021). Trochanteric stabilizing plate in the treatment of trochanteric fractures: a scoping review. Acta Orthopaedica. ISSN 1745-3674. 92, s. 1–6. doi: 10.1080/17453674.2021.1954305. Fulltekst i vitenarkiv
  • Ernst, Gernot Walter; Watne, Leiv Otto; Frihagen, Frede ; Wyller, Torgeir Bruun; Dominik, Andreas & Rostrup, Morten (2021). Low Heart Rate Variability Predicts Stroke and Other Complications in the First Six Postoperative Months After a Hip Fracture Operation. Frontiers in Cardiovascular Medicine. ISSN 2297-055X. 8, s. 1–8. doi: 10.3389/fcvm.2021.640970.
  • Dakhil, Shams; Thingstad, Pernille; Frihagen, Frede ; Johnsen, Lars Gunnar; Lydersen, Stian & Skovlund, Eva [Vis alle 10 forfattere av denne artikkelen] (2021). Orthogeriatrics prevents functional decline in hip fracture patients: report from two randomized controlled trials. BMC Geriatrics. ISSN 1471-2318. 21(208). doi: 10.1186/s12877-021-02152-7. Fulltekst i vitenarkiv
  • Alm, Carl Erik; Frihagen, Frede ; Dybvik, Eva Hansen; Matre, Kjell; Madsen, Jan Erik & Gjertsen, Jan-Erik (2021). Implants for trochanteric fractures in Norway: the role of the trochanteric stabilizing plate—a study on 20,902 fractures from the Norwegian hip fracture register 2011–2017. Journal of Orthopaedic Surgery and Research. ISSN 1749-799X. 16, s. 1–8. doi: 10.1186/s13018-020-02163-x. Fulltekst i vitenarkiv
  • Hassellund, Sondre Stafsnes; Williksen, John Håkon; Mjelde Laane, Marit; Pripp, Are Hugo; Rosales, Carina & Karlsen, Øyvind [Vis alle 8 forfattere av denne artikkelen] (2021). Cast immobilization is non-inferior to volar locking plates in relation to QuickDASH after one year in patients aged 65 years and older: a randomized controlled trial of displaced distal radius fractures. The Bone & Joint Journal. ISSN 2049-4394. 103-B(2), s. 247–255. doi: 10.1302/0301-620X.103B2.BJJ-2020-0192.R2.
  • Blankstein, Michael; Schemitsch, Emil H.; Bzovsky, Sofia; Poolman, Rudolf W.; Frihagen, Frede & Axelrod, Daniel [Vis alle 10 forfattere av denne artikkelen] (2020). What factors increase revision surgery risk when treating displaced femoral neck fractures with arthroplasty: A secondary analysis of the HEALTH Trial. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S49–S54. doi: 10.1097/BOT.0000000000001936.
  • Sivaratnam, Surabhi; Comeau-Gauthier, Marianne; Sprague, Sheila; Schemitsch, Emil H.; Poolman, Rudolf W. & Frihagen, Frede [Vis alle 9 forfattere av denne artikkelen] (2020). Predictors of loss to follow-up in hip fracture trials: A secondary analysis of the FAITH and HEALTH Trials. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S22–S28. doi: 10.1097/BOT.0000000000001928.
  • Afaq, Shaikh; OʼHara, Nathan N.; Schemitsch, Emil H.; Bzovsky, Sofia; Sprague, Sheila & Poolman, Rudolf W. [Vis alle 11 forfattere av denne artikkelen] (2020). Arthroplasty versus internal fixation for the treatment of undisplaced femoral neck fractures: A retrospective cohort study. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S9–S14. doi: 10.1097/BOT.0000000000001940.
  • Neilly, David; MacDonald, David R W; Sprague, Sheila; Bzovsky, Sofia; Axelrod, Daniel & Poolman, Rudolf W. [Vis alle 11 forfattere av denne artikkelen] (2020). Predictors of medical serious adverse events in hip fracture patients treated with arthroplasty. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S42–S48. doi: 10.1097/BOT.0000000000001935.
  • Axelrod, Daniel; Comeau-Gauthier, Marianne; Bzovsky, Sofia; Schemitsch, Emil H.; Poolman, Rudolf W. & Frihagen, Frede [Vis alle 10 forfattere av denne artikkelen] (2020). What predicts health-related quality of life for patients with displaced femoral neck fractures managed with arthroplasty? A secondary analysis of the HEALTH Trial. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S29–S36. doi: 10.1097/BOT.0000000000001933.
  • MacDonald, David R W; Neilly, David; Schneider, Prism S.; Bzovsky, Sofia; Sprague, Sheila & Axelrod, Daniel [Vis alle 12 forfattere av denne artikkelen] (2020). Venous thromboembolism in hip fracture patients: A subanalysis of the FAITH and HEALTH Trials. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S70–S75. doi: 10.1097/BOT.0000000000001939.
  • Bzovsky, Sofia; Comeau-Gauthier, Marianne; Schemitsch, Emil H.; Swiontkowski, Marc; Heels-Ansdell, Diane & Frihagen, Frede [Vis alle 8 forfattere av denne artikkelen] (2020). Factors associated with mortality after surgical management of femoral neck fractures. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S15–S21. doi: 10.1097/BOT.0000000000001937.
  • Noori, Atefeh; Sprague, Sheila; Bzovsky, Sofia; Schemitsch, Emil H.; Poolman, Rudolf W. & Frihagen, Frede [Vis alle 10 forfattere av denne artikkelen] (2020). Predictors of Long-Term Pain After Hip Arthroplasty in Patients With Femoral Neck Fractures: A Cohort Study. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S55–S63. doi: 10.1097/BOT.0000000000001929.
  • Blankstein, Michael; Schemitsch, Emil H.; Bzovsky, Sofia; Axelrod, Daniel; Poolman, Rudolf W. & Frihagen, Frede [Vis alle 10 forfattere av denne artikkelen] (2020). The FAITH and HEALTH Trials: Are We Studying Different Hip Fracture Patient Populations? Journal of Orthopaedic Trauma. ISSN 0890-5339. 34, s. S1–S8. doi: 10.1097/BOT.0000000000001930.
  • Svenøy, Stian; Watne, Leiv; Hestnes, Ingvild; WESTBERG, MARIANNE; Madsen, Jan Erik & Frihagen, Frede Jon (2020). Results after introduction of a hip fracture care pathway: comparison with usual care. Acta Orthopaedica. ISSN 1745-3674. 91(2), s. 139–145. doi: 10.1080/17453674.2019.1710804.
  • Ingstad, Frida; Solberg, Lene Bergendal; Nordsletten, Lars; Thorsby, Per Medbøe; Hestnes, Ingvild & Frihagen, Frede Jon (2020). Vitamin D status and complications, readmissions, and mortality after hip fracture. Osteoporosis International. ISSN 0937-941X. doi: 10.1007/s00198-020-05739-9. Fulltekst i vitenarkiv
  • Ræder, Lise Benedikte Wendt; Stake, Ingrid Kvello; Madsen, Jan Erik; Frihagen, Frede Jon; Jacobsen, Silje Berild & Andersen, Mette Renate [Vis alle 7 forfattere av denne artikkelen] (2020). Randomized trial comparing suture button with single 3.5 mm syndesmotic screw for ankle syndesmosis injury: similar results at 2 years. Acta Orthopaedica. ISSN 1745-3674. 91. doi: 10.1080/17453674.2020.1818175. Fulltekst i vitenarkiv
  • Frihagen, Frede Jon; Madsen, Jan Erik; Sundfeldt, Mikael; Flugsrud, Gunnar B; Andreassen, Joakim S. & Andersen, Mette Renate [Vis alle 7 forfattere av denne artikkelen] (2020). Taylor spatial frame or reamed intramedullary nailing for closed fractures of the tibial shaft: A randomized controlled trial. Journal of Orthopaedic Trauma. ISSN 0890-5339. 34(11), s. 612–619. doi: 10.1097/BOT.0000000000001802.
  • Ræder, Lise Benedikte Wendt; Figved, Wender; Madsen, Jan Erik; Frihagen, Frede Jon; Jacobsen, Silje Berild & Andersen, Mette Renate (2020). Better outcome for suture button compared with single syndesmotic screw for syndesmosis injury: Five-year results of a randomized controlled trial. The Bone & Joint Journal. ISSN 2049-4394. 102-B(2), s. 212–219. doi: 10.1302/0301-620X.102B2.BJJ-2019-0692.R2.
  • Bhandari, Mohit; Einhorn, Thomas A.; Guy-Att, Gordon; Schemitsch, Emil H.; Zura, Robert D. & Sprague, Sheila [Vis alle 16 forfattere av denne artikkelen] (2019). Total hip arthroplasty or hemiarthroplasty for hip fracture. New England Journal of Medicine. ISSN 0028-4793. 381(23), s. 2199–2208. doi: 10.1056/NEJMoa1906190.
  • Pihl, Elsa; Kristoffersen, Målfrid Holen; Rosenlund, Anne-Mari; Laszlo, Sofia; Berglöf, Mida & Ribom, Eva [Vis alle 16 forfattere av denne artikkelen] (2019). The proximal hamstring avulsion clinical trial (PHACT) - a randomised controlled non-inferiority trial of operative versus non-operative treatment of proximal hamstrings avulsions: Study protocol. BMJ Open. ISSN 2044-6055. 9:e031607(9), s. 1–5. doi: 10.1136/bmjopen-2019-031607.
  • Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Andreasen, Camilla; Brunborg, Cathrine & Stenbro, May-Britt [Vis alle 18 forfattere av denne artikkelen] (2019). Determinants of trabecular bone score and prevalent vertebral fractures in women with fragility fractures: a cross-sectional sub-study of NoFRACT. Osteoporosis International. ISSN 0937-941X. 31, s. 505–514. doi: 10.1007/s00198-019-05215-z. Fulltekst i vitenarkiv
  • Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Andreasen, Camilla; Brunborg, Cathrine & Stenbro, May-Britt [Vis alle 19 forfattere av denne artikkelen] (2019). Post-Fracture Risk Assessment: Target The Centrally Sited Fractures First! A Substudy of NoFRACT. Journal of Bone and Mineral Research. ISSN 0884-0431. 34(11), s. 2036–2044. doi: 10.1002/jbmr.3827. Fulltekst i vitenarkiv
  • Andersen, Mette Renate; Diep, Lien My; Frihagen, Jon Frede; Hellund, Johan Castberg; Madsen, Jan Erik & Figved, Paul Wender (2019). Importance of Syndesmotic Reduction on Clinical Outcome After Syndesmosis Injuries. Journal of Orthopaedic Trauma. ISSN 0890-5339. 33(8), s. 397–403. doi: 10.1097/BOT.0000000000001485.
  • Bartels, Stefan; Gjertsen, Jan-Erik; Frihagen, Frede Jon; Rogmark, Cecilia & Utvåg, Stein-Erik (2019). Low bone density and high morbidity in patients between 55 and 70 years with displaced femoral neck fractures: A case-control study of 50 patients vs 150 normal controls. BMC Musculoskeletal Disorders. ISSN 1471-2474. 20, s. 1–8. doi: 10.1186/s12891-019-2732-8. Fulltekst i vitenarkiv
  • Figved, Wender; Myrstad, Marius; Saltvedt, Ingvild; Finjarn, Merete; Odland, Liv Marie Flaten & Frihagen, Frede Jon (2019). Team approach: Multidisciplinary treatment of hip fractures in elderly patients: Orthogeriatric care. Journal of bone and joint surgery reviews (JBJS Reviews). ISSN 2329-9185. 7(6), s. 1–9. doi: 10.2106/JBJS.RVW.18.00136. Fulltekst i vitenarkiv
  • Ranhoff, Anette Hylen; Saltvedt, Ingvild; Frihagen, Frede Jon; Ræder, Johan; Maini, Sameer & Sletvold, Olav (2019). Interdisciplinary care of hip fractures: Orthogeriatric models, alternative models, interdisciplinary teamwork. Baillière's Best Practice & Research : Clinical Rheumatology. ISSN 1521-6942. 33(2), s. 205–226. doi: 10.1016/j.berh.2019.03.015. Fulltekst i vitenarkiv
  • Frisvoll, Cassandra; Clarke-Jenssen, John; Madsen, Jan Erik; Flugsrud, Gunnar B; Frihagen, Frede Jon & Andreassen, Geir [Vis alle 7 forfattere av denne artikkelen] (2019). Long-term outcomes after high-energy open tibial fractures: Is a salvaged limb superior to prosthesis in terms of physical function and quality of life? European Journal of Orthopaedic Surgery & Traumatology (EJOST). ISSN 1633-8065. 29(4), s. 899–906. doi: 10.1007/s00590-019-02382-x.
  • Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Andreasen, Camilla; Brunborg, Cathrine & Stenbro, May-Britt [Vis alle 20 forfattere av denne artikkelen] (2019). High prevalence of vertebral fractures and low trabecular bone score in patients with fragility fractures: A cross-sectional sub-study of NoFRACT. Bone. ISSN 8756-3282. 122, s. 14–21. doi: 10.1016/j.bone.2019.02.008. Fulltekst i vitenarkiv
  • Dolatowski, Filip Celestyn; Frihagen, Frede Jon; Bartels, Stefan; Opland, Vidar; Saltyte Benth, Jurate & Talsnes, Ove [Vis alle 8 forfattere av denne artikkelen] (2019). Screw Fixation Versus Hemiarthroplasty for Nondisplaced Femoral Neck Fractures in Elderly Patients - A Multicenter Randomized Controlled Trial. Journal of bone and joint surgery reviews (JBJS Reviews). ISSN 2329-9185. 101(2), s. 136–144. doi: 10.2106/JBJS.18.00316.
  • Halaas, Nathalie Bodd; Blennow, Kaj; Idland, Ane-Victoria; Wyller, Torgeir Bruun; Ræder, Johan & Frihagen, Frede Jon [Vis alle 9 forfattere av denne artikkelen] (2018). Neurofilament light in serum and cerebrospinal fluid of hip fracture patients with delirium. Dementia and Geriatric Cognitive Disorders. ISSN 1420-8008. 46(5-6), s. 346–357. doi: 10.1159/000494754. Fulltekst i vitenarkiv
  • Figved, Wender; Svenøy, Stian; Röhrl, Stephan Maximillian; Dahl, Jon; Nordsletten, Lars & Frihagen, Frede Jon (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 Orthopaedica. ISSN 1745-3674. 89(5), s. 503–508. doi: 10.1080/17453674.2018.1475899. Fulltekst i vitenarkiv
  • Torbergsen, Anne Cathrine; Watne, Leiv; Frihagen, Frede Jon; Wyller, Torgeir Bruun & Mowe, Morten (2018). Effects of nutritional intervention upon bone turnover in elderly hip fracture patients. Randomized controlled trial. Clinical Nutrition ESPEN. ISSN 2405-4577. doi: 10.1016/j.clnesp.2017.11.012.
  • Andreasen, Camilla; Solberg, Lene Bergendal; Basso, Trude; Borgen, Tove Tveitan; Dahl, Cecilie & Wisløff, Torbjørn [Vis alle 20 forfattere av denne artikkelen] (2018). Effect of a Fracture Liaison Service on the Rate of Subsequent Fracture Among Patients With a Fragility Fracture in the Norwegian Capture the Fracture Initiative (NoFRACT): A Trial Protocol. JAMA Network Open. ISSN 2574-3805. 1(8). doi: 10.1001/jamanetworkopen.2018.5701. Fulltekst i vitenarkiv
  • ANDERSEN, METTE RENATE; Frihagen, Frede Jon; Hellund, Johan Castberg; Madsen, Jan Erik & Figved, Wender (2018). Randomized trial comparing suture button with single syndesmotic screw for syndesmosis injury. Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. 100(1), s. 2–12. doi: 10.2106/JBJS.16.01011.
  • Hassel, Bjørnar; Mariussen, Espen; Idland, Ane-Victoria; Dahl, Gry Torsæter; Ræder, Johan & Frihagen, Frede Jon [Vis alle 9 forfattere av denne artikkelen] (2018). CSF sodium at toxic levels precedes delirium in hip fracture patients. Neurotoxicology. ISSN 0161-813X. 69(December), s. 11–16. doi: 10.1016/j.neuro.2018.08.010.
  • Malouf-Sierra, Jorge; Tarantino, Umberto; García-Hernández, Pedro A.; Corradini, Costantino; Overgaard, Søren & Stepan, Jan J. [Vis alle 14 forfattere av denne artikkelen] (2017). Effect of teriparatide or risedronate in elderly patients with a recent pertrochanteric hip fracture: final results of a 78-week randomized clinical trial. Journal of Bone and Mineral Research. ISSN 0884-0431. 32(5), s. 1040–1051. doi: 10.1002/jbmr.3067.
  • Hov, Karen Roksund; Bolstad, Nils; Idland, Ane-Victoria; Zetterberg, Henrik; Blennow, Kaj & Chaudhry, Farrukh Abbas [Vis alle 10 forfattere av denne artikkelen] (2017). Cerebrospinal Fluid S100B and Alzheimer's Disease Biomarkers in Hip Fracture Patients with Delirium. Dementia and Geriatric Cognitive Disorders Extra. ISSN 1664-5464. 7(3), s. 374–385. doi: 10.1159/000481853. Fulltekst i vitenarkiv
  • Idland, Ane-Victoria; Wyller, Torgeir Bruun; Støen, Randi; Dahl, Gry Torsæter; Frihagen, Frede Jon & Brækhus, Anne [Vis alle 7 forfattere av denne artikkelen] (2017). Cerebrospinal Fluid Phosphate in Delirium after Hip Fracture. Dementia and Geriatric Cognitive Disorders Extra. ISSN 1664-5464. 7(3), s. 309–317. doi: 10.1159/000478723. Fulltekst i vitenarkiv
  • Svenøy, Stian; WESTBERG, MARIANNE; Figved, Wender; Valland, Haldor; Brun, Ole-Christian Laahne & Wangen, Helge [Vis alle 8 forfattere av denne artikkelen] (2017). Posterior versus lateral approach for hemiarthroplasty after femoral neck fracture: Early complications in a prospective cohort of 583 patients. Injury. ISSN 0020-1383. 48(7), s. 1565–1569. doi: 10.1016/j.injury.2017.03.024.
  • Ernst, Gernot Walter; Watne, Leiv Otto; Frihagen, Frede Jon; Wyller, Torgeir Bruun; Dominik, Andreas & Rostrup, Morten (2017). Decreases in heart rate variability are associated with postoperative complications in hip fracture patients. PLOS ONE. ISSN 1932-6203. 12:e0180423(7), s. 1–14. doi: 10.1371/journal.pone.0180423. Fulltekst i vitenarkiv
  • Guren, Ellen; Figved, Wender; Frihagen, Frede Jon; Watne, Leiv Otto & WESTBERG, MARIANNE (2017). Prosthetic joint infection?a devastating complication of hemiarthroplasty for hip fracture. Acta Orthopaedica. ISSN 1745-3674. 88(4), s. 383–389. doi: 10.1080/17453674.2017.1301009.
  • Bartels, Stefan; Gjertsen, Jan-Erik; Frihagen, Frede Jon; Rogmark, Cecilia & Utvåg, Stein-Erik (2017). High failure rate after internal fixation and beneficial outcome after arthroplasty in treatment of displaced femoral neck fractures in patients between 55 and 70 years. An observational study of 2,713 patients reported to the Norwegian Hip Fracture Register. Acta Orthopaedica. ISSN 1745-3674. 89(1), s. 53–58. doi: 10.1080/17453674.2017.1376514. Fulltekst i vitenarkiv
  • Neerland, Bjørn Erik; Krogseth, Maria; Juliebø, Vibeke; Ranhoff, Anette Hylen; Engedal, Knut & Frihagen, Frede Jon [Vis alle 9 forfattere av denne artikkelen] (2017). Perioperative hemodynamics and risk for delirium and new onset dementia in hip fracture patients; A prospective follow-up study. PLOS ONE. ISSN 1932-6203. 12(7:e0180641), s. 1–18. doi: 10.1371/journal.pone.0180641. Fulltekst i vitenarkiv
  • Tsukanaka, Masako; Støen, Ragnhild Øydna; Figved, Wender; Frihagen, Frede Jon; Nordsletten, Lars & Röhrl, Stephan Maximillian (2017). Steady state acetabular cartilage wear after bipolar hemiarthroplasty: a case series of 10 patients With radiostereometric analysis. HIP International. ISSN 1120-7000. 27(2), s. 193–197. doi: 10.5301/hipint.5000437.
  • Torbergsen, Anne Cathrine; Watne, Leiv Otto; Wyller, Torgeir Bruun; Frihagen, Frede Jon; Strømsøe, Knut & Bøhmer, Thomas [Vis alle 7 forfattere av denne artikkelen] (2017). Micronutrients and the risk of hip fracture: Case–control study. Clinical Nutrition. ISSN 0261-5614. 36(2), s. 438–443. doi: 10.1016/j.clnu.2015.12.014.
  • Idland, Ane-Victoria; Wyller, Torgeir Bruun; Støen, Randi; Eri, Lars Magne; Frihagen, Frede Jon & Ræder, Johan [Vis alle 13 forfattere av denne artikkelen] (2016). Preclinical amyloid-β and axonal degeneration pathology in delirium. Journal of Alzheimer's Disease. ISSN 1387-2877. 55(1), s. 371–379. doi: 10.3233/JAD-160461.
  • Hall, Roanna J.; Watne, Leiv Otto; Idland, Ane-Victoria; Ræder, Johan; Frihagen, Frede Jon & MacLullich, Alasdair M.J. [Vis alle 9 forfattere av denne artikkelen] (2016). Cerebrospinal fluid levels of neopterin are elevated in delirium after hip fracture. Journal of Neuroinflammation. ISSN 1742-2094. 13:170. doi: 10.1186/s12974-016-0636-1.
  • Neerland, Bjørn Erik; Hall, Roanna J.; Seljeflot, Ingebjørg; Frihagen, Frede Jon; MacLullich, Alasdair M.J. & Ræder, Johan [Vis alle 8 forfattere av denne artikkelen] (2016). Associations between delirium and preoperative cerebrospinal fluid C-reactive protein, interleukin-6, and interleukin-6 receptor in individuals with acute hip fracture. Journal of The American Geriatrics Society. ISSN 0002-8614. 64(7), s. 1456–1463. doi: 10.1111/jgs.14238.
  • Watne, Leiv Otto; Idland, Ane-Victoria; Fekkes, Durk; Ræder, Johan; Frihagen, Frede Jon & Ranhoff, Anette Hylen [Vis alle 9 forfattere av denne artikkelen] (2016). Increased CSF levels of aromatic amino acids in hip fracture patients with delirium suggests higher monoaminergic activity. BMC Geriatrics. ISSN 1471-2318. 16(149). doi: 10.1186/s12877-016-0324-0. Fulltekst i vitenarkiv
  • Hov, Karen Roksund; Berg, Jens Petter; Frihagen, Frede Jon; Ræder, Johan; Hall, Roanna J. & Wyller, Torgeir Bruun [Vis alle 7 forfattere av denne artikkelen] (2016). Blood-cerebrospinal fluid barrier integrity in delirium determined by Q-Albumin. Dementia and Geriatric Cognitive Disorders. ISSN 1420-8008. 41(3-4), s. 192–198. doi: 10.1159/000443789.
  • Dolatowski, Filip Celestyn; Adampour, Mina; Frihagen, Frede Jon; Stavem, Knut; Utvåg, Stein-Erik & Hoelsbrekken, Sigurd Erik (2016). Preoperative posterior tilt of at least 20° increased the risk of fixation failure in Garden-I and -II femoral neck fractures: 322 patients followed for a mean of 3 years. Acta Orthopaedica. ISSN 1745-3674. 87(3), s. 252–256. doi: 10.3109/17453674.2016.1155253. Fulltekst i vitenarkiv
  • Krogseth, Maria; Watne, Leiv Otto; Juliebø, Vibeke; Skovlund, Eva; Engedal, Knut & Frihagen, Frede Jon [Vis alle 7 forfattere av denne artikkelen] (2016). Delirium is a risk factor for further cognitive decline in cognitively impaired hip fracture patients. Archives of gerontology and geriatrics (Print). ISSN 0167-4943. 64, s. 38–44. doi: 10.1016/j.archger.2015.12.004.
  • Slobogean, Gerard P.; Giannoudis, Peter V.; Frihagen, Frede Jon; Forte, Mary L; Morshed, Saam & Bhandari, Mohit (2015). Bigger data, bigger problems. Journal of Orthopaedic Trauma. ISSN 0890-5339. 29, s. S43–S46. doi: 10.1097/BOT.0000000000000463.
  • WESTBERG, MARIANNE; Frihagen, Frede Jon; Brun, Ole-Christian Laahne; Figved, Wender; Grøgaard, Bjarne & Valland, Haldor [Vis alle 8 forfattere av denne artikkelen] (2015). Effectiveness of Gentamicin-containing collagen sponges for prevention of surgical site infection after hip arthroplasty: A multicenter randomized trial. Clinical Infectious Diseases. ISSN 1058-4838. 60(12), s. 1752–1759. doi: 10.1093/cid/civ162.
  • ANDERSEN, METTE RENATE; Frihagen, Frede Jon; Madsen, Jan Erik & Figved, Wender (2015). High complication rate after syndesmotic screw removal. Injury. ISSN 0020-1383. 46(11), s. 2283–2287. doi: 10.1016/j.injury.2015.08.021.
  • Williksen, John Håkon; Husby, Torstein; Hellund, Johan Castberg; Kvernmo, Hebe Desiree; Rosales, Carina & Frihagen, Frede Jon (2015). External fixation and adjuvant pins versus volar locking plate fixation in unstable distal radius fractures: A randomized, controlled study with a 5-year follow-up. Journal of Hand Surgery-American Volume. ISSN 0363-5023. 40(7), s. 1333–1340. doi: 10.1016/j.jhsa.2015.03.008.
  • Torbergsen, Anne Cathrine; Watne, Leiv Otto; Frihagen, Frede Jon; Wyller, Torgeir Bruun; Brugård, Anniken & Mowe, Morten (2015). Vitamin deficiency as a risk factor for delirium. European Geriatric Medicine. ISSN 1878-7649. 6(4), s. 314–318. doi: 10.1016/j.eurger.2014.09.002.
  • Bhandari, Mohit; Devereaux, Philip J.; Einhorn, Thomas A.; Thabane, Lehana; Schemitsch, Emil H. & Koval, Kenneth J. [Vis alle 13 forfattere av denne artikkelen] (2015). Hip fracture evaluation with alternatives of total hip arthroplasty versus hemiarthroplasty (HEALTH): Protocol for a multicentre randomised trial. BMJ Open. ISSN 2044-6055. 5(2). doi: 10.1136/bmjopen-2014-006263.
  • Torbergsen, Anne Cathrine; Watne, Leiv Otto; Wyller, Torgeir Bruun; Frihagen, Frede Jon; Strømsøe, Knut & Bøhmer, Thomas [Vis alle 7 forfattere av denne artikkelen] (2015). Vitamin K1 and 25(OH)D are independently and synergistically associated with a risk for hip fracture in an elderly population: A case control study. Clinical Nutrition. ISSN 0261-5614. 34(1), s. 101–106. doi: 10.1016/j.clnu.2014.01.016.
  • Watne, Leiv Otto; Torbergsen, Anne Cathrine; Conroy, Simon; Engedal, Knut ; Frihagen, Frede & Hjorthaug, Geir Aasmund [Vis alle 11 forfattere av denne artikkelen] (2014). The effect of a pre- and postoperative orthogeriatric service on cognitive function in patients with hip fracture: Randomized controlled trial (Oslo Orthogeriatric Trial). BMC Medicine. ISSN 1741-7015. 12(1). doi: 10.1186/1741-7015-12-63. Fulltekst i vitenarkiv
  • Støen, Ragnhild Øydna; Lofthus, Cathrine Marie; Nordsletten, Lars; Madsen, Jan Erik & Frihagen, Frede Jon (2014). Randomized trial of hemiarthroplasty versus internal fixation for femoral neck fractures: no differences at 6 years. Clinical Orthopaedics and Related Research. ISSN 0009-921X. 472(1), s. 360–367. doi: 10.1007/s11999-013-3245-7.
  • Watne, Leiv Otto; Hall, Roanna J.; Molden, Espen; Ræder, Johan; Frihagen, Frede Jon & MacLullich, Alasdair M.J. [Vis alle 10 forfattere av denne artikkelen] (2014). Anticholinergic activity in cerebrospinal fluid and serum in individuals with hip fracture with and without delirium. Journal of The American Geriatrics Society. ISSN 0002-8614. 62(1), s. 94–102. doi: 10.1111/jgs.12612.
  • Langslet, Ellen; Frihagen, Frede Jon; Opland, Vidar; Madsen, Jan Erik; Nordsletten, Lars & Figved, Wender (2014). Cemented versus Uncemented Hemiarthroplasty for Displaced Femoral Neck Fractures: 5-year Followup of a Randomized Trial. Clinical Orthopaedics and Related Research. ISSN 0009-921X. 472(4), s. 1291–1299. doi: 10.1007/s11999-013-3308-9.
  • Skaara, Helene Engberg; Moksnes, Håvard; Frihagen, Frede Jon & Stuge, Britt (2013). Self-reported and performance-based functional outcomes after surgical repair of proximal hamstring avulsions. American Journal of Sports Medicine. ISSN 0363-5465. 41(11), s. 2577–2584. doi: 10.1177/0363546513499518.
  • Williksen, John Håkon; Frihagen, Frede Jon; Hellund, Johan Castberg; Kvernmo, Helene Ballo & Husby, Torstein (2013). Volar Locking Plates Versus External Fixation and Adjuvant Pin Fixation in Unstable Distal Radius Fractures: A Randomized, Controlled Study. Journal of Hand Surgery-American Volume. ISSN 0363-5023. 38A(8), s. 1469–1476. doi: 10.1016/j.jhsa.2013.04.039.
  • WESTBERG, MARIANNE; Snorrason, Finnur & Frihagen, Frede Jon (2013). Preoperative waiting time increased the risk of periprosthetic infection in patients with femoral neck fracture. Acta Orthopaedica. ISSN 1745-3674. 84(2), s. 124–129. doi: 10.3109/17453674.2013.775044.
  • Wyller, Torgeir Bruun; Watne, Leiv Otto; Torbergsen, Anne Cathrine; Engedal, Knut Arne; Frihagen, Frede Jon & Juliebø, Vibeke [Vis alle 10 forfattere av denne artikkelen] (2012). The effect of a pre- and post-operative orthogeriatric service on cognitive function in patients with hip fracture. The protocol of the Oslo Orthogeriatrics Trial. BMC Geriatrics. ISSN 1471-2318. 12(36). doi: 10.1186/1471-2318-12-36. Fulltekst i vitenarkiv
  • Støen, Ragnhild Øydna; Nordsletten, Lars; Meyer, Haakon E; Frihagen, Frede Jon; Falch, Jan Arvid & Lofthus, Cathrine Marie (2012). Hip fracture incidence is decreasing in the high incidence area of Oslo, Norway. Osteoporosis International. ISSN 0937-941X. 23(10), s. 2527–2534. doi: 10.1007/s00198-011-1888-3.
  • Schizas, Nikos; Weiss, Rudiger; Lian, Øystein Bjerkestrand; Frihagen, Frede Jon; Bahr, Roald & Ackermann, Paul W. (2012). Glutamate receptors in tendinopathic patients. Journal of Orthopaedic Research. ISSN 0736-0266. 30(9), s. 1447–1452. doi: 10.1002/jor.22094.
  • Robstad, Bjørn; Frihagen, Frede Jon & Nordsletten, Lars (2012). The rate of hip osteoarthritis in patients with proximal femoral fractures versus hip contusion. Osteoporosis International. ISSN 0937-941X. 23(3), s. 901–905. doi: 10.1007/s00198-011-1628-8.
  • Bjørnelv, Gudrun Maria Waaler; Frihagen, Frede Jon; Madsen, Jan Erik; Nordsletten, Lars & Aas, Eline (2012). Hemiarthroplasty compared to internal fixation with percutaneous cannulated screws as treatment of displaced femoral neck fractures in the elderly: cost-utility analysis performed alongside a randomized, controlled trial. Osteoporosis International. ISSN 0937-941X. 23(6), s. 1711–1719. doi: 10.1007/s00198-011-1772-1.
  • Figved, Wender; Dahl, Jon; Snorrason, Finnur; Frihagen, Frede Jon; Röhrl, Stephan Maximillian & Madsen, Jan Erik [Vis alle 7 forfattere av denne artikkelen] (2012). Radiostereometric analysis of hemiarthroplasties of the hip - a highly precise method for measurements of cartilage wear. Osteoarthritis and Cartilage. ISSN 1063-4584. 20(1), s. 36–42. doi: 10.1016/j.joca.2011.11.006.
  • Schizas, Nikos; Lian, Øystein; Frihagen, Frede Jon; Engebretsen, Lars; Bahr, Roald & Ackermann, Paul W (2010). Coexistence of up-regulated NMDA receptor 1 and glutamate on nerves, vessels and transformed tenocytes in tendinopathy. Scandinavian Journal of Medicine & Science in Sports. ISSN 0905-7188. 20(2), s. 208–215. doi: 10.1111/j.1600-0838.2009.00913.x.
  • Frihagen, Frede Jon; Figved, Wender; Madsen, Jan Erik; Lofthus, Cathrine Marie; Støen, Ragnhild Øydna & Nordsletten, Lars (2010). Behandling av lårhalsbrudd :. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 130(16), s. 1614–1617. doi: 10.4045/tidsskr.09.1264.
  • Madsen, Jan Erik; Frihagen, Frede Jon & Flugsrud, Gunnar B (2010). Optimal ortopedisk behandling av den hardt skadde pasienten. Kirurgen. ISSN 1504-8888. s. 146–149.
  • Frihagen, Frede Jon; Waaler, Gudrun Maria; Madsen, Jan Erik; Nordsletten, Lars; Aspaas, Silje & Aas, Eline (2010). The cost of hemiarthroplasty compared to that of internal fixation for femoral neck fractures 2-year results involving 222 patients based on a randomized controlled trial. Acta Orthopaedica. ISSN 1745-3674. 81(4), s. 446–452. doi: 10.3109/17453674.2010.492763.
  • Frihagen, Frede Jon (2009). On the diagnosis and treatment of femoral neck fractures. Acta Orthopaedica. ISSN 1745-3674. 80, s. 3–26.
  • Heetveld, Martin J.; Rogmark, Cecilia; Frihagen, Frede Jon & Keating, John (2009). Internal Fixation Versus Arthroplasty for Displaced Femoral Neck Fractures: What is the Evidence? Journal of Orthopaedic Trauma. ISSN 0890-5339. 23(6), s. 395–402.

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  • Nordbø, Jakob Vangen; Frihagen, Frede Jon & Solberg, Lene Bergendal (2020). Fastlegens rolle ved osteoporosebehandling etter brudd. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 17, s. 1738–1739. doi: 10.4045/tidsskr.20.0822.
  • Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Andreasen, Camilla; Brunborg, Cathrine & Hübschle, Lars Michael [Vis alle 17 forfattere av denne artikkelen] (2019). Determinants of Trabecular Bone Score and Vertebral Fracture Status in Women With Fragility Fractures: A Cross-sectional Sub-study of NoFRACT .
  • Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Brunborg, Cathrine; Andreasen, Camilla & Hübschle, Lars Michael [Vis alle 18 forfattere av denne artikkelen] (2019). Individuals with Central Fractures have More Prevalent Vertebral Fractures, Lower Trabecular Bone Score and Lower BMD than Individuals with Peripheral Fractures: a Sub-study of NoFRACT .
  • Hedström, Margareta; Ekström, Wilhelmina; Al-Ani, Amer; Campenfeldt, Pierre; Bartels, Stefan & Gjertsen, Jan-Erik [Vis alle 9 forfattere av denne artikkelen] (2019). High failure rate after internal fixation and beneficial outcome after arthroplasty in treatment of displaced femoral neck fractures in patients between 55 and 70 years. Acta Orthopaedica. ISSN 1745-3674. 90(1), s. 94–95. doi: 10.1080/17453674.2018.1556875.
  • Andreasen, Camilla; G. Rogli, Veronica; Elvenes, Jan; Joakimsen, Ragnar Martin; Borgen, Tove Tveitan & Solberg, Lene Bergendal [Vis alle 13 forfattere av denne artikkelen] (2018). Tromsoporosis - Secondary Fracture Prevention Program resulted in improved adherence to anti-osteoporotic drugs in Tromsø, Norway.
  • Andreasen, Camilla; G. Rogli, Veronica; Elvenes, Jan; Joakimsen, Ragnar Martin; Borgen, Tove Tveitan & Solberg, Lene Bergendal [Vis alle 13 forfattere av denne artikkelen] (2018). Tromsoporosis - Secondary Fracture Prevention Program resulted in high adherence to anti-osteoporotic drugs in Tromsø, Norway.
  • Andreasen, Camilla; G. Rogli, Veronica; Elvenes, Jan; Joakimsen, Ragnar Martin; Borgen, Tove Tveitan & Solberg, Lene Bergendal [Vis alle 13 forfattere av denne artikkelen] (2018). Tromsoporosis - Secondary Fracture Prevention Program resulted in high adherence to anti-osteoporotic drugs in Tromsø, Norway.
  • Pettersen, Petter Morten; Frihagen, Frede Jon; Saltvedt, Ingvild & Figved, Wender (2018). På tide å innføre ortogeriatri i Norge? Tidsskrift for Den norske legeforening. ISSN 0029-2001. 138(14), s. 1320–1321. doi: 10.4045/tidsskr.18.0485.
  • Andreasen, Camilla; Osima, Marit; Rognli, Veronica; Grundel, Dag; Elvenes, Jan & Knutsen, Gunnar [Vis alle 17 forfattere av denne artikkelen] (2017). Tromsoporosis - Adherence to a Secondary Fracture Prevention Program in Tromsø, Norway.
  • Johnsen, Lars Gunnar; Watne, Leiv Otto; Frihagen, Frede Jon; Helbostad, Jorunn L.; Prestmo, Anders & Saltvedt, Ingvild [Vis alle 8 forfattere av denne artikkelen] (2015). Hvorfor ortogeriatri? Tidsskrift for Den norske legeforening. ISSN 0029-2001. 135(6), s. 523–524. doi: 10.4045/tidsskr.15.0188.
  • Frihagen, Frede Jon; Sandnes, Øystein Drolsum & Støen, Ragnhild (2013). POOR CLINICAL RESULTS AFTER INTERNAL FIXATION OF UNDISPLACED FEMORAL NECK FRACTURES. Osteoporosis International. ISSN 0937-941X. 24, s. S200–S200.
  • Frihagen, Frede Jon; Madsen, Jan Erik; Nordsletten, Lars; Lofthus, Cathrine Marie & Støen, Ragnhild Øydna (2013). HEMIARTHROPLASTY OR INTERNAL FIXATION FOR DISPLACED FEMORAL NECK FRACTURES IN THE ELDERLY: 6 YEAR FOLLOW UP OF AN RCT. Osteoporosis International. ISSN 0937-941X. 24, s. S135–S135.
  • Frihagen, Frede Jon; Støen, Ragnhild Øydna; Hygen, Hans Olav; Nordsletten, Lars & Lofthus, Cathrine Marie (2011). ICE AND SNOW IN OSLO GAVE A MARKED INCREASE IN DISTAL RADIUS FRACTURES, BUT NOT IN HIP FRACTURES. Osteoporosis International. ISSN 0937-941X. 22, s. 159–160.
  • Frihagen, Frede Jon; Figved, Wender; Madsen, Jan Erik; Lofthus, Cathrine Marie; Støen, Ragnhild Øydna & Nordsletten, Lars (2010). F. Frihagen og medarbeidere svarer: :. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 130(20).
  • Hagen, Gunhild; Wisløff, Torbjørn; Falch, Jan; Lofthus, Cathrine; Frihagen, Frede & Wensaas, Knut-Arne [Vis alle 10 forfattere av denne artikkelen] (2011). Efficacy and cost-effectiveness of alendronate for the prevention of fractures in postmenopausal women in Norway. Nasjonalt kunnskapssenter for helsetjenesten. ISSN 978-82-8121-406-4.

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Publisert 1. sep. 2020 14:17 - Sist endret 1. sep. 2020 14:17