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Jan-Erik Gjertsen's picture

Jan-Erik Gjertsen

Associate Professor
  • E-mailJan-Erik.Gjertsen@uib.no
  • Phone+47 957 80 782
  • Visitor Address
    Haukeland Universitetssykehus Laboratoriebygget, 7. etg. Heis øst
  • Postal Address
    Postboks 7804
    5020 Bergen
Academic article
  • Show author(s) 2021. Prevalence, causes and impact of musculoskeletal impairment in Malawi: A national cluster randomized survey. PLOS ONE. 1-15.
  • Show author(s) 2020. Timing of hip hemiarthroplasty and the influence on prosthetic joint infection. PLOS ONE. 1-9.
  • Show author(s) 2020. Surgical site infection after hip fracture – mortality and risk factors: an observational cohort study of 1,709 patients. Acta Orthopaedica. 347-352.
  • Show author(s) 2020. Outcome at 1 year in patients with femoral shaft fractures treated with intramedullary nailing or skeletal traction in a low-income country: a prospective observational study of 187 patients in Malawi. Acta Orthopaedica. 1-8.
  • Show author(s) 2020. Operative approach influences functional outcome after DAIR for infected total hip arthroplasty. The Bone & Joint Journal. 1662-1669.
  • Show author(s) 2020. No association between osteoporosis and AO classification of distal radius fractures: an observational study of 289 patients. BMC Musculoskeletal Disorders. 1-5.
  • Show author(s) 2020. Hip fracture treatment in Norway: deviation from evidence-based treatment guidelines: data from the Norwegian Hip Fracture Register. Bone & Joint Open. 644-653.
  • Show author(s) 2020. Do direct oral anticoagulants (DOACs) cause delayed surgery, longer length of hospital stay, and poorer outcome for hip fracture patients? European Geriatric Medicine. 563-569.
  • Show author(s) 2020. Compliance with national guidelines for antibiotic prophylaxis in hip fracture patients: A quality assessment study of 13 329 patients in the Norwegian Hip Fracture Register. BMJ Open. 1-8.
  • Show author(s) 2020. Cognitive impairment influences the risk of reoperation after hip fracture surgery: results of 87,573 operations reported to the Norwegian Hip Fracture Register. Acta Orthopaedica. 146-151.
  • Show author(s) 2020. Cemented or uncemented hemiarthroplasty for femoral neck fracture? Data from the Norwegian Hip Fracture Register. Clinical Orthopaedics and Related Research. 90-100.
  • Show author(s) 2020. CORR Insights: Is the Survivorship of Birmingham Hip Resurfacing Better Than Selected Conventional Hip Arthroplasties in Men Younger Than 65 Years of Age? A Study from the Australian Orthopaedic Association National Joint Replacement Registry. Clinical Orthopaedics and Related Research. 2637-2639.
  • Show author(s) 2019. Validation of orthopaedic surgeons' assessment of cognitive function in patients with acute hip fracture. BMC Musculoskeletal Disorders. 8 pages.
  • Show author(s) 2019. Validation of chichewa short musculoskeletal function assessment (SMFA) questionnaire: A cross-sectional study. Malawi Medical Journal. 65-70.
  • Show author(s) 2019. Reduced revision risk for dual-mobility cup in total hip replacement due to hip fracture: A matched-pair analysis of 9,040 cdases from the Nordic Arthroplasty Register Association (NARA). Journal of Bone and Joint Surgery. American volume. 1278-1285.
  • Show author(s) 2019. Post-Fracture Risk Assessment: Target The Centrally Sited Fractures First! A Substudy of NoFRACT. Journal of Bone and Mineral Research. 2036-2044.
  • Show author(s) 2019. Perioperative, short, and long-term mortality related to fixation in primary total hip arthroplasty: a study of 79,557 patients in the Norwegian Arthroplasty Register. Acta Orthopaedica. 1-8.
  • Show author(s) 2019. Outcome of revision surgery for infection after total knee arthroplasty: Results of 3 surgical strategies. Journal of bone and joint surgery reviews (JBJS Reviews). 1-10.
  • Show author(s) 2019. Optimal duration of anticoagulant thromboprophylaxis in total hip arthroplasty: new evidence in 55,540 patients with osteoarthritis from the Nordic Arthroplasty Register Association (NARA) group. Acta Orthopaedica. 298-305.
  • Show author(s) 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. 1-8.
  • Show author(s) 2019. Is there a weekend effect after hip fracture surgery? A study of 74,410 hip fractures reported to the Norwegian Hip Fracture Register. Acta Orthopaedica. 63-68.
  • Show author(s) 2019. High prevalence of vertebral fractures and low trabecular bone score in patients with fragility fractures: A cross-sectional sub-study of NoFRACT. Bone. 14-21.
  • Show author(s) 2019. Fixation, sex and age: highest risk of revision for uncemented stems in elderly women- data from 66,995 primary total hip arthroplasties in the Norwegian arthroplasty register. Acta Orthopaedica. 1-10.
  • Show author(s) 2019. Fast track hip fracture care and mortality – an observational study of 2230 patients. BMC Musculoskeletal Disorders. 10 pages.
  • Show author(s) 2019. Does time from fracture to surgery affect mortality and intraoperative medical complications for hip fracture patients? The Bone & Joint Journal. 1129-1137.
  • Show author(s) 2019. Determinants of trabecular bone score and prevalent vertebral fractures in women with fragility fractures: a cross-sectional sub-study of NoFRACT. Osteoporosis International. 505-514.
  • Show author(s) 2019. Cementing technique for primary knee arthroplasty: a scoping review. Acta Orthopaedica. 582-589.
  • Show author(s) 2018. The rise in road traffic injuries in Lilongwe, Malawi: A snapshot of the growing epidemic of trauma in low income countries. International Journal of Surgery Open. 55-60.
  • Show author(s) 2018. Surgeon's experience level and risk of reoperation after hip fracture surgery: an observational study on 30,945 patients in the Norwegian Hip Fracture Register 2011-2015. Acta Orthopaedica. 496-502.
  • Show author(s) 2018. Nail or plate fixation for A3 trochanteric hip fractures: A systematic review of randomised controlled trials. Injury. 1-5.
  • Show author(s) 2018. More reoperations for periprosthetic fracture after cemented hemiarthroplasty With polished taper-slip stems than after anatomical and straight stems in the treatment of hip fractures. . The Bone & Joint Journal. 1565-1571.
  • Show author(s) 2018. Low-molecular-weight heparin for hip fracture patients treated with osteosynthesis: should thromboprophylaxis start before or after surgery? An observational study of 45,913 hip fractures reported to the Norwegian Hip Fracture Register. Acta Orthopaedica. 615-621.
  • Show author(s) 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. 13 pages.
  • Show author(s) 2017. Validation and reliability of the Chichewa translation of the EQ-5D quality of life questionnaire in adults with orthopaedic injuries in Malawi. Malawi Medical Journal. 84-88.
  • Show author(s) 2017. Using national hip fracture registries and audit databases to develop an international perspective. Injury. 2174-2179.
  • Show author(s) 2017. Posterior approach compared to Direct lateral approach resulted in better patient-reported outcome after hemiarthroplsty for femoral neck fracture. Acta Orthopaedica. 29-34.
  • Show author(s) 2017. Improved outcome after hip fracture surgery in Norway: 10-year results from the Norwegian Hip Fracture Register. Acta Orthopaedica. 505-511.
  • Show author(s) 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. 53-58.
  • Show author(s) 2016. Quality of life following hip fractures: Results from the Norwegian hip fracture register. BMC Musculoskeletal Disorders. 8 pages.
  • Show author(s) 2016. Postoperative start compared to preoperative start of low-molecular-weight heparin increases mortality in patients with femoral neck fractures: An observational study of 20,241 hemiprostheses reported to the Norwegian Hip Fracture Register. Acta Orthopaedica. 48-54.
  • Show author(s) 2016. Posterior approach compared to direct lateral approach resulted in better patient-reported outcome after hemiarthroplasty for femoral neck fracture: 20,908 patients from the Norwegian Hip Fracture Register. Acta Orthopaedica. 29-34.
  • Show author(s) 2016. Outcomes of unicompartmental knee arthroplasty after aseptic revision to total knee arthroplasty: a comparative study of 768 TKAs and 578 UKAs revised to TKAs from the norwegian arthroplasty register (1994 to 2011). Journal of Bone and Joint Surgery. American volume. 431-440.
  • Show author(s) 2015. Secondary patella resurfacing in painful non-resurfaced total knee arthroplasties: A study of survival and clinical outcome from the Norwegian Arthroplasty Register (1994–2011). International Orthopaedics. 8 pages.
  • Show author(s) 2014. Posterior approach and uncemented stems increases the risk of reoperation after hemiarthroplasties in elderly hip fracture patients. Acta Orthopaedica. 18-25.
  • Show author(s) 2014. Increased risk of revision with hamstring tendon grafts compared with patellar tendon grafts after anterior cruciate ligament reconstruction: A study of 12,643 patients from the norwegian cruciate ligament registry, 2004-2012. American Journal of Sports Medicine. 285-291.
  • Show author(s) 2014. Hemiarthroplasties after hip fractures in Norway and Sweden: A collaboration between the Norwegian and Swedish national registries. HIP International. 223-230.
  • Show author(s) 2013. TRIGEN INTERTAN Intramedullary Nail Versus Sliding Hip Screw: A Prospective, Randomized Multicenter Study on Pain, Function, and Complications in 684 Patients with an Intertrochanteric or Subtrochanteric Fracture and One Year of Follow-up. Journal of Bone and Joint Surgery. American volume. 200-208.
  • Show author(s) 2013. Sliding hip screw versus IM nail in reverse oblique trochanteric and subtrochanteric fractures. A study of 2716 patients in the Norwegian Hip Fracture Register. Injury. 735-742.
  • Show author(s) 2013. Perioperative mortality in hip fracture patients treated with cemented and uncemented hemiprosthesis: a register study of 11,210 patients. International Orthopaedics. 1135-1140.
  • Show author(s) 2013. Intramedullary nails result in more reoperations than sliding hip screws in two-part intertrochanteric fractures. Clinical Orthopaedics and Related Research. 1379-1386.
  • Show author(s) 2012. More re-operations after uncemented than cemented hemiarthroplasty used in the treatment of displaced fractures of the femoral neck: an observational study of 11,116 hemiarthroplasties from a national register. Journal of Bone and Joint Surgery (JBJS).
  • Show author(s) 2011. Clinical outcome after undisplaced femoral neck fractures. Acta Orthopaedica. 268-274.
  • Show author(s) 2010. Internal screw fixation compared with bipolar hemiarthroplasty for treatment of displaced femoral neck fractures in elderly patients. Journal of Bone and Joint Surgery. American volume. 619-628.
  • Show author(s) 2008. The Norwegian Hip Fracture Register - Experiences after the first 2 years and 15,576 reported operations. Acta Orthopaedica. 583-593.
  • Show author(s) 2008. Patient satisfaction, pain, and quality of life 4 months after displaced femoral neck fractures - A comparison of 663 fractures treated with internal fixation and 906 with bipolar hemiarthroplasty reported to the Norwegian Hip Fracture Register. Acta Orthopaedica. 594-601.
  • Show author(s) 2006. Hip fracture implants increase serum metal levels. Scandinavian Journal of Clinical and Laboratory Investigation.
Lecture
  • Show author(s) 2019. Retrospektiv pilotstudie for komplikasjoner ved ustabile trokantære frakturer operert med margnagle eller protese.
Academic lecture
  • Show author(s) 2020. Effekt av etterlevelse av retningslinjer for behandling av dislokerte lårhalsbrudd.
  • Show author(s) 2020. Betydelig variasjon i etterlevelse etter retningslinjer for behandling av dislokerte lårhalsbrudd.
  • Show author(s) 2019. Sykehusegenskaper påvirker overlevelse etter hoftebrudd.
  • Show author(s) 2018. Revision of infected total knee arthroplasty: Do surgical strategies matter?
  • Show author(s) 2018. Result of revision surgery for infected total knee arthroplasty. Do surgical strategies matter?
  • Show author(s) 2018. Outcome of revision surgery for infected total knee arthroplasty: Do surgical strategies matter?
  • Show author(s) 2017. Resultater ved revisjon for infisert kneprotese. En observasjons studie fra Nasjonalt Register for Leddproteser (1994-2016).
  • Show author(s) 2017. New Trauma is the Most Common Cause of Revision after primary anterior cruciate ligament reconstruction – a study from the Norwegian Knee Ligament Registry 2004–2015.
  • Show author(s) 2016. The outcome of unicompartmental knee arthroplasties after aseptic revision into total knee arthroplasties. A comparative study of 768 total knees and 578 uni knees revised to total knees reported to Norwegian Arthroplasty Register (1994-2011.
  • Show author(s) 2016. The outcome of unicompartmental knee arthroplasties after aseptic revision into total knee arthroplasties. A comparative study of 768 total knees and 578 uni knees revised to total knees reported to Norwegian Arthroplasty Register (1994-2011).
  • Show author(s) 2016. The outcome of unicompartmental knee arthroplasties after aseptic revision into total knee arthroplasties. A comparative study of 768 total knees and 578 uni knees revised to total knees reported to Norwegian Arthroplasty Register (1994-2011).
  • Show author(s) 2016. New trauma is the most common cause of revision after primary anterior cruciate ligament reconstruction - a study from the Norwegian knee ligament registry 2004-2015.
  • Show author(s) 2015. The outcome of unicompartmental knee arthroplastis after aseptic revision into total knee arthroplasties.
  • Show author(s) 2015. The Outcome of unicompartmental knee arthroplasties after aseptic revision into total knee arthroplasties. A comparative study of 768 total and 578 uni-knees revised to total knees reported to the Norwegian Arthroplasty Register (1994-2011).
  • Show author(s) 2015. Sammenligning av 768 total- og 578 uni-kneproteser reviderte til total kneproteser fra Nasjonalt Register for Leddproteser (1994-2011).
  • Show author(s) 2015. Addition of patella Component in painful non-resurfaced TKAs; does it helps?
  • Show author(s) 2014. Revisjon av total kneprotese uten patellakomponent med kun innsetting av patellakomponent.
  • Show author(s) 2014. Increased risk of revision with hamstring graft compared to patellar graft after anterior cruciate ligament reconstruction; a study of 12,643 cases from the Norwegian Cruciate Ligament Registry 2004–2012.
Editorial
  • Show author(s) 2020. Valg av protese ved lårhalsbrudd. Tidsskrift for Den norske legeforening. 1 pages.
  • Show author(s) 2019. Should Total Hip Arthroplasty Be Used for Hip Fracture? New England Journal of Medicine. 2261-2262.
Reader opinion piece
  • Show author(s) 2013. Reply to Letter to the Editor: Intramedullary Nails Result in More Reoperations Than Sliding Hip Screws in Two-part Intertrochanteric Fractures. Clinical Orthopaedics and Related Research. 1735-1735.
Letter to the editor
  • Show author(s) 2020. Reply to the Letter to the Editor: Cemented or uncemented Hemiarthroplasty for femoral neck fracture? Data from the Norwegian Hip Fracture Register. Clinical Orthopaedics and Related Research. 687-689.
  • Show author(s) 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. 94-95.
  • Show author(s) 2014. Re: a statistical analysis of ankle prosthesis from the Norwegian Arthroplasty Register. Archives of Orthopaedic and Trauma Surgery. 17-18.
  • Show author(s) 2013. Authors' reply Cobb correspondence re: J-E. Gjertsen, S. A. Lie, T. Vinje, et al. More re-operations after uncemented than cemented hemiarthroplasty used in the treatment of displaced fractures of the femoral neck: An observational study of 11 116 hemiarthroplasties from a national register. J Bone Joint Surg [Br] 2012;94-B:1113-1119. The Bone & Joint Journal. 862.
Doctoral dissertation
  • Show author(s) 2009. Surgical treatment of hip fractures in Norway.
Academic chapter/article/Conference paper
  • Show author(s) 2016. New trauma is the most common cause of revision after primary anterior cruciate ligament reconstruction - a study from the Norwegian knee ligament registry 2004-2015. 1 pages.
Other
  • Show author(s) 2013. Økt risiko for revisjon med hamstringsgraft sammenlignet med patellarsenegraft ved primær fremre korsbåndsrekonstruksjon; en studie av 12 643 operasjoner fra nasjonalt korsbåndsregister 2004-2012. 112.
Abstract
  • Show author(s) 2017. New Trauma is the Most Common Cause of Revision after primary anterior cruciate ligament reconstruction – a study from the Norwegian Knee Ligament Registry 2004–2015. Arthroscopy: The Journal of Arthroscopy And Related. e139.
  • Show author(s) 2014. Increased risk of revision with hamstring graft compared to patellar graft after anterior cruciate ligament reconstruction; a study of 12,643 cases from the Norwegian Cruciate Ligament Registry 2004–2012. Knee Surgery, Sports Traumatology, Arthroscopy. S22-S23.
Poster
  • Show author(s) 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 .
  • Show author(s) 2019. Determinants of Trabecular Bone Score and Vertebral Fracture Status in Women With Fragility Fractures: A Cross-sectional Sub-study of NoFRACT .
Errata
  • Show author(s) 2020. Correction to: Do direct oral anticoagulants (DOACs) cause delayed surgery, longer length of hospital stay, and poorer outcome for hip fracture patients? (European Geriatric Medicine, (2020), 10.1007/s41999-020-00319-w). European Geriatric Medicine.
Academic literature review
  • Show author(s) 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. 1-8.
Article in business/trade/industry journal
  • Show author(s) 2020. Hip fracture treatment in Norway deviation from evidence-based treatment guidelines: data from the Norwegian Hip Fracture Register, 2014 to 2018. Bone & Joint Open. 644-653.

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