Paul Johan Høl's picture

Paul Johan Høl

Senior Engineer, Researcher and head of Biomatlab
  • E-mailPaul.Hol@uib.no
  • Phone+47 55 58 54 43
  • Visitor Address
    Biomatlab, Laboratoriebygget
    5021 Bergen
  • Postal Address
    Postboks 7804
    5020 Bergen

My research activities focus on biomaterials, i.e. artificial materials used in reconstructive surgery, which may have huge clinical impact in terms of usage and diversity. The associated research topics span from applied research to basic. The activities are designed to involve biomechanical, biological and chemical effects of artificial materials used on humans. The activity is based on clinical aspects, and is therefore translational; from clinic to laboratory. The biomaterial laboratory (Biomatlab) has since 2009 been situated in the laboratory facilities at Haukeland University Hospital and Department of Clinical Medicine, UiB, which provides a unique opportunity to connect basic research with clinical activities in the field of biomaterials.
There is a strong collaboration with the Norwegian Arthroplasty Register in Bergen, which represents an important body for identifying longevity of joint replacements. 
I have extensive experience in clinical and biological issues, which started with the analysis of trace metals in lung tissue in the Master thesis and continued with my PhD work on the chemical analysis of a large clinical material taken from patients with dental amalgam fillings.
The activities that were started in the postdoctoral period, was further developed under my stipend from Bergen Medical Research Foundation (2010-2013). My project deals with the clinical and biological effects of implants that remain in the body. This is performed by characterize the degradation products in tissue and blood from patients with different types of implants, and correlate with clinical analysis, such as effects on bone cells and immune system.
The ongoing and planned activities will broaden the knowledge of biological and clinical consequences of artificial biomaterials, which can be used in developing new and safer materials.

  • Show author(s) (2024). Isolation of TiNbN wear particles from a coated metal-on-metal bearing: Morphological characterization and in vitro evaluation of cytotoxicity in human osteoblasts. Journal of Biomedical Materials Research. Part B - Applied biomaterials.
  • Show author(s) (2023). Does precoating of the NexGen Option tibial component lower the risk of loosening? 10 years follow up from the Norwegian Arthroplasty Register 2012-2021.
  • Show author(s) (2023). Cementing techniques for total ktnee arthroplasty in Norwegian hospitals; a questionnaire-based study. BMC Musculoskeletal Disorders.
  • Show author(s) (2023). Bruk av blodtomhet ved totalprotese i kne- 3 års oppfølging (2018-2021) med data fra Nasjonalt register for leddproteser.
  • Show author(s) (2022). Similarly low-blood metal ion levels at 10-years follow-up of total hip arthroplasties with Oxinium, CoCrMo, and stainless steel femoral heads. Data from a randomized clinical trial. Journal of Biomedical Materials Research. Part B - Applied biomaterials. 1-8.
  • Show author(s) (2022). Polyethylene Wear In Total Hip Arthroplasty; Comparing Oxinium And CoCr Femoral Heads Using Radiostereometry With 10 Years Follow-Up.
  • Show author(s) (2022). Polycrystalline diamond coating on orthopedic implants: Realization and role of surface topology and chemistry in adsorption of proteins and cell proliferation. ACS Applied Materials & Interfaces. 44933-44946.
  • Show author(s) (2022). Initial Stability Of Surface vs Full Cemented Tibial Components Under Cyclic Loading.
  • Show author(s) (2022). Inflammatory tissue reactions around aseptically loose cemented hip prostheses: A retrieval study of the Spectron EF stem with Reflection All‐Poly acetabular cup. Journal of Biomedical Materials Research. Part B - Applied biomaterials. 1624-1636.
  • Show author(s) (2021). Polyethylene wear in total hip arthroplasty; comparing Oxinium and CoCr femoral heads using radiostereometry with 10 years follow-up.
  • Show author(s) (2021). Metallionenivåer i blod fra pasienter med metall-mot-metall-hofteprotese. Tidsskrift for Den norske legeforening. 31-36.
  • Show author(s) (2020). Strength of side-to-side and step-cut repairs in tendon transfers: biomechanical testing of porcine flexor tendons. Journal of Hand Surgery (European Volume). 1-5.
  • Show author(s) (2020). Metallionenivåer i blod etter 10 år med hofteproteser med ulike hodematerialer.
  • Show author(s) (2020). En spørreundersøkelse om sementeringsteknikker som brukes ved total kneprotesekirurgi ved norske sykehus.
  • Show author(s) (2019). Strength of Pulvertaft modifications: tensile testing of porcine flexor tendons. Journal of Hand Surgery (European Volume). 795-799.
  • Show author(s) (2019). Metals in orthopaedic implants: Mechanical, chemical and biological properties of titanium and stainless steel implants .
  • Show author(s) (2019). Mekanismer for aseptisk løsning av sementert Spectron EF hoftestamme med Reflection kopp - en retrievalstudie.
  • Show author(s) (2019). Kontrollen av medisinske implantater kan bli bedre. Dagens medisin. 1 pages.
  • Show author(s) (2019). Impact of TiNbN wear particles on osteoblastic differentiation capacity and induction of inflammatory reactions.
  • Show author(s) (2019). Corrosion and metal release from overlapping arterial stents under mechanical and electrochemical stress - An experimental study. Journal of The Mechanical Behavior of Biomedical Materials. 31-35.
  • Show author(s) (2019). Cementing technique for primary knee arthroplasty: a scoping review. Acta Orthopaedica. 582-589.
  • Show author(s) (2018). Novel titanium antigens and assessment of immune activation.
  • Show author(s) (2018). Novel nanoparticulate and ionic titanium antigens for hypersensitivity testing. International Journal of Molecular Sciences. 1-18.
  • Show author(s) (2018). Metallnivå i blod hos pasienter med hofteprotese.
  • Show author(s) (2018). Label-free monitoring of uptake and toxicity of endoprosthetic wear particles in human cell cultures. International Journal of Molecular Sciences. 1-14.
  • Show author(s) (2018). An individual patient outcome tool for joint replacement patients. Studies in Health Technology and Informatics. 129-132.
  • Show author(s) (2018). An individual patient outcome tool for joint replacement patients.
  • Show author(s) (2017). The impact of metal ion exposure on the cellular behavior of human osteoblasts and PBMCs: In vitro analyses of osteolytic processes. Materials. 1-15.
  • Show author(s) (2017). Impact of maternal selenium status on infant outcome during the first 6 months of life. Nutrients.
  • Show author(s) (2017). Early aseptic loosening of a mobile-bearing total knee replacement: A case-control study with retrieval analyses. Acta Orthopaedica. 77-83.

More information in national current research information system (CRIStin)

Bergen Implant Retrieval center for Implants

My on-going project is about improving performance and safety of clinical biomaterials. 

Bergen retrieval center for implants is collecting and analyzing joint prostheses that have failed due to aseptic loosening, often in combination with osteolysis or other immunological reactions.

I have specialised in trace element analysis, mainly on clinically related samples. Main elements of interest are Co, Cr, Zr, Mo, Ni and Ti measured by ICP-MS.

Read more: https://www.researchgate.net/project/Bergen-Retrieval-Center-for-Implants