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  1. Article ; Online: Intra-Articular Osteotomy of the Distal Radius with the Use of Inexpensive In-House 3D Printed Surgical Guides and Arthroscopy: A Case Report.

    Temmesfeld, Max Joachim / Hauksson, Ingi Thor / Mørch, Thale

    JBJS case connector

    2020  Volume 10, Issue 1, Page(s) e0424

    Abstract: Case: An 18-year-old man complained about persistent wrist pain and functional impairment due to intra-articular malunion, 1 year after volar plating of a distal radius fracture. We designed and produced patient-specific surgical guides (PSSGs) in-house ...

    Abstract Case: An 18-year-old man complained about persistent wrist pain and functional impairment due to intra-articular malunion, 1 year after volar plating of a distal radius fracture. We designed and produced patient-specific surgical guides (PSSGs) in-house with a benchtop three-dimensional printer to perform an arthroscopy-assisted intra-articular osteotomy of the radial column without dorsal arthrotomy. The procedure was performed without complications. After 1 year, there was no osteoarthritis and the patient's wrist function was practically normalized.
    Conclusions: Virtual surgical planning, design, and production of PSSGs were feasible without consultation of an external medical engineering company and without dorsal arthrotomy.
    MeSH term(s) Adolescent ; Arthroscopy ; Humans ; Male ; Osteotomy/methods ; Patient-Specific Modeling ; Printing, Three-Dimensional ; Radius Fractures/surgery ; Reoperation ; Wrist Injuries/surgery
    Language English
    Publishing date 2020-01-02
    Publishing country United States
    Document type Case Reports ; Journal Article
    ISSN 2160-3251
    ISSN (online) 2160-3251
    DOI 10.2106/JBJS.CC.18.00424
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Does a surgical helmet provide protection against aerosol transmitted disease?

    Temmesfeld, Max Joachim / Jakobsen, Rune Bruhn / Grant, Peter

    Acta orthopaedica

    2020  Volume 91, Issue 5, Page(s) 538–542

    Abstract: Background and purpose - The COVID-19 pandemic caused by infection with SARS-CoV-2 has led to a global shortage of personal protective equipment (PPE). Various alternatives to ordinary PPE have been suggested to reduce transmission, which is primarily ... ...

    Abstract Background and purpose - The COVID-19 pandemic caused by infection with SARS-CoV-2 has led to a global shortage of personal protective equipment (PPE). Various alternatives to ordinary PPE have been suggested to reduce transmission, which is primarily through droplets and aerosols. For many years orthopedic surgeons have been using surgical helmets as personal protection against blood-borne pathogens during arthroplasty surgery. We have investigated the possibility of using the Stryker Flyte surgical helmet as a respiratory protective device against airborne- and droplet-transmitted disease, since the helmet shares many features with powered air-purifying respirators.Materials and methods - Using an aerosol particle generator, we determined the filtration capacity of the Stryker Flyte helmet by placing particle counters measuring the concentrations of 0.3, 0.5, and 5 µm particles inside and outside of the helmet.Results - We found that the helmet has insufficient capacity for filtrating aerosol particles, and, for 0.3 µm sized particles, we even recorded an accumulation of particles inside the helmet.Interpretation - We conclude that the Stryker Flyte surgical helmet should not be used as a respiratory protective device when there is a risk for exposure to aerosol containing SARS-CoV-2, the virus causing COVID-19, in accordance with the recommendation from the manufacturer.
    MeSH term(s) Aerosols/adverse effects ; COVID-19/transmission ; Equipment Design ; Head Protective Devices ; Humans ; Infectious Disease Transmission, Patient-to-Professional/prevention & control ; Orthopedic Procedures ; Orthopedics ; Particle Size ; Personal Protective Equipment
    Chemical Substances Aerosols
    Keywords covid19
    Language English
    Publishing date 2020-06-23
    Publishing country England
    Document type Evaluation Study ; Journal Article
    ZDB-ID 2180677-9
    ISSN 1745-3682 ; 1745-3674
    ISSN (online) 1745-3682
    ISSN 1745-3674
    DOI 10.1080/17453674.2020.1771525
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Uk I Zs.99: Show issues Location:
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  3. Article ; Online: Does a surgical helmet provide protection against aerosol transmitted disease?

    Max Joachim Temmesfeld / Rune Bruhn Jakobsen / Peter Grant

    Acta Orthopaedica , Vol 0, Iss 0, Pp 1-

    2020  Volume 5

    Abstract: Background and purpose — The COVID-19 pandemic caused by infection with SARS-CoV-2 has led to a global shortage of personal protective equipment (PPE). Various alternatives to ordinary PPE have been suggested to reduce transmission, which is primarily ... ...

    Abstract Background and purpose — The COVID-19 pandemic caused by infection with SARS-CoV-2 has led to a global shortage of personal protective equipment (PPE). Various alternatives to ordinary PPE have been suggested to reduce transmission, which is primarily through droplets and aerosols. For many years orthopedic surgeons have been using surgical helmets as personal protection against blood-borne pathogens during arthroplasty surgery. We have investigated the possibility of using the Stryker Flyte surgical helmet as a respiratory protective device against airborne- and droplet-transmitted disease, since the helmet shares many features with powered air-purifying respirators. Materials and methods — Using an aerosol particle generator, we determined the filtration capacity of the Stryker Flyte helmet by placing particle counters measuring the concentrations of 0.3, 0.5, and 5 µm particles inside and outside of the helmet. Results — We found that the helmet has insufficient capacity for filtrating aerosol particles, and, for 0.3 µm sized particles, we even recorded an accumulation of particles inside the helmet. Interpretation — We conclude that the Stryker Flyte surgical helmet should not be used as a respiratory protective device when there is a risk for exposure to aerosol containing SARS-CoV-2, the virus causing COVID-19, in accordance with the recommendation from the manufacturer
    Keywords Orthopedic surgery ; RD701-811 ; covid19
    Subject code 620
    Language English
    Publishing date 2020-06-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: Does a surgical helmet provide protection against aerosol transmitted disease?

    Temmesfeld, Max Joachim / Jakobsen, Rune Bruhn / Grant, Peter

    Acta Orthop

    Abstract: Background and purpose - The COVID-19 pandemic caused by infection with SARS-CoV-2 has led to a global shortage of personal protective equipment (PPE). Various alternatives to ordinary PPE have been suggested to reduce transmission, which is primarily ... ...

    Abstract Background and purpose - The COVID-19 pandemic caused by infection with SARS-CoV-2 has led to a global shortage of personal protective equipment (PPE). Various alternatives to ordinary PPE have been suggested to reduce transmission, which is primarily through droplets and aerosols. For many years orthopedic surgeons have been using surgical helmets as personal protection against blood-borne pathogens during arthroplasty surgery. We have investigated the possibility of using the Stryker Flyte surgical helmet as a respiratory protective device against airborne- and droplet-transmitted disease, since the helmet shares many features with powered air-purifying respirators.Materials and methods - Using an aerosol particle generator, we determined the filtration capacity of the Stryker Flyte helmet by placing particle counters measuring the concentrations of 0.3, 0.5, and 5 µm particles inside and outside of the helmet.Results - We found that the helmet has insufficient capacity for filtrating aerosol particles, and, for 0.3 µm sized particles, we even recorded an accumulation of particles inside the helmet.Interpretation - We conclude that the Stryker Flyte surgical helmet should not be used as a respiratory protective device when there is a risk for exposure to aerosol containing SARS-CoV-2, the virus causing COVID-19, in accordance with the recommendation from the manufacturer.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #612339
    Database COVID19

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  5. Article ; Online: Surgical helmets can be converted into efficient disinfectable powered air-purifying respirators.

    Temmesfeld, Max Joachim / Gorzkowska-Sobas, Agnieszka Anna / Hedlund, Kenny / Øyen, Martin Øhlund / Kanten, Lars / Grant, Peter / Jakobsen, Rune B

    American journal of infection control

    2021  Volume 50, Issue 6, Page(s) 624–630

    Abstract: Background: Filtering facepiece respirators often fail to provide sufficient protection due to a poor fit. Powered air-purifying respirators (PAPRs) are not designed for healthcare personnel, and are challenging to disinfect. Surgical helmets (SH) are ... ...

    Abstract Background: Filtering facepiece respirators often fail to provide sufficient protection due to a poor fit. Powered air-purifying respirators (PAPRs) are not designed for healthcare personnel, and are challenging to disinfect. Surgical helmets (SH) are available in many United States hospitals but do not provide respiratory protection. Several modifications to SH have been suggested, but none are sufficiently compliant with safety and efficiency standards. The purpose of this investigation was the development of a filter adaptor, which converts SHs into efficient, safe, and disinfectable PAPRs.
    Methods: Four critical features were investigated close to regulatory requirements: total inward leakage of particles, CO
    Results: The average total inward leakage in the 2 independent tests were 0.005% and 0.01%. CO
    Discussion: The modified SH provides several hundred times better protection than FFP-3 masks.
    Conclusions: Surgical helmets can be modified into safe, efficient, and disinfectable PAPRs, suitable for HCP and the operating room in particular. They can play a role in the preparedness for upcoming events requiring efficient respiratory protection.
    MeSH term(s) Carbon Dioxide ; Head Protective Devices ; Humans ; Masks ; Occupational Exposure/prevention & control ; Respiratory Protective Devices ; United States
    Chemical Substances Carbon Dioxide (142M471B3J)
    Language English
    Publishing date 2021-12-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 392362-9
    ISSN 1527-3296 ; 0196-6553
    ISSN (online) 1527-3296
    ISSN 0196-6553
    DOI 10.1016/j.ajic.2021.12.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1773: Show issues Location:
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    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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