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  • 1.
    Ramstrand, Nerrolyn
    et al.
    Högskolan i Jönköping, Hälsohögskolan, HHJ. Ortopedteknisk plattform. Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering.
    Ramstrand, Simon
    Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. Ortopedteknisk plattform.
    AAOP State-of-the-Science Evidence Report: The Effect of Ankle-Foot Orthoses on Balance - A Systematic Review.2010Ingår i: Journal of prosthetics and orthotics, ISSN 1040-8800, E-ISSN 1534-6331, Vol. 22, nr 4S, s. 4-23Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    Ankle-foot orthoses (AFOs) are typically designed to limit the motion of the ankle joint in one or more planes. Given that balance may be compromised when joint range of motion is restricted, an understanding of the relative effects of AFOs on balance performance is clinically relevant. The aim of this systematic review was to evaluate existing evidence related to the effects of AFOs on static and dynamic balance. A search of appropriate medical databases was conducted, and 37 articles were found to satisfy predetermined inclusion criteria. Articles were categorized under two main areas: those investigating the use of AFOs designed for sporting applications (sports orthoses, 18 studies) and those investigating orthoses that are intended to facilitate ambulation in subjects with locomotor disorders (ambulatory orthoses, 19 studies). Combined results suggest that sports orthoses may facilitate certain aspects of balance in subjects with ankle instability and that balance is unlikely to be compromised when able-bodied subjects wear AFOs as a prophylactic measure. No evidence exists to suggest that any one design of sports orthosis is superior to another in terms of performance on balance measures. Results of studies involving ambulatory orthoses indicated that their effects on balance were largely dependent on the design characteristics of the orthosis used. Rigid AFOs seemed to facilitate static balance tasks, although the level of confidence in this outcome was relatively low. Under dynamic conditions, rigid AFOs seemed to compromise balance for the tested populations; confidence in this outcome was rated as moderate. A high level of confidence was ascribed to the statement that leaf spring AFOs, which allow controlled motion in the sagittal plane, seemed to facilitate both static and dynamic balance in the studied cohorts. ( J Prosthet Orthot. 2010;22:P4–P23.)

  • 2.
    Ramstrand, Nerrolyn
    et al.
    Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. CHILD.
    Ramstrand, Simon
    Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering.
    Competency standards for newly graduated prosthetist/orthotists in Sweden2018Ingår i: Prosthetics and orthotics international, ISSN 0309-3646, E-ISSN 1746-1553, Vol. 42, nr 4, s. 387-393Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background:

    There are currently no national competency standards upon which to develop educational objectives for prosthetist/orthotists in Sweden. While standards have been developed in other countries, they cannot be applied without confirming their relevance in a Swedish context.

    Objectives:

    To describe and obtain consensus on core competencies required for newly graduated prosthetist/orthotists in Sweden.

    Study design:

    Modified Delphi process.

    Methods:

    A modified Delphi technique was carried out. Focus groups were initially used to identify core competency domains. Two consecutive questionnaires, containing a list of potential competency items, were sent to a group of stakeholders with ties to the prosthetic and orthotic profession. Stakeholders were requested to rate their level of agreement with each competency item and provide written comments. Finally, two focus groups were conducted to obtain feedback on the draft competency standards.

    Results:

    Forty-four competency items, listed under five key domains of practice, were identified as essential for newly graduated prosthetist/orthotists in Sweden.

    Conclusions:

    Many similarities exist in core competency descriptions for prosthetist/orthotists in Sweden when compared to other countries. Regional differences do however exist, and it is important to confirm the relevance of core competency items at a national level before they are applied.

    Clinical relevance

    Competency standards developed in this study can be used to guide development of learning objectives within an undergraduate prosthetic and orthotic program, provide a framework for workforce development, assist professional organizations in understanding the needs of their members, and prepare for international accreditation.

  • 3.
    Ramstrand, Nerrolyn
    et al.
    Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. CHILD.
    Ramstrand, Simon
    Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering.
    Developing a competence-based core curriculum: a Delphi study2018Ingår i: Journal of prosthetics and orthotics, ISSN 1040-8800, E-ISSN 1534-6331, Vol. 30, nr 2S, s. 69-69Artikel i tidskrift (Refereegranskat)
  • 4.
    Ramstrand, Nerrolyn
    et al.
    Högskolan i Jönköping, Hälsohögskolan, HHJ. Ortopedteknisk plattform.
    Ramstrand, Simon
    Högskolan i Jönköping, Hälsohögskolan, HHJ. Ortopedteknisk plattform.
    Brolund, Per
    Norell, Kristin
    Bergström, Peter
    Relative effects of posture and activity on human height estimation from surveillance footage.2011Ingår i: Forensic Science International, ISSN 0379-0738, E-ISSN 1872-6283, Vol. 212, nr 1-3, s. 27-31Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Height estimations based on security camera footage are often requested by law enforcement authorities. While valid and reliable techniques have been established to determine vertical distances from video frames, there is a discrepancy between a person's true static height and their height as measured when assuming different postures or when in motion (e.g., walking). The aim of the research presented in this report was to accurately record the height of subjects as they performed a variety of activities typically observed in security camera footage and compare results to height recorded using a standard height measuring device. Forty-six able bodied adults participated in this study and were recorded using a 3D motion analysis system while performing eight different tasks. Height measurements captured using the 3D motion analysis system were compared to static height measurements in order to determine relative differences. It is anticipated that results presented in this report can be used by forensic image analysis experts as a basis for correcting height estimations of people captured on surveillance footage.

  • 5.
    Rusaw, David
    et al.
    Högskolan i Jönköping, Hälsohögskolan, HHJ. Ortopedteknisk plattform. Högskolan i Jönköping, Hälsohögskolan, HHJ. ADULT. Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering.
    Ramstrand, Simon
    Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. Ortopedteknisk plattform.
    Validation of the Inverted Pendulum Model in standing for transtibial prosthesis users2016Ingår i: Clinical Biomechanics, ISSN 0268-0033, E-ISSN 1879-1271, Vol. 31, s. 100-106Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: In balance assessment it is often the case that variables associated with center of pressure are used as outcomes to draw conclusions about an individuals balance.  Validity of these outcomes rests upon assumptions that movement of the center of pressure is inter-dependent on movement of the center of mass.  This dependency is mechanical and is referred to as the Inverted Pendulum Model.  As prosthesis users lack an anatomical ankle it is not given this model is valid in this group.  The following study aimed to validate the Inverted Pendulum Model both kinematically and kinetically, in transtibial prosthesis users and a control group.  

    Methods: Prosthesis users (n=6) and matched control participants (n=6) stood quietly while force and motion data were collected under three sensory conditions (eyes-open, eyes-closed, and weight-bearing feedback) under both the prosthetic and intact limb.  Correlation coefficients were used to investigate the relationships between height of markers and center of masses and their excursion in the mediolateral/anteroposterior-directions, difference between center of pressure and center of mass and the center of mass acceleration in the mediolateral/anteroposterior directions, magnitude of the mediolateral/anteroposterior-component forces and center of mass acceleration, angular position of ankle and excursion in the mediolateral/anteroposterior-directions, and integrated force signals.  

    Findings: Results indicate kinematic validity of similar magnitudes (mean (SD) marker-displacement) between prosthesis users and control group for the mediolateral- (  = 0.77 (0.17); 0.74 (0.19)) and anteroposterior-directions (  = 0.88 (0.18); 0.88 (0.19)).  Correlation between the difference of center of pressure and center of mass and the center of mass acceleration was negligible on the prosthetic side (0.08 (0.06)) vs. the control group (-0.51(0.13)). 

    Interpretation: Results indicate kinematic validity of the Inverted Pendulum Model in transtibial prosthesis users but that kinetic validity is questionable, particularly on the side with a prosthesis.

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