111 research outputs found
Military cultural competency: Understanding how to serve those who serve
The aim of this essay is to define and describe the different constituents of the military population, and present the challenges this demographic faces when pursuing higher education. The essay also discusses key aspects higher education professionals must understand in order to better serve military populations, such as federal regulations and military structures. After reviewing several reports from the government and organizations that support military populations, the authors found more research is needed in order to better understand the unique challenges of civilian male spouses of active duty service members, and both male and female spouses of disabled veterans and military retirees, as research and reports have historically excluded these populations. The authors conclude by presenting best practices higher education institutions can put into practice to better serve military populations.DOI: 10.18870/hlrc.v5i2.22
Capturing the multiscale anatomical shape variability with polyaffine transformation trees
Contribution of geometric design parameters to knee implant performance: Conflicting impact of conformity on kinematics and contact mechanics
Evidence Based Development of a Novel Lateral Fibula Plate (VariAx Fibula) Using a Real CT Bone Data Based Optimization Process During Device Development
Development of novel implants in orthopaedic trauma surgery is based on limited datasets of cadaver trials or artificial bone models. A method has been developed whereby implants can be constructed in an evidence based method founded on a large anatomic database consisting of more than 2.000 datasets of bones extracted from CT scans. The aim of this study was the development and clinical application of an anatomically pre-contoured plate for the treatment of distal fibular fractures based on the anatomical database
Finite Element Analysis of Osteosynthesis Screw Fixation in the Bone Stock: An Appropriate Method for Automatic Screw Modelling
The use of finite element analysis (FEA) has grown to a more and more important method in the field of biomedical engineering and biomechanics. Although increased computational performance allows new ways to generate more complex biomechanical models, in the area of orthopaedic surgery, solid modelling of screws and drill holes represent a limitation of their use for individual cases and an increase of computational costs. To cope with these requirements, different methods for numerical screw modelling have therefore been investigated to improve its application diversity. Exemplarily, fixation was performed for stabilization of a large segmental femoral bone defect by an osteosynthesis plate. Three different numerical modelling techniques for implant fixation were used in this study, i.e. without screw modelling, screws as solid elements as well as screws as structural elements. The latter one offers the possibility to implement automatically generated screws with variable geometry on arbitrary FE models. Structural screws were parametrically generated by a Python script for the automatic generation in the FE-software Abaqus/CAE on both a tetrahedral and a hexahedral meshed femur. Accuracy of the FE models was confirmed by experimental testing using a composite femur with a segmental defect and an identical osteosynthesis plate for primary stabilisation with titanium screws. Both deflection of the femoral head and the gap alteration were measured with an optical measuring system with an accuracy of approximately 3 µm. For both screw modelling techniques a sufficient correlation of approximately 95% between numerical and experimental analysis was found. Furthermore, using structural elements for screw modelling the computational time could be reduced by 85% using hexahedral elements instead of tetrahedral elements for femur meshing. The automatically generated screw modelling offers a realistic simulation of the osteosynthesis fixation with screws in the adjacent bone stock and can be used for further investigations
Indications for implant removal after fracture healing: a review of the literature
Introduction: The aim of this review was to collect and summarize published data on the indications for implant removal after fracture healing, since these are not well defined and guidelines hardly exist. Methods: A literature search was performed. Results: Though there are several presumed benefits of implant removal, such as functional improvement and pain relief, the surgical procedure can be very challenging and may lead to complications or even worsening of the complaints. Research has focused on the safety of metal implants (e.g., risk of corrosion, allergy, and carcinogenesis). For these reasons, implants have been removed routinely for decades. Along with the introduction of titanium alloy implants, the need for implant removal became a subject of debate in view of potential (dis)advantages since, in general, implants made of titanium alloys are more difficult to remove. Currently, the main indications for removal from both the upper and lower extremity are mostly 'relative' and patient-driven, such as pain, prominent material, or simply the request for removal. True medical indications like infection or intra-articular material are minor reasons. Conclusion: This review illustrates the great variety of view points in the literature, with large differences in opinions and practices about the indications for implant removal after fracture healing. Since some studies have described asymptomatic patients developing complaints after removal, the general advice nowadays is to remove implants after fracture healing only in symptomatic patients and after a proper informed consent. Well-designed prospective studies on this subject are urgently needed in order to form guidelines based on scientific evidence
Military cultural competency: Understanding how to serve those who serve
Institutions of higher education who serve military populations need clear understanding of federal regulations and of military organization best practices in education. They also need a baseline understanding of the broader military population, as well as the unique challenges and opportunities for military subgroups, based on branch, type, and extent of service. The intent of this article is to provide a baseline understanding of military populations, including the unique needs, challenges, and opportunities for service to population subgroups (i.e., active duty service members, prior service members, including disabled veterans and retirees, and military family members). Overall, we propose that “military cultural competence” is a unique cultural competence which is necessary to develop both at the institutional level and for individual staff and faculty, in order to ensure appropriate service for military students in higher education.SIN FINANCIACIÓNNo data 201
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