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  • SAGE Publications  (3)
  • 2015-2019  (3)
  • 1
    Online Resource
    Online Resource
    Olecranon fractures in children and adolescents: Outcomes based on fracture fixation
    SAGE Publications ; 2018
    In:  Journal of Children's Orthopaedics Vol. 12, No. 5 ( 2018-10), p. 497-501
    Details
    In: Journal of Children's Orthopaedics, SAGE Publications, Vol. 12, No. 5 ( 2018-10), p. 497-501
    Abstract: Open reduction and internal fixation with a tension band construct is the standard treatment for displaced transverse intra-articular olecranon fractures. The purpose of this study is to describe the outcomes of tension band fixation of olecranon fractures in children, specifically assessing the need for revision fixation and hardware removal. Methods Patients less than 18 years of age diagnosed with a displaced transverse intra-articular olecranon fracture and treated with tension band fixation between 2008 and 2017 were retrospectively enrolled. Operative treatment was with tension band wire (TBW) or tension band suture (TBS) constructs. Results A total of 46 patients, 36 male and ten female with a mean age of 12.3 years (6 to 17), were included. Surgical fixation was with TBW in 17 patients and TBS in 29 patients. Revision fixation due to failure and fracture displacement was required in 6% of the TBW group and 14% of the TBS group (p = 0.19). The patients who required revision fixation in the TBS group were older (14.7 years versus 11.6 years, p = 0.05) and heavier (70.5 kg versus 48.5 kg, p = 0.05) than those in the same group who did not require revision fixation. Conclusion Paediatric olecranon fractures treated with TBW or TBS fixation unite in the majority of patients with similar need for hardware removal due to prominence and/or pain between fixation techniques. In a select group of older patients weighing greater than 50 kg, TBS constructs demonstrate increased failure rates, requiring revision fixation, and should be avoided in this population group. Level of Evidence IV
    Type of Medium: Online Resource
    ISSN: 1863-2521 , 1863-2548
    URL: Article
    DOI: 10.1302/1863-2548.12.180029
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2268264-8
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  • 2
    Online Resource
    Online Resource
    Impact of intraprosthetic drilling on the strength of the femoral stem in periprosthetic fractures: A finite element investigation
    SAGE Publications ; 2016
    In:  Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Vol. 230, No. 7 ( 2016-07), p. 675-681
    Details
    In: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, SAGE Publications, Vol. 230, No. 7 ( 2016-07), p. 675-681
    Abstract: Treatment of periprosthetic femur fractures after total hip arthroplasty remains a major challenge in orthopedic surgery. Recently, a novel surgical technique using intraprosthetic screw fixation has been suggested. The purpose of this study was to evaluate the influence of drilling the femoral hip stem on integrity and strength of the implant. The hypothesis was that intraprosthetic drilling and screw fixation would not cause the load limit of the prosthesis to be exceeded and that deformation would remain within the elastic limit. A sawbone model with a conventional straight hip stem was used and a Vancouver C periprosthetic fracture was created. The fracture was fixed with a nine-hole less invasive stabilization system plate with two screws drilled and inserted through the femoral hip stem. Three different finite element models were created using ANSYS software. The models increased in complexity including joint forces and stress risers from three different dimensions. A variation of drilling positions was analyzed. Due to the complexity of the physiological conditions in the human femur, the most complex finite element model provided the most realistic results. Overall, significant changes in the stresses to the prosthesis caused by the drilling procedure were observed. While the stresses at the site of the bore hole decreased, the load increased in the surrounding stem material. This effect is more pronounced and further the holes were apart, and it was found that increasing the number of holes could counteract this. The maximum load was still found to be in the area of the prosthesis neck. No stresses above the load limit of titanium alloy were detected. All deformations of the prosthesis stem remained in the elastic range. These results may indicate a potential role for intraprosthetic screw fixation in the future treatment of periprosthetic femur fractures.
    Type of Medium: Online Resource
    ISSN: 0954-4119 , 2041-3033
    URL: Article
    DOI: 10.1177/0954411916647078
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2032763-8
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  • 3
    Online Resource
    Online Resource
    Academic domains as political battlegrounds : A global enquiry by 99 academics in the fields of education and technology
    SAGE Publications ; 2017
    In:  Information Development Vol. 33, No. 3 ( 2017-06), p. 270-288
    Details
    In: Information Development, SAGE Publications, Vol. 33, No. 3 ( 2017-06), p. 270-288
    Abstract: This article theorizes the functional relationship between the human components (i.e., scholars) and non-human components (i.e., structural configurations) of academic domains. It is organized around the following question: in what ways have scholars formed and been formed by the structural configurations of their academic domain? The article uses as a case study the academic domain of education and technology to examine this question. Its authorship approach is innovative, with a worldwide collection of academics (99 authors) collaborating to address the proposed question based on their reflections on daily social and academic practices. This collaboration followed a three-round process of contributions via email. Analysis of these scholars’ reflective accounts was carried out, and a theoretical proposition was established from this analysis. The proposition is of a mutual (yet not necessarily balanced) power (and therefore political) relationship between the human and non-human constituents of an academic realm, with the two shaping one another. One implication of this proposition is that these non-human elements exist as political ‘actors’, just like their human counterparts, having ‘agency’ – which they exercise over humans. This turns academic domains into political (functional or dysfunctional) ‘battlefields’ wherein both humans and non-humans engage in political activities and actions that form the identity of the academic domain. For more information about the authorship approach, please see Al Lily AEA (2015) A crowd-authoring project on the scholarship of educational technology. Information Development. doi: 10.1177/0266666915622044.
    Type of Medium: Online Resource
    ISSN: 0266-6669 , 1741-6469
    URL: Article
    DOI: 10.1177/0266666916646415
    RVK:
    AN 10100
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2017
    detail.hit.zdb_id: 89692-5
    detail.hit.zdb_id: 2025059-9
    SSG: 24,1
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