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dc.contributor.advisorJohn J. Wixted
dc.contributor.authorGaras, Peter K.
dc.contributor.authorLovria, Erik
dc.contributor.authorWixted, John J.
dc.date2022-08-11T08:10:55.000
dc.date.accessioned2022-08-23T17:24:35Z
dc.date.available2022-08-23T17:24:35Z
dc.date.issued2014-04-30
dc.date.submitted2014-05-07
dc.identifier.doi10.13028/crsj-dr53
dc.identifier.urihttp://hdl.handle.net/20.500.14038/49222
dc.description<p>Poster presented on Senior Scholars Program Poster Presentation Day at the University of Massachusetts Medical School, Worcester, MA, on April 30, 2014. Medical student Peter K. Garas participated in this study as part of the Senior Scholars research program at the University of Massachusetts Medical School.</p>
dc.description.abstractBackground: Radiostereometric Analysis (RSA) is a method for performing highly accurate three-dimensional measurements in-vivo using sequential radiographs. RSA has been used extensively for monitoring prosthesis fixation in hip and knee replacements. Recently, there has been increasing interest in applying RSA towards the monitoring of fracture healing. Objective: The objective of this study was to evaluate the feasibility of using RSA to measure strain, stress, and plate migration in a distal femur fracture model. Methods: Femoral sawbones with a distal femur fracture were used as models. A distal femur condylar locking compression plate (LCP) was used to reduce the fracture model. Stainless steel screws were used to fasten the plate to the sawbone. In addition, translucent polyester screws were composed, embedded with 1mm steel beads, and fastened to the most proximal and distal portions of the plate. This allowed for recognition by the RSA imaging modality. The femoral sawbones were then placed in a mechanical testing complex and RSA X-rays taken at different forces of compression. The radiographs were analyzed for plate migration using the 1mm steel beads as points of reference. Results: Preliminary data indicate that it is possible to use a plate model that incorporates a micro-bead system to measure migration. Further analysis will quantify the amount of migration to determine whether significant changes occur at different stages of compression. Conclusion: The ability to measure plate migration in a Radiostereometric Analysis X-ray model is an important step towards improving the ability of orthopedic surgeons to monitor fracture healing and prevent non-union. The next stage of this research will involve using this model in clinical trials of distal femur fractures and building a database to correlate levels of plate migration with surgical outcome.
dc.language.isoen_US
dc.rightsCopyright is held by the author(s), with all rights reserved.
dc.subjectRadiostereometric Analysis (RSA)
dc.subjectFracture healing
dc.subjectFemur fractures
dc.subjectPlate migration
dc.subjectOrthopedics
dc.titleNovel Methodology for Using Radiostereometric Analysis to Monitor Fracture Healing
dc.typePoster
dc.identifier.legacyfulltexthttps://escholarship.umassmed.edu/cgi/viewcontent.cgi?article=1159&amp;context=ssp&amp;unstamped=1
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/ssp/159
dc.identifier.contextkey5558031
refterms.dateFOA2022-08-29T15:44:39Z
html.description.abstract<p><strong>Background:</strong> Radiostereometric Analysis (RSA) is a method for performing highly accurate three-dimensional measurements <em>in-vivo</em> using sequential radiographs. RSA has been used extensively for monitoring prosthesis fixation in hip and knee replacements. Recently, there has been increasing interest in applying RSA towards the monitoring of fracture healing.</p> <p><strong>Objective:</strong> The objective of this study was to evaluate the feasibility of using RSA to measure strain, stress, and plate migration in a distal femur fracture model.</p> <p><strong>Methods: </strong>Femoral sawbones with a distal femur fracture were used as models. A distal femur condylar locking compression plate (LCP) was used to reduce the fracture model. Stainless steel screws were used to fasten the plate to the sawbone. In addition, translucent polyester screws were composed, embedded with 1mm steel beads, and fastened to the most proximal and distal portions of the plate. This allowed for recognition by the RSA imaging modality. The femoral sawbones were then placed in a mechanical testing complex and RSA X-rays taken at different forces of compression. The radiographs were analyzed for plate migration using the 1mm steel beads as points of reference.</p> <p><strong>Results: </strong>Preliminary data indicate that it is possible to use a plate model that incorporates a micro-bead system to measure migration. Further analysis will quantify the amount of migration to determine whether significant changes occur at different stages of compression.</p> <p><strong>Conclusion:</strong> The ability to measure plate migration in a Radiostereometric Analysis X-ray model is an important step towards improving the ability of orthopedic surgeons to monitor fracture healing and prevent non-union. The next stage of this research will involve using this model in clinical trials of distal femur fractures and building a database to correlate levels of plate migration with surgical outcome.</p>
dc.identifier.submissionpathssp/159
dc.contributor.departmentDepartment of Orthopedics and Physical Rehabilitation


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