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dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.contributor.advisorOrtiz Morales, Jorge Rolando
dc.contributor.authorGonzález Gil, Juliana
dc.date.accessioned2021-02-01T17:49:16Z
dc.date.available2021-02-01T17:49:16Z
dc.date.issued2020-07-01
dc.identifier.citationGonzález Gil, J. (2020). Rendimiento diagnóstico de la radiografía convencional simple de rodilla en la identificación de éxito de reemplazo total de rodilla [Tesis de especialidad, Universidad Nacional de Colombia]. Repositorio Institucional.
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/79014
dc.description.abstractBackground: Total knee arthroplasty is one of the most common orthopedic procedures. The coronal alignment of the lower limb is important for planning and assessing outcomes and should be restored. The aim of this study was to determine whether standard anteroposterior knee radiographs adequately assess lower limb alignment respect to full limb radiograph. Methods: There were obtained pre-operative and postoperative knee radiograph and weight-bearing hip-to-ankle radiograph of one hundred thirty-two knees. We analyzed the measurements on coronal plane to determinate diagnostic performance in terms of sensitivity, specificity, predictive values and likelihood ratios of these in the standard x-ray. Results: Tibiofemoral angle of preoperative and postoperative radiographs shows best performance respect the other measurements in mechanical axis assessment with sensitivity of 51.81% to 86.96% and specificity of 33.33% to 50% which increase when another abnormal or positive angle is added. Full limb radiograph analysis shows that standard knee radiograph tibiofemoral angle also has the higher sensitivity and specificity of 36.84% to 88% and of 63.64 to 100% respectively in comparison with anatomic tibiofemoral angle. Conclusions: Global trend respect to anteroposterior knee radiograph performance shows higher sensitivity in preoperative measurements but higher specificity in postoperative measurements, therefore proving that standard knee radiograph is useful for inferior limb axis assessment mainly when are considered as a positive or negative test combination of two abnormal vs normal angles (α angle plus tibiofemoral angle) or three altered vs normal angles respectively.
dc.description.abstractIntroducción: El reemplazo total de rodilla es uno de los procedimientos quirúrgicos más frecuentes en cirugía ortopédica, el alineamiento de la extremidad inferior en el plano coronal debe tenerse en cuenta para el planeamiento preoperatorio y debe ser restaurado durante la cirugía. Este estudio evalúa el rendimiento diagnóstico de la radiografía simple en comparación a la ortorradiografía para determinar el alineamiento de la extremidad. Métodos: Se analizaron secuencialmente radiografías y ortorradiografías pre y posoperatorias de 132 rodillas, se realizaron mediciones en plano coronal de los dos estudios y se determinaron sensibilidad y especificidad de éstas en la radiografía simple. Resultados: El ángulo femorotibial en la radiografía simple pre o posoperatoria es el que tiene mayor rendimiento con sensibilidad entre 51.81% al 86.96% y especificidad 33.33% al 50% al comparar con el eje mecánico y que aumenta a medida que se combinan medidas del plano coronal anormales. Con respecto al ángulo femorotibial de la ortorradiografía el ángulo femorotibial en la radiografía simple pre o posoperatoria también es el que tiene mayor rendimiento con sensibilidad entre 36.84% al 88% y especificidad entre 63.64% al 100%. Conclusiones: La tendencia global en relación al rendimiento de la radiografía muestra mayor sensibilidad en las mediciones preoperatorias y mayor especificidad en las mediciones postoperatorias evidenciando ser una prueba útil en la determinación de la desviación del eje mecánico principalmente cuando se considera como prueba positiva o negativa la combinación de dos medidas anormales vs normales (ángulo α mas femorotibial) o de los tres ángulos alterados o normales respectivamente.
dc.format.extent47
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc617 - Cirugía, medicina regional, odontología, oftalmología, otología, audiología
dc.titleRendimiento diagnóstico de la radiografía convencional simple de rodilla en la identificación de éxito de reemplazo total de rodilla
dc.typeOtro
dc.rights.spaAcceso abierto
dc.type.driverinfo:eu-repo/semantics/other
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.publisher.programBogotá - Medicina - Especialidad en Ortopedia y Traumatología
dc.description.degreelevelEspecialidades Médicas
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotá
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.proposalLimb alingment
dc.subject.proposalAlineamiento
dc.subject.proposalSpecificity
dc.subject.proposalEspecificidad
dc.subject.proposalValoración radiográfica
dc.subject.proposalSensitivity
dc.subject.proposalFull limb radiograph
dc.subject.proposalSensibilidad
dc.subject.proposalOrtorradiografía
dc.subject.proposalRadiographic assessment
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dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
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