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Reliability of the posterior condylar offset

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dc.contributor.authorLeón Muñoz, Vicente J.
dc.contributor.authorParrinello, Andrea
dc.contributor.authorGalloni, Gianluca
dc.contributor.authorLisón Almagro, Alonso J
dc.contributor.authorLópez López, Mirian
dc.contributor.authorMartínez Martínez, Francisco
dc.contributor.authorSantonja Medina, Fernando
dc.contributor.departmentCirugía, Pediatría y Obstetricia y Ginecología
dc.date.accessioned2025-01-31T10:03:45Z
dc.date.available2025-01-31T10:03:45Z
dc.date.issued2022-08
dc.description© 2021 Orthopaedic Research Society. This document is the Published Manuscript version of a Published Work that appeared in final form in Journal of Orthopaedic Research . To access the final edited and published work see https://doi.org/10.1002/jor.25205
dc.description.abstractThe posterior condylar offset (PCO) has been proposed as a determinant of a postoperative range of motion after total knee arthroplasty, although there is no consensus. This study aimed to demonstrate the error introduced by forcing the femoral rotation to overlap both condyles for the “true” lateral X‐ray projection for the PCO measurement. We hypothesize that the angular discrepancy between the posterior femoral cortical reference plane and the posterior condylar axis plane due to rotation invalidates the acquisition of reliable measurements on X‐rays. We have measured the PCO in 50 “true” lateral X‐rays and compared it with the medial and lateral condyles PCO's assessed on a computed tomography‐scan‐based three‐ dimensional (3D) model of each knee. PCO based on the 3D imaging differed significantly between the medial (25.8 ± 3.67 mm) and lateral (16.59 ± 2.92 mm) condyle. Three‐dimensional PCO values differ significantly from those determined in the radiographic studies. Also, the mean values of the medial and lateral condyle PCO measurements differed significantly (p < 0.001) with all PCO measurements on radiographs. We have identified a difference between the posterior cortical plane and the posterior condylar axis projections, both on the axial plane with a mean value of 11.23° ± 3.64°. Our data show an interplane discrepancy angle between the posterior femoral diaphyseal cortical and the posterior condylar axis plane (due to the femur's necessary rotation to overlap both condyles) may invalidate the 2D X‐ray PCO assessment as a reliable measurement.es
dc.formatapplication/pdfes
dc.format.extent7es
dc.identifier.citationJournal of Orthopaedic Research , 2022, Vol. 40, Issue 8, pp. 1794-1800
dc.identifier.doihttps://doi.org/10.1002/jor.25205
dc.identifier.issnPrint: 0736-0266
dc.identifier.issnElectronic: 1554-527X
dc.identifier.urihttp://hdl.handle.net/10201/149853
dc.languageenges
dc.publisherWiley
dc.relationSin financiación externa a la Universidades
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/10.1002/jor.25205
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectDistal femures
dc.subjectKneees
dc.subjectPosterior condylar offsetes
dc.subjectThree dimensional assessmentes
dc.subjectTotal knee arthroplastyes
dc.titleReliability of the posterior condylar offsetes
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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