Evidence map›Paper›PMID 41057717›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2025

Is technological-assisted leg axis alignment reliable in total knee arthroplasty with varus-valgus deformities?

Daniel Hernandez-Vaquero, Alfonso Noriega-Fernandez, Sergio Roncero-Gonzalez

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Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

3 authors.

Daniel Hernandez-VaqueroUniversity of Oviedo, Oviedo, Spain. dhernandez@uniovi.es.
Alfonso Noriega-Fernandez
Sergio Roncero-Gonzalez

Funding

Fondo de Investigación Sanitaria (Instituto de Salud Carlos III, Ministry of Health, Spain) PI12/01098
6 · The paper itself

Abstract

purposeComputer-assisted systems improve conventional instrumentation in normalizing the axis of the limb in frontal deformities. The performance of a postoperative X-ray has been questioned to verify this axis, assuming that it can be replaced by the final image that appears on the system monitor. The objective of this work is to verify whether both axes are similar.

methodsIn 123 patients with varus-valgus frontal deformity, a total knee arthroplasty was implanted with the aid of the same navigation system without previous images. On the one hand, the final femorotibial angulation that appeared on the monitor screen, and on the other hand, the one observed in a long postoperative digitalized radiograph were recorded.

resultsA discrepancy and poor correlation were observed between the femorotibial alignment verified radiographically and that shown on the system monitor at the end of the surgical procedure. Differences were significant in the valgus deformity group (p = 0.04) and especially in the varus cases (p < 0.001). The median postoperative axis as measured by computer-assisted was very close to neutral, but a deviation toward varus was observed on the X-ray.

conclusionThe axis of the limb observed with a computer-assisted system is closer to neutral alignment than that shown on the digitalized X-ray image after total arthroplasty in patients with frontal deformities. A postoperative X-ray is recommended as certification of the result, being more reliable than the final image from the system monitor.

Indexed as

Arthroplasty, Replacement, KneeBone MalalignmentKnee JointSurgery, Computer-AssistedAgedAged, 80 and overFemaleFemurHumansMaleMiddle AgedOsteoarthritis, KneeRadiographyTibiaAlignmentComputer-assisted systemDigital x-rayTechnology-assisted TKATotal knee arthroplastyVarus-valgus deformities

Identifiers

PMID41057717
PMCPMC12504379

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