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Comparison of weight-bearing full-length radiographs and computed-tomography-scan-based three-dimensional models in the assessment of knee joint coronal alignment

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dc.contributor.authorLeón Muñoz, Vicente 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.accessioned2025-01-30T17:08:18Z
dc.date.available2025-01-30T17:08:18Z
dc.date.issued2020-03
dc.description© 2019 Elsevier B.V. This document is the Published Manuscript, version of a Published Work that appeared in final form in The Knee. To access the final edited and published work see https://doi.org/10.1016/j.knee.2019.11.017
dc.description.abstractBackground: The aim of the study was to determine any discrepancies among preoperative full-leg standing radiographs (LLR) and supine non-weight-bearing computed tomography (CT)-scan-based three-dimensional (3D) models in the assessment of the lower limb alignment prior to total knee arthroplasty (TKA) and answer the question of whether the LLR study can be obviated in preoperative planning when TKA is performed with patient-specific instrumentation (PSI). Methods: LLR and CT-scan-based 3D models of 227 knees (183 patients) were measured. LLR data was then compared to 3D alignment data used to design the PSI for TKA surgery. Results: Alignment on LLR ranged from 153 to 194° versus 161.5 to 190.5° with CT-scan-based 3D models. The mean (standard deviation, SD) difference among techniques was 1.9° (1.15°) with a statistically significant difference (P = 2e-16, namely P b .0001). Supine CT-scanbased 3D models underestimated the deformity in 167 cases (73.6%), exactly matched the value of LLR in 24 cases (10.6%) and overestimated the deformity in 36 cases (15.8%). Conclusion: CT-scan-based models underestimate the degree of deformity at the knee joint. Despite the accurate information provided by the CT-scan and the 3D models (which is the basis for the planning of bone cuts), weight-bearing LLR should not be overlooked in the planning of TKA surgery to assess the extent of the coronal mediolateral instability.es
dc.formatapplication/pdfes
dc.format.extent9es
dc.identifier.citationThe Knee, 2020, Vol. 27, Issue 2, pp. 543-551
dc.identifier.doihttps://doi.org/10.1016/j.knee.2019.11.017
dc.identifier.issnPrint: 0968-0160
dc.identifier.issnElectronic: 1873-5800
dc.identifier.urihttp://hdl.handle.net/10201/149797
dc.languageenges
dc.publisherElsevier
dc.relationSin financiación externa a la Universidades
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0968016019303072
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectTotal knee arthroplastyes
dc.subjectAlignmentes
dc.subjectFull leg standing radiographses
dc.subjectCT scan patient specific instrumentses
dc.titleComparison of weight-bearing full-length radiographs and computed-tomography-scan-based three-dimensional models in the assessment of knee joint coronal alignmentes
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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