3-dimensional computer tomography is more accurate than traditional long-leg radiographs in the planning and evaluation of coronal alignment in total knee arthroplasty: a prospective study on 121 knees.
Background and purpose -- Accurate measuring tools are essential in preoperative planning and for the study of the association between postoperative alignment and clinical outcome in total knee arthroplasty (TKA). We aimed to describe a simple method to measure preoperative hip-knee-femoral shaft (H...
| Publicado en: | Acta Orthopaedica Vol. 94; pp. 530 - 537 |
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| Autores principales: | , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Medical Journals Sweden AB
2023
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=174668836&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 174668836 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 17453674 1BVL jtl: Acta Orthopaedica issn: 17453674 maglogo: N pubinfo: dt: 2023 vid: 94 pid: 59195 pub: Medical Journals Sweden AB artinfo: ui: 174668836 174668836 174668836 10.2340/17453674.2023.19695 174668836 ppf: 530 ppct: 7 formats: fmt: @attributes: type: P tig: atl: 3-dimensional computer tomography is more accurate than traditional long-leg radiographs in the planning and evaluation of coronal alignment in total knee arthroplasty: a prospective study on 121 knees. aug: au: AUNAN, Eirik ALHAUG, Eivind SCHULLER, Siri G. RUNDFLOEN, Jan E. affil: Department of Orthopaedic Surgery, Sykehuset Innlandet Hospital Trust, Lillehammer, Norway sug: subj: Imaging, Three-Dimensional Utilization Tomography, X-Ray Computed Utilization Leg Radiography Arthroplasty, Replacement, Knee Methods Bone Malalignment Prevention and Control Leg Anatomy and Histology Hip Radiography Knee Radiography Femur Radiography Preoperative Period Human Prospective Studies Interrater Reliability Intraclass Correlation Coefficient Comparative Studies kappa Statistic Descriptive Statistics Confidence Intervals ab: Background and purpose -- Accurate measuring tools are essential in preoperative planning and for the study of the association between postoperative alignment and clinical outcome in total knee arthroplasty (TKA). We aimed to describe a simple method to measure preoperative hip-knee-femoral shaft (HKFS) angle and postoperative coronal alignment in TKA with the use of standard 3D CT and to compare preoperative HKFS angles and postoperative coronal alignment measured with the 3D CT technique and with standing long-leg hip-knee-ankle (HKA) radiographs. Patients and methods -- HKA radiographs and 3D CT were taken preoperatively and 3 months after the operation in 121 knees. The interrater reliability for the 3D CT method was calculated with intra-class correlation coefficient (ICC). The preoperative HKFS angles and the postoperative deformity measured with the 2 methods were compared and illustrated on Bland-Altman plots, frequency tables, and by Cohen's kappa coefficients (κ). Results -- The 3D CT method was feasible in all knees and the ICC was excellent. Mean (SD, range) difference in HKFS angle measured on HKA radiographs and on 3D CT was -0.3° (0.9°, -4.1° to 2.4°). Mean (SD, range) difference in postoperative deformity was 0.1° (1.6°, -5° to 6°). The 95% limits of agreement were 1.4° and -2° for HKFS and ±3° for postoperative alignment. The agreement in outlier (≥ 3°) identification was moderate with a κ (95% confidence interval) of 0.48 (0.32-0.64). Conclusion -- 3-dimensional computer tomography was feasible and was shown to be more accurate than traditional long-leg radiographs pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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