Reliability of two different measuring techniques with computer tomography for penetration and distribution of cement in the proximal tibia after total knee arthroplasty.

BMC Musculoskeletal Disorders
Hennie VerburgNina Mathijssen

Abstract

To evaluate the reliability of two different techniques for measuring penetration and distribution of the cement mantle in the proximal tibia after total knee arthroplasty (TKA) with Computer Tomography (CT) in vivo. Standardized CT scans of the proximal tibia were taken 1 to 2 years after total knee arthroplasties implanted with a surface cementing technique. These prospectively acquired transversal CT images of the surface of the proximal tibia were divided into four quadrants and were assessed once manually and once with a numerical computing program (MATLAB® Update 2, The MathWorks, Inc.) based on Hounsfield Units by one of the researchers. The assessments were repeated by the same and a second researcher. The ratio cement/trabecular bone was calculated 1, 3 and 5 mm distal of the tibia tray per quadrant. Kruskall-Wallis tests with multiple pairwise comparisons (Dunn's test) were used to determine differences between the quadrants. Intra- and inter-rater reliability as well as the inter method reliability were assessed with the Intraclass Correlation Coefficient (ICC) per level of depth and with Bland-Altman plots. A total of 92 CT scans were included. The intra- and inter-rater reliability of the manual method ranged from ...Continue Reading

References

Jul 14, 2001·Clinical Orthopaedics and Related Research·F F BuechelJ D'Alessio
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Nov 20, 2002·Clinical Orthopaedics and Related Research·E Michael KeatingMerrill A Ritter
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Jan 23, 2019·BMC Medical Imaging·Christian B ScheeleMatthias F Pietschmann

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Citations

Oct 26, 2021·Der Orthopäde·Christoph Stotter, Philipp von Roth

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Methods Mentioned

BETA
sizing

Software Mentioned

SPSS® Statistics
CARESTREAM Vue
MATLAB®
Matlab

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