• Spine · Jul 2024

    Multicenter Study Comparative Study

    Modern Concepts in Sagittal Curve Measurement: Comparison of Spline-based and Fixed Landmark Measurements in a Cohort of 1520 Healthy Subjects.

    • Sébastien Pesenti, Solene Prost, Federico Solla, Brice Ilharreborde, Emmanuelle Ferrero, Ibrahim Obeid, Guillaume Riouallon, Fethi Laouissat, Yann Philippe Charles, Benjamin Blondel, and French Society of Spine Surgery (SFCR).
    • Orthopédie Pédiatrique, CHU Timone Enfants, AP-HM, Aix-Marseille Université, Marseille, France.
    • Spine. 2024 Jul 15; 49 (14): 101210201012-1020.

    Study DesignRetrospective multicenter study.ObjectiveOur objective was to compare the spline-based measurement of sagittal spinal curvatures to fixed landmarks in a normative population.Summary Of Background DataRecent research has stressed the importance of considering sagittal curvature in its entirety using a spline reconstruction. To date, no data supports the superiority of this method in comparison to classic measurement methods.Patients And MethodsFull-spine biplanar radiographs of subjects over 20 years old who had normal radiographs were analyzed. Thoracic kyphosis (TK) and lumbar lordosis (LL) were measured following two modalities: either using predefined landmarks (TK T1T12 , TK T5T12 , and LL L1S1 ) or spline-based measurement (TK Spline and LL spline ).ResultsA total of 1520 subjects were included (mean 54yo). The mean difference between TK spline and TK T1T12 was 1.4° and between TK spline and TK T5T12 was 11.7° ( P <0.001). LL spline was significantly larger than LL L1S1 (55° vs . 54°, P<0.001 ). LL spline and LL L1S1 were correlated ( R =0.950, P <0.001). Pelvic incidence had no influence on the difference between LL spline and LL L1S1 ( R =-0.034, P= 0.184). Using LL L1S1 measurements, LL was underestimated in 17% of the cases. The comparison of outlier distributions according to age groups ( P =0.175), sex ( P =0.937), or pelvic incidence groups ( P =0.662) found no difference. There were significantly more outliers in Roussouly type 1 compared with other types (56%, P <0.001).ConclusionOur results suggest that the use of TK T1T12 and LL L1S1 is acceptable to assess spinal sagittal curvatures. However, TK T5T12 is not accurate for the thoracic curve and should be used with caution. LL L1S1 can be used to accurately assess the lumbar curve, except in Roussouly type 1.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

      Pubmed     Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…