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Research ArticleArticles

Radiographic Analysis of Cervical and Spinal Alignment in Multilevel ACDF with Lordotic Interbody Device

Yoshihiro Katsuura, Alex Lemons, Eileen Lorenz, Rachel Swafford, James Osborn and Garrick Cason
International Journal of Spine Surgery January 2017, 11 (2) 13; DOI: https://doi.org/10.14444/4013
Yoshihiro Katsuura
1University of Tennessee Department of Orthopaedic Surgery, Chattanooga, TN
MD
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Alex Lemons
1University of Tennessee Department of Orthopaedic Surgery, Chattanooga, TN
MD
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Eileen Lorenz
2Erlanger Hospital, Department of Radiology, Chattanooga, TN
MD
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Rachel Swafford
2Erlanger Hospital, Department of Radiology, Chattanooga, TN
MPH
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James Osborn
1University of Tennessee Department of Orthopaedic Surgery, Chattanooga, TN
3Tennova Health Care, Cleveland, TN
MD, MPH
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Garrick Cason
1University of Tennessee Department of Orthopaedic Surgery, Chattanooga, TN
3Tennova Health Care, Cleveland, TN
MD
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  • Fig. 1
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    Fig. 1

    Case Example: Lateral Cervical x-rays obtained at Pre-op (A), 4 weeks (B), 10 weeks (C), and 6 months (D) showing increase in C2-C7 lordosis from 13°, to 29°, 29° and 30° respectively.

  • Fig. 2
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    Fig. 2

    Case example continued: Lateral full 36 inch scoliosis films taken at pre-op (B) and 4 weeks post op (A) demonstrating increase in sagittal vertical axis from -30mm to 19mm.

  • Fig. 3
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    Fig. 3

    Line chart of the average degree of cervical lordosis measured at four time points (preoperative, 4 weeks, 10 weeks and 6 months postoperative).

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    Fig. 4

    Bar graph showing the pre- and postoperative C1-SVA means.

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    Fig. 5

    Scatter plot and regression analysis of change in C2-C7 Lordosis vs. change in C7-SVA in pre- to postoperative measurements.

  • Fig. 6
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    Fig. 6

    Diagram of Sagittal Vertical Axis (SVA, black line) shift with regards to increasing cervical lordosis (Cobb angle measured by red lines). As Cervical Lordosis increased from A to C, SVA also increases (blue and red arrow).

Tables

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    Table 1

    Study demographics for cervical alignment.

    Demographic
    Mean Age56 yrs
    Sex47 female
    SmokingN= 32
    Mean Weight185.1 Lbs
    Mean Height64.9 inches
    Levels Fused4 levels, N=46
    3 Levels, N=23
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    Table 2

    Study demographics for full-length sagittal vertical axis.

    Demographic
    Mean Age56 yrs
    Sex39 female, 19 Male
    SmokingN= 28
    Mean Weight182.1 Lbs
    Mean Height65.1 inches
    Levels Fused4 levels, N=39
    3 Levels, N=19
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International Journal of Spine Surgery
Vol. 11, Issue 2
1 Jan 2017
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Radiographic Analysis of Cervical and Spinal Alignment in Multilevel ACDF with Lordotic Interbody Device
Yoshihiro Katsuura, Alex Lemons, Eileen Lorenz, Rachel Swafford, James Osborn, Garrick Cason
International Journal of Spine Surgery Jan 2017, 11 (2) 13; DOI: 10.14444/4013

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Radiographic Analysis of Cervical and Spinal Alignment in Multilevel ACDF with Lordotic Interbody Device
Yoshihiro Katsuura, Alex Lemons, Eileen Lorenz, Rachel Swafford, James Osborn, Garrick Cason
International Journal of Spine Surgery Jan 2017, 11 (2) 13; DOI: 10.14444/4013
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Keywords

  • lordosis
  • cervical
  • alignment
  • ACDF
  • sagittal vertical axis
  • anterior cervical discectomy and fusion
  • multilevel

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