Research ArticleLumbar Spine

An Anatomic Study Examining Lumbar Pars Interarticularis Distance and Spinal Canal Width in Relation to Lumbar Decompressive Surgery

Innocent U. Njoku, Joshua Young-Ki Park, Mohammed A. Munim, Amelia Clarke and Christina W. Cheng
International Journal of Spine Surgery June 2022, 8292; DOI: https://doi.org/10.14444/8292

Article Figures & Data

Figures

  • Figure 1
    Figure 1

    (A) Measuring interpars distance using manual calipers from the lateral edge of one pars to the lateral edge of the contralateral pars. (B) Measuring spinal canal width using manual calipers from the medial cortex of one pedicle to the medial cortex of the contralateral pedicle.

  • Figure 2
    Figure 2

    Differences in mean pars interarticularis distance among (A) lumbar levels, (B) sex, and (C) race. *Statistically significant (P < 0.05). #Statistically significant (P < 0.01).

  • Figure 3
    Figure 3

    Differences in mean spinal canal width among (A) lumbar levels, (B) sex, and (C) race. *Statistically significant (P < 0.05). #Statistically significant (P < 0.05).

Tables

  • Table 1

    Demographics for specimens.

    SexRaceNo. of SpecimensAge at Time of Death, y, Mean ± SD
    MaleAfrican American2525.2 ± 2.8
    Caucasian2525.6 ± 3.5
    FemaleAfrican American2525.4 ± 2.6
    Caucasian1826.8 ± 2.1
  • Table 2

    Ratio of pars interarticularis distance to spinal canal width for each vertebral lumbar level.

    Lumbar LevelPars Interarticularis Distance/Spinal Canal Width Ratio, Mean ± SD
    L11.17 ± 0.11
    L21.23 ± 0.09
    L31.34 ± 0.09
    L41.49 ± 0.13
    L51.67 ± 0.18
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An Anatomic Study Examining Lumbar Pars Interarticularis Distance and Spinal Canal Width in Relation to Lumbar Decompressive Surgery
Innocent U. Njoku, Joshua Young-Ki Park, Mohammed A. Munim, Amelia Clarke, Christina W. Cheng
International Journal of Spine Surgery Jun 2022, 8292; DOI: 10.14444/8292
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