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2 , respectively. The correlation coefficient was high at 0.913 for the L3/4 and L4 interpedicular transverse plane. The correlation coefficient for L4/5 and L5 was 0.905, and the correlation coefficient for L5/S1 and S1 was 0.845. Conclusion: The lumbar spinal canal dimension measured at the intervertebral disc level in a population of normal Korean subjects is expected to be useful as reference data. The transpedicular plane perpendicular to the spinal canal can give information for estimating the spinal canal dimension at the disc level.
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Shim et al. (2008) studied this question.
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