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Table 3 Comparison of preoperative parameters between PJK and Non-PJK patients

From: Paraspinal muscle degeneration and lower bone mineral density as predictors of proximal junctional kyphosis in elderly patients with degenerative spinal diseases: a propensity score matched case–control analysis

 

PJK

Non-PJK

P-Values

Number of patients

83

83

 

SVA

5.53 ± 3.38

5.70 ± 3.16

0.729

CT-HU

107.07 ± 30.62

123.28 ± 35.59

0.002

rCSA-ES

12.16 ± 4.19

14.17 ± 5.97

0.013

rCSA-MF

3.39 ± 1.32

3.61 ± 2.20

0.430

rCSA-ES + MF

15.18 ± 3.98

17.65 ± 5.81

 < 0.001

FI-ES

47.6 ± 10.4%

43.4 ± 8.7%

0.006

FI-MF

59.4 ± 6.9%

54.0 ± 6.4%

 < 0.001

  1. SVA sagittal vertical axis, HU hounsfield unit, rCSA relative paraspinal muscle cross area, FI fatty infiltration, MF multifidus muscle, ES erector spinae. All values are expressed as mean value ± standard deviation