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Table 2 Modulus and phase of tissues in the first group at different frequencies (mean ± SD)

From: Tissue discrimination by bioelectrical impedance during PLL resection in anterior decompression surgery for treatment of cervical spondylotic myelopathy

Tissues Frequency (kHz)
200 400 600 800 1000 2000 3000
AF, modulus, Ω 1633.14 ± 125.19 1469.3 ± 120.42 1348.54 ± 111.07 1265.77 ± 83.75 1184.74 ± 71.02 881.82 ± 28.61 703.24 ± 12.42
AF, phase, ° − 24.55 ± 0.44 − 27.34 ± 0.42 − 31.47 ± 0.43 − 35.99 ± 0.44 − 40.37 ± 0.45 − 56.34 ± 0.4 − 65.51 ± 0.47
EC, modulus, Ω 5157.27 ± 278.7 3573.47 ± 152.34 2712.78 ± 92.09 2190.76 ± 73.36 1835.17 ± 60.89 1053.72 ± 19.08 769.21 ± 9.54
EC, phase, ° − 27.65 ± 2.56 − 49.34 ± 2.48 − 61.2 ± 2.25 − 69.04 ± 2.01 − 74.9 ± 2.56 − 79.72 ± 2.07 − 81.18 ± 1.97
SC, modulus, Ω 8974.01 ± 459.7 5108.27 ± 147.23 3538.45 ± 95.82 2705.01 ± 69.12 2193.67 ± 51.13 1156.27 ± 23.65 814.01 ± 16.15
SC, phase, ° − 48.87 ± 0.43 − 66.84 ± 0.45 − 74.33 ± 0.46 − 78.12 ± 0.45 − 80.23 ± 0.5 − 85.4 ± 0.46 − 88.23 ± 0.46
PLL, modulus, Ω 1605.88 ± 100.73 1515.69 ± 101.56 1463.82 ± 108.16 1412.2 ± 118.24 1344.05 ± 106.08 932.2 ± 44.16 688.25 ± 28.12
PLL, phase, ° − 17.1 ± 0.46 − 21.6 ± 0.44 − 26.81 ± 0.42 − 31.83 ± 0.43 − 36.75 ± 0.45 − 55.53 ± 0.47 − 64.95 ± 0.42
  1. SD standard deviation, AF annulus fibrosus, EC endplate cartilage, SC sub-endplate cortical bone, PLL posterior longitudinal ligament
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X