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Table 3 Mechanical and structural properties of the two groups

From: Comparison of microstructural and mechanical properties of trabeculae in femoral head from osteoporosis patients with and without cartilage lesions: a case–control study

Variable Group 1 Group 2 P value
OP control (N = 18) OP with cartilage lesions (N = 18)
Mechanical properties
Young’s modulus (MPa) 248.5 ± 77.3 192.5 ± 64.4 0.024*
Yield strength (MPa) 5.0 ± 2.3 3.6 ± 1.3 0.032*
Ultimate strength (MPa) 6.7 ± 2.8 4.6 ± 1.4 0.005*
Trabeculae microstructural parameters
BMD 0.26 ± 0.10 0.30 ± 0.08 0.207
BV/TV (%) 16.7 ± 4.4 20.7 ± 6.9 0.044*
BS/BV (mm−1) 21.8 ± 5.2 19.2 ± 7.0 0.219
BS/TV (mm−1) 3.5 ± 0.6 3.6 ± 0.5 0.477
Tb.Th (mm) 0.17 ± 0.03 0.20 ± 0.06 0.041*
Tb.Sp (mm) 0.86 ± 0.14 0.80 ± 0.12 0.141
Tb.N (mm−1) 0.99 ± 0.18 1.03 ± 0.14 0.373
SMI 0.72 ± 0.39 0.72 ± 0.44 0.998
DA 2.56 ± 1.10 2.10 ± 0.33 0.101
Conn.Dn (mm−3) 3.53 ± 1.58 2.77 ± 1.42 0.139
BMDNeck 0.63 ± 0.10 0.68 ± 0.09 0.102
  1. BMD means apparent density, representing the mean density of selected column VOI of the bone column was calculated by CTan and BMDNeck means density of the contralateral femoral neck collected by DEXA. Statistically significant difference at the level P < 0.05*.