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. Author manuscript; available in PMC: 2015 Mar 8.
Published in final edited form as: J Bone Miner Res. 2014 Oct;29(10):2193–2202. doi: 10.1002/jbmr.2257

Table 3.

Strength, Cortical, and Trabecular Parameters of the Distal Radius and DXA Regional Areal BMD for Male Subjects With a Childhood DFF (Mild Trauma, Moderate Trauma, All DFF Subjects) and Nonfracture Controls

Male DFF subjects
Male controls
(n = 75)		 Mild trauma
(n = 37)		 Moderate trauma
(n = 36)		 All DFF subjects
(n = 73)		 pa pb pc
Distal radius micro–finite element strength parameters
  Failure load (N) 5832 ± 109 5353 ± 154 5995 ± 161 5661 ± 113 0.024 0.637 0.266
  Fall load-to-strength ratio 0.497 ± 0.010 0.543 ± 0.014 0.482 ± 0.014 0.514 ± 0.0101 0.013 0.639 0.212
Distal radius cortical parameters
  Ct.A (mm2) 76.3 ± 1.6 70.0 ± 2.2 82.5 ± 2.3 76.0 ± 1.7 0.041 0.061 0.834
  Ct.Th (mm) 1.07 ± 0.02 1.01 ± 0.03 1.15 ± 0.03 1.07 ± 0.02 0.131 0.121 0.940
  EC (mm) 58.7 ± 0.7 58.3 ± 1.0 57.7 ± 1.0 58.0 ± 0.7 0.933 0.698 0.521
  PC (mm) 81.6 ± 0.7 80.0 ± 1.0 80.5 ± 1.1 80.3 ± 0.7 0.390 0.640 0.206
  Ct.vBMD (mg/cm3) 941 ± 4 936 ± 5 954 ± 5 944 ± 4 0.708 0.096 0.496
  Ct.TMD (mg/cm3) 961 ± 3 956 ± 5 974 ± 5 964 ± 3 0.505 0.080 0.593
  Ct.Po (%) 1.54 ± 0.09 1.41 ± 0.12 1.47 ± 0.13 1.44 ± 0.09 0.641 0.878 0.430
Distal radius trabecular parameters
  BV/TV 0.175 ± 0.003 0.161 ± 0.004 0.172 ± 0.005 0.166 ± 0.003 0.014 0.763 0.037
  Tb.N (1/mm) 2.15 ± 0.02 2.04 ± 0.03 2.10 ± 0.03 2.07 ± 0.02 0.011 0.345 0.011
  Tb.Th (mm) 0.082 ± 0.001 0.079 ± 0.002 0.082 ± 0.002 0.080 ± 0.001 0.392 0.985 0.493
  Tb.Sp (mm) 0.39 ± 0.01 0.42 ± 0.01 0.40 ± 0.01 0.41 ± 0.01 0.003 0.378 0.006
DXA regional aBMD
  UD radius (g/cm2) 0.572 ± 0.007 0.540 ± 0.010 0.587 ± 0.010 0.563 ± 0.008 0.024 0.444 0.368
  Total radius (g/cm2) 0.806 ± 0.008 0.764 ± 0.011 0.821 ± 0.011 0.792 ± 0.008 0.003 0.468 0.182
  Spine (g/cm2) 1.253 ± 0.016 1.197 ± 0.023 1.228 ± 0.023 1.212 ± 0.016 0.092 0.632 0.082
  FN (g/cm2) 1.134 ± 0.017 1.045 ± 0.025 1.133 ± 0.025 1.088 ± 0.018 0.007 0.999 0.065
  Trochanter (g/cm2) 0.969 ± 0.016 0.877 ± 0.022 0.934 ± 0.023 0.905 ± 0.016 0.002 0.363 0.005
  Total hip (g/cm2) 1.162 ± 0.017 1.071 ± 0.023 1.144 ± 0.024 1.107 ± 0.017 0.003 0.767 0.020
  Total body (g/cm2) 1.323 ± 0.010 1.265 ± 0.014 1.302 ± 0.014 1.283 ± 0.010 0.002 0.415 0.006

Values are presented mean ± SEM (adjusted for age, height, weight) and p values. Significant p values are in bold.

DXA = dual-energy X-ray absorptiometry; BMD = bone mineral density; DFF = distal forearm fracture; Ct.A = cortical area; Ct.Th = cortical thickness; EC = endocortical circumference; PC = periosteal circumference; Ct.vBMD = cortical volumetric bone mineral density; Ct.TMD = cortical tissue mineral density; Ct.Po = cortical porosity; BV/TV = bone volume/total volume; Tb.N = trabecular number; Tb.Th = trabecular thickness; Tb.Sp = trabecular separation; aBMD = areal BMD; UD = ultradistal; FN = femoral neck.

a

p = controls versus mild trauma subjects, using Dunnett’s adjustment for multiple comparisons.

b

p = controls versus moderate trauma subjects, using Dunnett’s adjustment for multiple comparisons.

c

p = controls versus all DFF subjects.