Table 4 Multiple regression analysis describing micromechanical variables (elastic modulus (E*), ratio (H/E*) and Wplast/Wtot) as a function of the degree of mineralization of bone (DMB), crystallinity, carbonation, mineral/matrix, mineral maturity and collagen maturity.

From: Compositional and mechanical properties of growing cortical bone tissue: a study of the human fibula

Variables

Final adjusted R²

Part correlation (β)

p-value

Dependent

Independent

JUVENILES GROUP

E*

DMB

0.676

0.493

0.006

Crystallinity

−0.141

0.474

Carbonation

0.687

0.000

Mineral/ Matrix

0.549

0.014

Mineral maturity

0.129

0.515

Collagen maturity

−0.224

0.322

H/E*

DMB

0.154

0.086

0.744

Crystallinity

−0.027

0.932

Carbonation

−0.471

0.054

Mineral/ Matrix

0.189

0.569

Mineral maturity

−0.447

0.172

Collagen maturity

−0.314

0.390

Wplast/Wtot

DMB

0.256

−0.103

0.678

Crystallinity

0.143

0.631

Carbonation

0.386

0.088

Mineral/ Matrix

−0.580

0.073

Mineral maturity

0.514

0.098

Collagen maturity

0.382

0.267

ADULTS GROUP

E*

DMB

0.479

0.736

0.004

Crystallinity

−0.002

0.994

Carbonation

−0.144

0.566

Mineral/ Matrix

−0.064

0.838

Mineral maturity

0.010

0.972

Collagen maturity

0.036

0.829

H/E*

DMB

0.268

−0.620

0.031

Crystallinity

0.706

0.016

Carbonation

−0.361

0.229

Mineral/ Matrix

0.285

0.441

Mineral maturity

−0.905

0.009

Collagen maturity

0.433

0.039

Wplast/Wtot

DMB

0.330

0.482

0.075

Crystallinity

−0.903

0.002

Carbonation

0.196

0.490

Mineral/ Matrix

−0.262

0.459

Mineral maturity

0.884

0.008

Collagen maturity

−0.377

0.058

  1. Multiple regressions are done separately for each category (Juvenile or Adult) with osteonal and interstitial bone pooled. Bold values indicate significant results.