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Table 2 Correlation coefficients and p values for the three test forces versus CT parameters on micro-CT and multislice CT

From: Quantitative CT-based bone strength parameters for the prediction of novel spinal implant stability using resonance frequency analysis: a cadaveric study involving experimental micro-CT and clinical multislice CT

  

Micro-CT (n = 68)

Multislice CT (n = 58)

ρ

p

ρ

p

Peak torque versus

Volume bone mineral density

0.520

5.46 × 10−6*

0.463

2.50 × 10−4*

Bone volume/total volume

0.550

1.19 × 10−6*

0.334

0.0103

Bone surface/total volume

0.811

4.96 × 10−17*

0.730

7.87 × 10−11*

Trabecular thickness

0.427

2.79 × 10−4*

0.479

1.41 × 10−4*

Trabecular separation

− 0.588

1.38 × 10−7*

− 0.267

0.0424

Trabecular number

0.582

1.95 × 10−7*

− 0.489

9.66 × 10−5*

Structure model index

− 0.437

1.96 × 10−4*

N.A.

N.A.

Node number/total volume

0.428

2.71 × 10−4*

− 0.069

0.608

Pull-out versus

Volume bone mineral density

0.453

1.06 × 10−4*

0.414

0.00124*

Bone volume/total volume

0.467

5.86 × 10−5*

0.320

0.0143

Bone surface/total volume

0.730

1.64 × 10−12*

0.693

1.64 × 10−9*

Trabecular thickness

0.361

0.00250*

0.416

0.00118*

Trabecular separation

− 0.519

5.68 × 10−6*

− 0.272

0.0391

Trabecular number

0.529

3.54 × 10−6*

− 0.411

0.00137*

Structure model index

− 0.360

0.00253*

N.A.

N.A.

Node number/total volume

0.483

3.02 × 10−5*

− 0.108

0.421

Implant stability quotient value versus

Volume bone mineral density

0.0722

0.558

− 0.103

0.444

Bone volume/total volume

0.0666

0.589

− 0.0760

0.571

Bone surface/total volume

0.237

0.0521

0.201

0.130

Trabecular thickness

− 0.0542

0.661

− 0.106

0.427

Trabecular separation

− 0.158

0.197

0.0770

0.566

Trabecular number

0.264

0.0299

0.0830

0.536

Structure model index

− 0.0134

0.914

N.A.

N.A.

Node number/total volume

0.607

4.01 × 10−8*

0.515

3.52 × 10−5*

  1. CT computed tomography, N.A. not available
  2. *Signifiant p value