Skip to main content

Table 2 Contact pressure data from age-matched control and all DDH patients' hips*

From: Cartilage contact pressure elevations in dysplastic hips: a chronic overload model

 

Control

Patient 1

Patient 2

Patient 3

Patient 4

Patient 5

Patient 6

 

Right

Left

Right

Left

Right

Right

Left

Right

Left

Right

Left

Right

 

Normal

asym

DDH

DDH

DDH

asym

DDH

asym

asym

DDH

DDH

asym

Severin Classification

I

I

I

I

I

I

II

I

I

II

III

I

Acetabulum

            

Increment

12

12

5

12

12

12

12

6

12

5

12

12

Max pressure (MPa)

1.754

4.945

6.984

3.563

8.298

4.922

5.25

4.526

7.05

6.87

8.587

4.83

Max cum press (MPa-sec/cycle)

1.145

3.192

4.686

2.447

4.699

3.108

3.835

3.463

5.48

5.44

6.553

3.107

Max chronic press (MPa-years)

0

1.926

3.399

0.566

3.416

1.403

2.323

1.852

4.41

4.36

5.764

1.402

Femoral Head

            

Increment

12

12

4

12

12

9

12

3

12

5

12

12

Max pressure (MPa)

1.89

6.462

7.758

3.582

9.58

6.096

6.345

5.15

7.38

9.88

9.091

5.48

Max cum press (MPa-sec/cycle)

1.229

4.702

5.323

3.366

6.604

3.815

3.965

3.827

5.43

6.62

6.437

3.45

Max chronic press (MPa-years)

0

3.419

4.206

0.463

5.828

2.298

2.487

2.313

4.34

5.85

5.617

1.829

  1. *DDH in bold text cells, and asym is asymptomatic contralateral hip