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Table 3 Values of the bending-compression tests

From: Development and mechanical testing of a short intramedullary nail for fixation of femoral rotational osteotomy in cerebral palsy patients

Bending-compression test

Implant

Specimen

Repetition

Relative stiffness (N/mm)

Mean (±SD)

Linear displacement (mm)

Mean (±SD)

  

1

225.47

 

4.11

 
 

1

2

228.10

227.88 (2.30)

4.05

4.06 (0.04)

  

3

230.06

 

4.02

 
  

1

272.62

 

3.35

 
 

2

2

272.38

276.87 (7.56)

3.22

3.20 (0.15)

  

3

285.60

 

3.05

 
  

1

316.71

 

3.08

 

Nail

3

2

304.34

306.73 (9.03)

3.28

3.22 (0.13)

  

3

299.13

 

3.31

 
  

1

258.77

 

3.54

 
 

4

2

309.96

300.71 (38.17)

2.99

3.12 (0.37)

  

3

333.41

 

2.83

 
  

1

218.60

 

4.02

 
 

5

2

227.81

229.13 (11.25)

3.81

3.82 (0.20)

  

3

240.99

 

3.62

 
  

1

420.74

 

2.21

 
 

1

2

447.78

435.13 (13.60)

2.08

2.13 (0.07)

  

3

436.87

 

2.11

 
  

1

299.74

 

3.36

 

Plate

2

2

318.07

298.44 (20.32)

2.89

3.19 (0.26)

  

3

277.50

 

3.30

 
  

1

393.32

 

2.36

 
 

3

2

355.89

365.29 (24.71)

2.65

2.56 (0.18)

  

3

346.67

 

2.67

 
  

1

388.25

 

2.43

 
 

4

2

409.20

413.62 (27.84)

2.34

2.28 (0.18)

  

3

443.41

 

2.09

 
  

1

447.12

 

2.08

 
 

5

2

451.98

432.38 (29.83)

2.03

2.12 (0.13)

  

3

398.05

 

2.27

 
  1. Values found in the bending-compression tests according to the groups fixed with plate and nail and variability between repetitions of the mechanical tests.