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Table 5 von Mises stress of the femoral head before and after operation under different loads

From: Evaluation of the short-term curative effect of closed reduction in the treatment of developmental dysplasia of the hip based on three-dimensional magnetic resonance imaging finite element analysis

von Mises

Single-leg standing (MPa)

 

2-leg standing (MPa)

preoperative

Postoperative

t

P

preoperative

postoperative

t

p

1 × body weight

1.06 ± 0.20

0.59 ± 0.11

20.149

 < 0.01

0.75 ± 0.14

0.49 ± 0.09

20.032

 < 0.01

2 × body weight

2.04 ± 0.38

1.13 ± 0.21

20.666

 < 0.01

1.66 ± 0.31

0.97 ± 0.18

20.632

 < 0.01

3 × body weight

3.02 ± 0.56

1.80 ± 0.34

20.616

 < 0.01

2.41 ± 0.45

1.38 ± 0.26

20.855

 < 0.01