Table 4 Mean surface pressure (kPa) of the iliopsoas muscle when stem anteversion was changed.

From: Relationship between iliopsoas muscle surface pressure and implant alignment after total hip arthroplasty: a cadaveric study

 

20° of extension

10° of extension

Neutral

10° of flexion

Median

Range

P value

Median

Range

P value

Median

Range

P value

Median

Range

P value

Increased anteversion

106.4

54.0–250.4

0.655

68.8

16.9–163.9

0.18

10.1

2.9–47.0

0.18

3.4

0.3–13.0

0.823

Native anteversion

88.2

22.0–472.2

 

27.8

3.2–201.9

 

4.4

0.4–53.0

 

2.3

0.6–6.4

 

Decreased anteversion

3.8

1.5–88.0

0.002

1.2

0.2–13.6

0.007

0.6

0.1–7.4

0.007

1.0

0.1–2.3

0.025

  1. Values are shown as the median and range. P value are from the Friedman test. For p values of < 0.05 in the Friedman test, individual p values are shown for comparison with native anteversion based on the results of the post hoc test.
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