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Table 2 Quality of A1 pulley release, complications, and minimal distance to the nearest collateral nerve

From: A1 pulley cutting potential and safety of three ultrasound-guided percutaneous A1 pulley release techniques for trigger finger: a cadaveric study

 

Technique

N (n = 18)

NK (n = 19)

K (n = 19)

p

Percentage of the total longitudinal pulley length released (%)

18.24 ± 31.09

51.61 ± 28.34

54.63 ± 33.72

0.002&

Cut pulley length (mm)

2.02 ± 3.46

5.55 ± 3.07

6.29 ± 4.07

0.002¥

Complete pulley release (n)

1

1

3

0.602#

Cut pulley length greater than 50% (n)

3

11

11

0.016#

Intact pulley (n)

10

1

2

0.000#

Complications (n)

 Neurovascular

-

-

-

-

 Minor tendon injury

-

2

1

0.766#

 Major tendon injury

-

1

-

1.000#

 A2 pulley injury

-

1

1

1.000#

Minimal transverse distance (mm)

4.40 (2.27)

2.96 (1.40)

3.46 (1.24)

0.129&

  1. Continuous data are expressed as the means ± SDs, whereas discrete data are expressed as n. &: p for ANOVA. #: p for Fisher’s exact F test. ¥: p for Kruskal-Wallis test. K: knife technique; N: needle technique; NK: needle-knife technique