Ultrasound-Guided Percutaneous Electrolysis and Eccentric Exercises for Subacromial Pain Syndrome: A Randomized Clinical Trial
Table 2
Outcome data for shoulder pain and disability.
Mean pain intensity (0–10)
Pretreatment
Middle follow-up
Posttreatment
Electrolysis group
7.0 ± 0.9
3.8 ± 1.0
1.4 ± 1.2
Exercise group
6.8 ± 0.7
5.1 ± 1.2
3.1 ± 2.1
Within-group change score from baseline#
Electrolysis group
−3.2 (−3.9, −2.5)##
−5.6 (−6.4, −4.7)##
Exercise group
−1.7 (−2.2, −1.3)##
−3.7 (−4.6, −2.9)##
Between-group difference in change score
1.5 (0.7, 2.2)##
1.9 (0.7, 3.1)##
Worst pain intensity (0–10)
Pretreatment
Middle follow-up
Posttreatment
Electrolysis group
8.2 ± 1.3
5.1 ± 2.4
2.3 ± 1.2
Exercise group
8.1 ± 1.4
5.3 ± 2.5
4.5 ± 2.4
Within-group change score from baseline#
Electrolysis group
−3.1 (−4.4, −1.7)##
−5.9 (−6.7, −5.0)##
Exercise group
−2.8 (−3.8, −1.6)##
−3.6 (−4.6, −2.5)##
Between-group difference in change score
0.3 (−1.4, 2.0)
2.3 (1.2, 3.3)##
Lowest pain intensity (0–10)
Pretreatment
Middle follow-up
Posttreatment
Electrolysis group
5.8 ± 1.2
3.5 ± 2.3
1.2 ± 1.1
Exercise group
5.0 ± 1.0
3.9 ± 2.3
1.3 ± 1.2
Within-group change score from baseline#
Electrolysis group
−2.3 (−3.4, −1.8)##
−4.6 (−5.8, −3.5)##
Exercise group
−2.1 (−2.9, −1.7)##
−3.7 (−4.5, −2.8)##
Between-group difference in change score
0.2 (−1.1, 1.4)
1.1 (−0.3, 1.5)
DASH (0–100)
Pretreatment
Middle follow-up
Posttreatment
Electrolysis group
57.4 ± 4.0
26.1 ± 10.3
11.1 ± 8.8
Exercise group
57.6 ± 9.2
38.5 ± 11.4
20.8 ± 7.4
Within-group change score from baseline#
Electrolysis group
−31.3 (−35.8, −26.7)##
−46.3 (−52.2, −40.5)##
Exercise group
−19.1 (−24.2, −14.0)##
−36.8 (−42.2, −31.4)##
Between-group difference in change score
12.2 (5.6, 18.9)##
9.5 (1.9, 17.2)##
Data are means ± standard deviations; data are means (95% confidence intervals). #Compared to pretreatment; ##statistically significant differences (). DASH: Disabilities of the Arm, Shoulder, and Hand.
