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Table 2 Relative impairments in symptomatic shoulder compared to opposite shoulder in patients with SIS reporting no pain in the opposite shoulder within the last 6 months (n = 87)

From: Glenohumeral and scapulothoracic strength impairments exists in patients with subacromial impingement, but these are not reflected in the shoulder pain and disability index

 

Numbera

Asympt. shoulder

Sympt. shoulder

Relative Deficitb (95%CI)

p=

Abd-ROM, ° ± SD

77

164° ±14

116° ±42

29.5%

(23.9–35.1%)

<.0001

IR-ROM, ° ± SD

69

141° ±11

124° ±15

11.9%

(9.2–14.6%)

<.0001

Abd-Strength, Nm ± SD

72

53.1 Nm ±33.0

37.6 Nm ±28.9

29.3%

(23.7–34.9%)

<.0001

ER-Strength, Nm ± SD

72

19.9 Nm ±8.3

13.9 Nm ±9.9

32.8%

(26.4.-39.2%)

<.0001

HE-Strength, Nm ± SD

43

25.6 Nm ±15.6

21.2 Nm ±16.3

18.0%

(9.4–26.5%)

.0001

Pro-Strength, N ± SD

49

234.0 N ± 131.5

204.9 N ± 121.4

8.4%

(0.7–16.0%)

.032

  1. aFor all tests, some data are missing because the patients had difficulties performing the tests or due to insufficient time to completion of the tests. The number of missing data due to difficulties is: Abd-ROM, 2 missing; IR-ROM, 8 missing; Abd-Strength, 3 missing; ER-Strength, 3 missing; HE-Strength, 22 missing; Pro-Strength, 13 missing. The number of missing data due to time is: Abd-ROM, 8 missing; IR-ROM, 10 missing; Abd-Strength, 12 missing; ER-Strength, 12 missing; HE-Strength, 22 missing; Pro-Strength, 25 missing
  2. bCalculated as the difference divided by the test result in the asymptomatic shoulder