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Table 2 Primary USG Measurement

From: Alteration in coracohumeral ligament and distance in people with symptoms of subcoracoid impingement

USG outcomes

 

SIS (n = 20)

 

SSCL (n = 20)

 
 

Affected side

Non-affected side

Affected side

Non-affected side

CHL thickness (mm)

 

2.2 ± 0.4 (2.2)*,#

1.6 ± 0.2 (1.6)*,#

2.5 ± 0.3 (2.4)*,#

1.8 ± 0.3 (1.7)*,#

CHD (mm)

Neutral Rotation

11.4 ± 2.4 (12.0)

11.5 ± 2.5 (11.8)

10.3 ± 2.3 (10.3)

10.8 ± 2.2 (11.8)

External Rotation

14.2 ± 2.7 (14.5)

14.5 ± 2.7 (15.0)

13.2 ± 2.5 (13.4)

13.6 ± 2.0 (13.5)

Internal Rotation

10.3 ± 2.3 (9.7)

10.8 ± 2.2 (11.0)

9.4 ± 2.6 (9.8)

10.2 ± 2.0 (9.5)

IRFA

9.9 ± 2.4 (9.8)

11.0 ± 1.8 (11.2) *

8.7 ± 2.3(8.8)

9.6 ± 1.7 (9.7) *

AHD (mm)

8.9 ± 1.3 (8.6)

8.8 ± 1.6 (8.6)

9.4 ± 1.9 (8.8)

9.0 ± 1.3 (9.2)

60°

5.3 ± 1.1 (5.1)

5.5 ± 1.4 (5.1)

5.5 ± 1.4 (5.1)

5.5 ± 1.0 (5.5)

Tendon thickness (mm)

SSP

5.9 ± 0.9 (6.0)

5.4 ± 0.6 (5.4)

6.4 ± 1.2 (6.3)

5.7 ± 1.0 (5.3)

SSC

4.9 ± 0.6 (4.9)*

5.0 ± 0.7 (5.0)

5.6 ± 0.9 (5.4)*

5.3 ± 0.8 (5.2)

Occupation ratio (%)

SSP/AHD

67.4 ± 12.1 (67.5)

63.7 ± 14.9 (59.0)

68.7 ± 12.4 (67.5)

63.4 ± 9.8 (63.5)

SSC/CHDNR

45.0 ± 11.0 (42.0)*

45.2 ± 12.8 (41.0)

56.2 ± 12.5 (54.0)*

50.6 ± 10.2 (52.0)

  1. SIS shoulder impingement syndrome group, SSCL subscapularis lesion group
  2. mean ± standard deviation (median), USG ultrasonography, CHL coracohumeral ligament, CHD-coracohumeral distance, IRFA internal rotation + 90° forward flexion + adduction, LHB long head of biceps, AHD acromiohumeral distance, SSP supraspinatus, SSC subscapularis, CHDNR coracohumeral distance in neutral rotation
  3. *significance difference between the 2 groups, p < 0.05
  4. #significance difference between affected side and non-affected side, p < 0.0001