Evaluation of Contrast Extravasation as a Diagnostic Criterion in the Evaluation of Arthroscopically Proven HAGL/pHAGL Lesions
Table 1
Cohort group (all patients arthroscopically proven HAGL tears).
Age
Gender
Laterality of IGL
Anterior or posterior HAGL
Extravasation to any site
Juxtahumeral space
Quadrilateral space
Paramuscular space
Intramuscular space
Reader 1
Reader 2
Reader 1
Reader 2
Reader 1
Reader 2
Reader 1
Reader 2
Reader 1
Reader 2
44
Female
Right
Anterior
Yes
Yes
No
No
Yes
Yes
No
No
No
No
16
Female
Left
Anterior
No
No
No
No
No
No
No
No
No
No
32
Female
Right
Anterior and Posterior
Yes
Yes
No
No
Yes
Yes
No
No
No
No
21
Male
Left
Anterior
Yes
Yes
No
No
Yes
Yes
No
No
No
No
15
Female
Right
Anterior
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
19
Male
Left
Posterior*
Yes
Yes
No
No
No
No
Yes (IS-TM)
Yes (IS-TM)
Yes (TM)
Yes (TM)
21
Male
Left
Posterior*
Yes
Yes
No
No
No
No
No
No
Yes (TM)
Yes (TM)
21
Male
Right
Anterior*
Yes
Yes
Yes
Yes
No
No
No
No
No
No
16
Female
Right
Anterior*
Yes
Yes
No
No
Yes
Yes
No
No
No
No
18
Male
Right
Posterior
Yes
Yes
No
No
Yes
Yes
Yes (Ant SS)
Yes (Ant SS)
No
No
21
Male
Right
Anterior*
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
15
Female
Right
Posterior
No
No
No
No
No
No
No
No
No
No
TM = Teres minor. IS-TM = Paramuscular space between infraspinatus and teres minor. Ant SS = Paramuscular space anterior to subscapularis. = Torn ligament was directly visualized on MR arthrogram also. Sensitivity of extravasation to any site in detecting HAGL lesions: 83%.
