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. 2021 Nov 26;10(23):5544. doi: 10.3390/jcm10235544

Figure 7.

Figure 7

Illustration of Triangular Intramuscular Space (TIS). Subscapular spaces. A: Triangular Intermuscular Space (TIS); superior border: lower margin of Teres Minor, inferior border: upper margin of Teres Major, lateral border: medial margin of the long head of Tricepts. B: Quadrangular Space of Velpeaum; superior border: inferior margin of Teres Minor, inferior border: superior margin of Teres Major, medial border: medial margin of the long head of Triceps, lateral border: medial margin of shaft of Humerus.