Rheumatology

1. Inferior Glenoid Tubercle (origin of the triceps tendon long head)
2. Triceps Long Head
3. Teres Minor Muscle

1. Infraspinatus: Transverse
2. Teres Minor: Transverse
3. Inferior Glenoid Tubercle of the Scapula
4. Posterior Deltoid
5. Triceps Tendon Long Head

1. Inferior Glenoid Tubercle (where the attachment of the triceps tendon short head is taking place)
2. Triceps Tendon Long Head
3. Bony Ridge on Posterior Scapula that Separates Teres Minor from Infraspinatus

1. Posterior Acromion Process
2. Posterior Deltoid
3. Infraspinatus Muscle
4. Infraspinatus Tendon/Central Aponeurosi
5. Infraspinatus Muscle
6. Sagittal Humeral Head

3. Intramuscular Septum (central aponeurosis) of the Infraspinatus

4. Spine of the Scapula

1. Posterior Glenoid
2. Bony Cortex of the Scapula
3. Intramuscular Septum of the Muscle Belly

1. Deltoid Fascia Septation
2. Posterior Deltoid
3. Middle Deltoid
4. Infraspinatus Tendon
5. Humeral Head
6. Middle Facet of the Greater Tuberosity

Note: In this image, the patient’s shoulder is internally rotated.

1. Posterior Deltoid Muscle
2. Infraspinatus Tendon
3. Spinoglenoid Notch/Groove
4. Posterior Glenoid
5. Joint Capsule
6. Posterior Labrum
7. Humeral Head