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Infraspinatus
Region: Shoulder & Arm Muscles · All shoulder & arm muscles
Infraspinatus at a glance
| Origin | Infraspinous fossa of the scapula |
|---|---|
| Insertion | Middle facet of the greater tubercle of the humerus |
| Actions | Rotates the arm outward (lateral rotation); Stabilises the shoulder joint |
| Nerve supply | Suprascapular nerve (C5–C6) |
More Shoulder & Arm Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.