💪 Infraspinatus

Brian Lee
Review Pending

Summary

Origins

Infraspinous fossa of the 🦴 scapula

Insertions

Middle facet of the greater tubercle of the humerus

Actions

External (lateral) rotation of the shoulder

Shoulder stabilization as a part of 📓 rotator cuff muscle group

Illustrations

Translations

French

sous-épineux

Russian

Подостная мышца

References

• ⚙️ Glenohumeral Joint
• 📓 Rotator Cuff
• 📕 Goldfinger 1991, 160.
• 📕 Hale And Coyle 1977
  • 108: Rubens, Study of a River God for the Four Rivers
    • “The supraspinatus (I) and the infraspinatus (J) steady the head of the humerus … and assist … the outward rotation and abduction of the arm.”
  • 110: Michelangelo, Standing Nude, Seen from the Back
    • “Below, we can see the infraspinatus (L), …”
    • Left shoulder flexion with external rotation.
  • 114-115, 126, 132, 138, 252 TODO
• Wikipedia