Infraspinatus muscle

Authors
Affiliations

Nate Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Figure 1: Muscles that move the humerus
Reading list
  • Infraspinatus Muscle
  • MMT

Origin

Infraspinous Fossa of scapula

Figure 2: Left scapula (Posterior view)
Figure 3: Left Humerus (Posterior view)

Insertion

Greater tubercle of Humerus

Innervation

Suprascapular n. (C4, C5, C6)

Action

GHJ: External rotation, Stabilization

Test

Muscle Tear

To read
  • Traumatic full-thickness infraspinatus and teres minor tendon tears

References

1.
Betts JG, Blaker W. Anatomy and Physiology. 2nd ed. OpenStax; 2022. https://openstax.org/details/books/anatomy-and-physiology-2e/?Book%20details
2.
Donnelly JM, Simons DG, eds. Travell, Simons & Simons’ Myofascial Pain and Dysfunction: The Trigger Point Manual. Third edition. Wolters Kluwer Health; 2019.
3.
Neumann DA, Kelly ER, Kiefer CL, Martens K, Grosz CM. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed. Elsevier; 2017.
4.
Weinstock D. NeuroKinetic Therapy: An Innovative Approach to Manual Muscle Testing. North Atlantic Books; 2010.
5.
Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.
6.
Gray H. Anatomy of the Human Body. 20th ed. (Lewis WH, ed.). Lea & Febiger; 1918. https://www.bartleby.com/107/
7.
Cain EL, Andrachuk J, Wilk KE. Traumatic full-thickness infraspinatus and teres minor tendon tears. The Journal of Orthopaedic and Sports Physical Therapy. 2013;43(8):583. doi:10.2519/jospt.2013.0414

Citation

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