Infraspinatus muscle

Authors
Affiliations

Nathaniel 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

Schematic of Rotator Cuff Muscles (anterior view)1 1: Supraspinatus 2: Infraspinatus 3: Teres Minor

Schematic of Rotator Cuff Muscles (anterior view)1
1: Supraspinatus
2: Infraspinatus
3: Teres Minor

Schematic of Rotator Cuff Muscles (posterior view)1 4: Subscapularis

Schematic of Rotator Cuff Muscles (posterior view)1
4: Subscapularis

Rotator Cuff (anterior view)1

Rotator Cuff (anterior view)1

Rotator Cuff (lateral view)1

Rotator Cuff (lateral view)1

Rotator Cuff (posterior view)1

Rotator Cuff (posterior view)1

Origin

Infraspinous Fossa of scapula1

Insertion

Greater tubercle of Humerus1

Innervation

Suprascapular n. (C4, C5, C6)1

Action

GHJ: External rotation, Stabilization1

Test

Muscle Tear

To read
  • Traumatic full-thickness infraspinatus and teres minor tendon tears2

References

1.
Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.
2.
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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