Quadrilateral Space

Quadrilateral space   Quadrilateral Space
  1. Teres minor
  2. Triceps (long head)
  3. Teres major
  4. Humerus
  5. Axillary Nerve
  6. Posterior humeral circumflex artery

See Quadrilateral Space Syndrome.

Teres kuschle atrophy

Oblique Sagittal MRI of the Shoulder demonstrating Teres Minor atrophy from Quadrilateral Space Syndrome.


  1. Infraspinatus
  2. Teres Minor
  3. Subscapularis
  4. Supraspinatus