Boundaries of quadrilateral space include all except -
-        Boundaries of quadrilateral space

   Superior- Sub scapularis, Shoulder joint capsule and teres minor
   Medial- Long head of triceps
   Lateral- Surgical neck of humerus
   Inferior- Teres major
   Content- axillary nerve and posterior circumflex humeral vessels.
Teres major
Long head of triceps
Neck of humerus
Deltoid