Boundaries of quadrilateral space include all except -: (A) Teres major, (B) Long head of triceps, (C) Neck of humerus, (D) Deltoid
Answer is D. -        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.