Upper boundary of quadrangular space is formed by:: (A) Teres major, (B) Teres minor, (C) Long head of triceps, (D) Surgical neck of humerus
Answer is B. Boundaries of quadrangular spaceAbove/superior: the subscapularis and teres minorBelow/inferior: the teres majorMedially: the long head of the triceps brachiiLaterally: the surgical neck of humerus