A 54YR old male patient met with a road traffic accident and was brough to the ER ,he was unable to move his right arm .x ray shown below . which of the following nerve may be injured in this case ?

AXILLARY NERVE SUPPLY : Posterior cord lower border of pectoralis minor Quadrilateral space Upper lateral cutaneous nerve of arm supplies skin over lower half of deltoid Nerve to deltoid Nerve to teres minor Injury results in loss of sensation over the lower half of the deltoid Weakness of the deltoid and the teres minor * Results from fracture of the surgical neck of the humerus and dislocation of the shoulder joint. * Impossible to test the integrity of the axillary nerve by testing the ability of deltoid to abduct the arm because of severe pain * The presence of a small area of lost or diminished sensation over the inferior half of deltoid enables the diagnosis of axillary nerve injury to be made. REF : MAHESWARI 9TH ED