LKnative – Interscalene BP block

Anatomy of the brachial plexus

The brachial plexus (BP) innervates the upper limb

The BP originates from five spinal nerve roots: C5 to T1

The shoulder is innervated by the suprascapular nerve and the axillary nerve. They both originate from the spinal nerve roots C5 and C6

Anaesthesia of the shoulder requires blockade of the BP proximal to the level of the trunks, because the suprascapular nerve branches off the superior trunk

Page 2:

The bone innervation of the shoulder

The shoulder and the shoulder joint is innervated by the axillary nerve and the suprascapular nerve

Minor contributions from the long thoracic nerve and capsular filaments from the infraspinatus nerve are not clinically significant