Interscalene

indications:

-shoulder, lateral clavicle, ACJ, proximal humerus

-elbow (low interscalene)

-not good for hand (should use axillary/infraclav)

sitting

complications:

Horner's syndrome

Occurence of ipsilateral ptosis, hyperemia of the conjuctiva, and nasal congestion is common and it is dependent on the site of injection (less common with the low intrascalene approach) and total volume of local anesthetic injected; the patients should be instructed on the occurence of this syndrome and reassured about its benign nature

Phrenic Nerve paralysis (CONFIRMED!)