Abstract:
Interscalene block is commonly associated with reversible ipsilateral phrenic nerve block,
recurrent laryngeal nerve block, and cervical sympathetic plexus block, presenting as
Horner’s syndrome. We report a very rare Pourfour Du Petit syndrome which has a
clinical presentation opposite to that of Horner’s syndrome in a 24‐year‐old male who
was given interscalene block for open reduction and internal fixation of fracture upper
third shaft of left humerus.
