Shoulder surgery is the second orthopedic operation cause post operative pain Interscalene block is the standard block for shoulder surgery but it cause phrenic nerve block and diaphragmatic hemipareses Iso block is the block used to block the brachial plexuses cord and suprascapular nerve And paracoracoid subscapularis block supra scapular nerve in supra scapular fosa and axillary nerve as it curves around humeral head

Two groups Group S for paracoracoid subscapularis block Group I for iso block Twenty patients for para coracoid subscapularis block with ultra sonography 50 mm 22G needle inserted anterior to the fascia and 15ml o.5% bupivicaine injected another twenty patients for iso block a linear probe of ultrasound is placed in the infraclavicular region to identify the cords the needle is inserted 2-3cm superior to the clavicle and advanced in.plane posterior to the clavicle toward the cods and 25ml local anaesthesia is injected

Inclusion Criteria:

• male or female patient >20year for shoulder surgery American Society of anaesthesiologist physical state 1 to2

Exclusion Criteria:

• refusal of patient Systemic infection Local infection Neurological or respiratory disease