Retroclavicular Versus Costoclavicular Approach for Infraclavicular Brachial Plexus Block

The primary aim of this study is to compare needle shaft visibility between the retroclavicular approach and costoclavicular approach for infraclavicular brachial plexus block in patients undergoing elective upper limb surgery. Secondary aim is to investigate the differences between the two groups in sensorial block success rate, block performance time, block performance related pain, motor block success rate, surgical success rate, complications, patient satisfaction, use of supplemental local anesthetic, use of analgesic.