Medial versus lateral approach in ultrasound-guided costoclavicular brachial plexus block for upper limb surgery: a randomized control trial.

Introduction: Costoclavicular brachial plexus block has become a procedure of choice for surgical anaesthesia or analgesia in upper limb surgery. The technique is not standardised yet, and two approaches are currently employed: the medial and lateral approach. Our study aims to compare the two approaches in terms of performance time and patient-specific clinical outcomes.