Conventional Versus Posterior Approach in Ultrasound-Guided Parasagittal In-Plane Infraclavicular Brachial Plexus Block

The needle insertion point was over the trapezius muscle sufficiently posterior to allow the needle to pass between the clavicle and the scapula in the direction of the axillary artery. The insertion point was strictly aligned with the long axis of the ultrasound beam i.e. in-plane technique.

The needle insertion point would be at the cephalad (lateral) aspect of the ultrasound probe, beneath the clavicle and medial to the coracoid process. The insertion point was strictly aligned with the long axis of the ultrasound beam i.e. in-plane technique.