Place the high-frequency linear probe in the axial plane in the corner between the clavicle and coracoid process
Visualize the long thoracic nerve where it runs across the anterior serratus muscle (see second next page)
Insert the needle with in-plane technique from the medial end of the probe and advance the needle until the needle tip is in contact with the target nerve
Inject 5 mL of local anaesthetic until complete perineural spread is obtained
The position of the probe to scan the long thoracic nerve
