Perifascial plane versus perineural approaches for ultrasound-guided axillary block: go to the simplest?

Background: Ultrasound-guided axillary block is widely used in daily practice for upper limb orthopedic surgery. A simple, safe, efficacious and time-saving technique is mandatory to optimize surgical turnover and costs. In this perspective, we compared, in a randomized, single-blinded study, a standardized perifascial technique and the selective perineural technique.