The vertical infraclavicular block (VIB) of the brachial plexus is commonly used to provide local anesthesia (LA) of the upper limb. The original method involves LA injection at the mid-point of an infraclavicular line between acromion and jugular fossa. However, this method is ineffective in adult patients with variant anatomy. Two modified VIB methods have been previously suggested. This prospective observational, clinical study compared both modified VIB approaches. The study showed that modified VIB is easy, efficacious, and applicable to all adult patients; including those with small stature, extreme tallness, or variant anatomy.
Keywords: Brachial plexus block; clinical efficacy; variant anatomy; vertical infraclavicular block.