This is a protocol for a Cochrane Review (Intervention). The objectives are as follows:

Our objective is to determine if there is sufficient evidence to recommend the infraclavicular block over other approaches to the brachial plexus when providing regional anaesthesia for surgery of the lower arm. To this end, we will attempt to answer the following question: "Is adequate surgical anaesthesia of the lower arm and hand achieved more frequently, with faster onset, with longer duration of post‐operative analgesia, and with lower frequency of complications using an infraclavicular approach compared to other approaches to the brachial plexus?"