Current guidelines for procedural injections e.g. spinal nerve blocks, intercostal blocks, require the length of needle to ensure that the needle tip is inserted to the nerve that needs to be blocked. The use of long and larger gauage needles may be associated with complications from needle insertion including trauma to the structures traversed. Utilizing laws of physics, including the equation of continuity and the principle of conservation of mass, and incorporating these into the practice of regional anesthesia, we describe the Sota Omoigui Short Needle technique, for procedural injections and increased safety of such injections. We have employed this short needle technique in more than 500 procedural injections with good success and no complications.