Regional Anesthesia, Femoral Nerve Block (IMAGE) Nationwide Children's Hospital Caption Dr. Tarun Bhalla of Nationwide Children`s Hospital uses an ultrasound machine to locate and numb specific nerves during a recent knee surgery on a 15-year old patient. Credit Nationwide Children's Hospital Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.