IntroductionFixation of humeral shaft fractures with a plate and screws can endanger the neurovascular structure if proper care is not taken. No studies to our knowledge have studied the risk of iatrogenic radial nerve and/or profunda brachii artery (RNPBA) injury from each screw hole of a 4. 5 mm narrow dynamic compression plate (narrow DCP). https://iguanasellers.shop/product-category/fineliner/