“…Some of these articles [5,10,11,14,15,17,21,22,28,[32][33][34]41] did not provide information on the location of the extremity fracture, while others [10,11,14,15,17,21,32,33,41] included hand and feet fractures. Similarly, some studies [3,6,13,19,21,27,29,32,34] did not provide enough data on the type of gun used and others [3,6,13,19,21,23,26,29,33,34,38] reported mixed results; in many cases, the type of gun used could not be identified [3,13,26].…”