<prompt> 22 year old man, brought to ED by ambulance following a rugby injury.which of the following is false regarding the fracture shown?Comminuted fracture of TibiaDoes not involve aicular surfaceclosed fracturePosteriorly displaced fracture  <response>: This man has a comminuted fracture of the proximal diametaphysis of the tibia. It does not involve the aicular surface. The fracture is posteriorly displaced based on the position of the distal fragment. Most impoantly, there is gas lucency in the soft tissues around the fracture, and also in the knee joint, indicating that this is an open fracture. 