radiographic and clinical comparison of 20 surgically documented pylon and ten trimalleolar fractures revealed four major features of pylon fractures distinguishing them from trimalleolar fractures : ( a ) the presence of profound distal-tibial comminution , ( b ) intra-articular extension of tibial fractures through the dome of the plafond , ( c ) the presence of a fractured talus , and ( d ) anatomic relationship of the lateral malleolus to the talus at the level of the ankle mortise .
C0016658
fractures
C0332715
intra-articular