Isolated fracture of the posterior medial tubercle of the talus is a rare injury, generally thought to result from a pronation-dorsiflexion force causing avulsion of the insertion of the posterior talotibial ligament. Originally described by Cedell, the fracture has subsequently been reported three times to our knowledge, with all cases being attributed to indirect trauma. We describe an isolated fracture of the posterior medial tubercle of the talus caused by direct trauma. The fracture of the posterior medial tubercle remained ununited, failed to respond to conservative therapy, and was treated successfully with surgical excision.
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