Fig. 2From: Periprosthetic proximal femoral fractures in cemented and uncemented stems according to Vancouver classification: observation of a new fracture patternReverse clamshell fracture pattern. In these radiographs, further examples of the reverse clamshell fracture pattern are shown in both cemented and uncemented stems displaying the typical fracture pattern involving the lateral cortex only with preservation of the medial cortexBack to article page