Fig. 4From: Classification and reconstruction of femoral bone defect in the revision of aseptic loosening of distal femoral endoprostheses: a 10-year multicenter retrospective analysisThe bone defect involved the isthmus. a: the highest horizontal line of the isthmus. b: the length of can be used for fixation < 5 cm / 2 times the diameter of the medullary cavity. c: the diameter of the medullary cavityBack to article page