Fig. 7From: Classification and reconstruction of femoral bone defect in the revision of aseptic loosening of distal femoral endoprostheses: a 10-year multicenter retrospective analysisa: The prosthesis was displaced before surgery, the isthmus was intact, and the prosthesis broke through the cortical bone, which belonged to type IIb. b: A longer and thicker stem prosthesis was used for revision during the surgery. c: The prosthesis was in a good position 2Â years after surgeryBack to article page