Fig. 8From: Classification and reconstruction of femoral bone defect in the revision of aseptic loosening of distal femoral endoprostheses: a 10-year multicenter retrospective analysisa: The femoral canal is widened due to preoperative bone absorption around the prosthesis, and the isthmus can be used to fix the length < 5 cm, which belongs to type III. b: A custom short stem prosthesis was used for revision during the operation. c: The prosthesis was in a good position 2 years after surgeryBack to article page