Fig. 1
(A, B) Initial radiographs show a type II periprosthetic femoral fracture with a very distal location. Intraoperatively, the loose femoral component was recognized and was needed to be revised.
(C, D) Since the tibial component was stable, only the femoral side was revised using a long stem component which was cemented to the metaphysic and press fit into the diaphysis.
Fig. 2
(A, B) Initial radiographs show a type III periprosthetic femoral fracture in an 82 years old female with severe osteoporosis. A distal femoral replacement was performed because of small size and poor bone quality of the distal fragement. Also since the tibial component was malpositioned (varus fitting) tibial revision was performed simultaneously.
(C, D) After a distal femoral replacement postoperative radiographs show good alignment.
Fig. 3
(A) Anteroposterior and lateral radiographs show a type IIB periprosthetic tibial fracture. Severe osteolysis around tibial stem is observed.
(B) Revision arthroplasty with a cemented long stem component was performed.
(C) After 6 years postoperatively the followup radiographs show healed fracture site.
Fig. 4
(A) Initial radiographs show a type IVB periprosthetic tibial fracture with component loosening.
(B) This fracture was treated with revision arthroplasty using constrained prosthesis and cerclage wiring of the tibial tubercle.
Table 1Classification for postoperative periprosthetic femoral fractures
Table 2Classification for postoperative periprosthetic tibial fractures