title: Retrieval analysis of porous-coated components for total knee arthroplasty. A report of two cases.
abstract: Retrieval analysis of two total knee replacements incorporating porous-coated components for biologic fixation was performed. The significant finding in a 63-year-old woman was fracture of the porous-coated metal backing of the tibial component, secondary to aseptic loosening. The significant findings at the time of revision surgery in an 82-year-old woman were nonuniform bone ingrowth (primarily around fixation pegs) and fracture of metal beads from the metal backing of the patellar component.
mesh_terms: D000368:Aged; D001672:Biocompatible Materials / Q000627:therapeutic use; D005260:Female; D050723:Fractures, Bone / Q000175:diagnosis; D006801:Humans; D007720:Knee Prosthesis; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis
chemical_list: D001672:Biocompatible Materials