1 Department of Clinical Medicine - Department of Paediatrics, Department of Clinical Medicine, Health, Aarhus University2 Section for Marine Geology, Faculty of Science, Aarhus University, Aarhus University3 Institut for Arkitektur og Design4 unknown5 Ortopædi og Intern Medicin6 Department of Clinical Medicine - Department of Paediatrics, Department of Clinical Medicine, Health, Aarhus University
a randomized radiostereometric analysis with 2 years of follow-up
"Trabecular Metal Cone" (TM Cone) (Zimmer, Inc, Warsaw, Ind) for reconstruction of bone loss in the proximal tibia during revision total knee arthroplasty is now optional. Forty patients were randomized to receive revision total knee arthroplasty with or without TM Cone (No TM Cone). The Anderson Orthopaedic Research Institute bone loss classification and NexGen revision system were used. Radiostereometric analysis was performed with 24 months of follow-up. Maximum total point motion: stable migration was seen in the TM Cone group. No statistically significant difference was found. Segment motion analysis at 24 months showed the same net direction of rotation for the groups around the y-, z-axis and around the x-, y-axis for translation. Tibial revision implants with TM Cone result in an early stable situation with less irregular migration pattern than revision without TM Cone.