Title of article :
The effect of computerized navigation on component alignment in total knee arthroplasty
Author/Authors :
SOARES, Luiz Fernando Machado Madre Teresa Hospital, Brazil , NUNES, Tarcizo Afonso Federal University of Minas Gerais - Faculty of Medicine, Gerais Hospital, Brazil , DE ANDRADE, Marco Antônio Percope Federal University of Minas Gerais - Faculty of Medicine, Gerais Hospital, Brazil , NEYRET, Philippe University of Lyon - Albert Trillat Center, Lyon Nord Group Hospital - Department of Orthopedics, France , BADET, Roger St. Vincent de Paul Clinic, France
Abstract :
Objective: The aim of this retrospective cross-sectional study was to evaluate the effect of computerassisted total knee arthroplasty (TKA) on component alignment. Methods: The radiographs of 20 patients who underwent computer-assisted TKA within a two-year period were analyzed with respect to the mechanical femorotibial, mechanical femoral, mechanical tibial angles (mFTA, mFA and mTA, respectively) and the tibial slope (σ). Results: The mean postoperative mFTA (179.7°) was significantly improved when compared to the preoperative value (175.45°) (p=0.012). The mean postoperative mFA was significantly reduced (p=0.035) in comparison with the preoperative mean (89.1° and 90.6°, respectively). The mean postoperative mTA was exactly 90.0°, while the preoperative mean was significantly lower (87.7°; p=0.003). Mean tourniquet time during TKA was 109.5 minutes. Conclusion: Computer navigation in TKA appears to be a reliable system which facilitates implant positioning and component alignment.
Keywords :
Computer navigation , gonarthrosis , implant positioning , ligament balancing , total knee replacement.
Journal title :
Acta Orthopaedica Et Traumatologica Turcica
Journal title :
Acta Orthopaedica Et Traumatologica Turcica
