Accuracy of a hand-held surgical navigation system for tibial resection in total knee arthroplasty |
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| Affiliation: | 1. Division of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA;2. Kaiser Permanente, San Diego, CA, USA;3. Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, CA, USA;1. Musculoskeletal Institute, CHU Rangueil, Toulouse, France;2. Anatomy Laboratory, Faculty of Medicine, Toulouse, France;1. Academic Hospital Feldkirch, Department for Trauma Surgery and Sports Traumatology, Carinagasse 47, 6800 Feldkirch, Austria;2. Academic Hospital Feldkirch, Department for Radiology, Carinagasse 47, 6800 Feldkirch, Austria;1. Sports Medicine and Shoulder Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY, United States;2. Department of Biomechanics and Implant Design, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY, United States;1. Department of Orthopedics, Faculty of Medicine, Universidad de los Andes, Santiago, Chile;2. School of Kinesiology, Faculty of Medicine, Universidad de los Andes, Santiago, Chile;3. Knee Surgery Unit, Clínica Dávila, Santiago, Chile;4. Knee Surgery Unit, Military Hospital, Santiago, Chile;5. Knee Surgery Unit, Clínica Meds, Santiago, Chile |
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| Abstract: | BackgroundAccuracy of total knee arthroplasty (TKA) implant placement and overall limb are important goals of TKA technique.MethodsThe accuracy and ease of use of an accelerometer-based hand-held navigation system for tibial resection during TKA was examined in 90 patients. Preoperative goals for sagittal alignment, navigation system assembly time, resection time, and tourniquet time were evaluated. Coronal and sagittal alignment was measured postoperatively.ResultsThe average coronal tibial component alignment was 0.43° valgus; 6.7% of patients had tibial coronal alignment outside of ± 3° varus/valgus. The difference between the intraoperative goal and radiographically measured posterior tibial slope was 0.5°. The average time to completion of the tibial cut was 4.6 minutes.ConclusionThe accelerometer-based hand-held navigation system was accurate for tibial coronal and sagittal alignment during TKA, with no additional surgical time compared with conventional instrumentation. |
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