JOURNAL ARTICLE

Radiographic analysis of a hand-held surgical navigation system for tibial resection in total knee arthroplasty

Denis Nam, Seth A Jerabek, Bryan Haughom, Michael B Cross, Keith R Reinhardt, David J Mayman
Journal of Arthroplasty 2011, 26 (8): 1527-33
21397455
Tibial intramedullary or extramedullary alignment guides have not been shown to be highly accurate in performing the tibial resection in total knee arthroplasty (TKA). Since May 2010, a total of 42 knees underwent a TKA using a hand-held, accelerometer-based surgical navigation system for performing the tibial resection (KneeAlign; OrthAlign Inc, Aliso Viejo, Calif). Postoperative standing anteroposterior hip-to-ankle and lateral knee-to-ankle radiographs demonstrated that 97.6% of the tibial components were placed within 90° ± 2° to the mechanical axis in the coronal plane, and 96.2% of the components were placed within 3° ± 2° to the mechanical axis in the sagittal plane. The KneeAlign greatly improves the accuracy of tibial component alignment in TKA.

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