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ORIGINAL ARTICLE
Year : 2017  |  Volume : 17  |  Issue : 3  |  Page : 135-138

Midterm functional outcomes of imageless navigation-assisted total knee arthroplasty


1 Department of Orthopedic Surgery, McGill University, Montreal, Canada
2 Department of Orthopedic Surgery, King Saud University, Riyadh, Saudi Arabia
3 Department of Rehabilitation Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia

Correspondence Address:
Abdulrahman D Algarni
Department of Orthopedic Surgery, King Saud University, P.O. Box: 7805 (49), Riyadh 11472
Saudi Arabia
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DOI: 10.4103/sjsm.sjsm_15_17

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Purpose: The study aims to evaluate the functional outcomes of imageless navigation-assisted total knee arthroplasty (TKA) after a minimum follow-up of 7 years. Materials and Methods: Between December 2004 and December 2009, a total of 123 navigation-assisted TKAs in 94 patients were performed by the same surgeon at a single institution. Hospital for Special Surgery (HSS) knee score was recorded pre- and post-operatively, and radiographic assessment for osteolysis, wear, or loosening was performed in all patients. Results: No conversion from navigation-assisted to conventional technique was required in any patient. The mean pre- and post-operative HSS score was 60.3 and 86.8, respectively. None of the patients was lost to follow-up. The survivorship of all knees at an average of 9.5 years after surgery was 99.3%. One patient required revision due to deep infection. There were no pin tracker-related complications. Conclusions: Navigation-assisted TKA produces good clinical outcomes comparable to conventional TKA. Further studies are required to assess long-term functional outcomes.


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