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  • Title: Comparison of minimally invasive unicompartmental knee arthroplasty with or without a navigation system.
    Author: Seon JK, Song EK, Park SJ, Yoon TR, Lee KB, Jung ST.
    Journal: J Arthroplasty; 2009 Apr; 24(3):351-7. PubMed ID: 18534460.
    Abstract:
    The authors investigated the hypothesis that navigation system-assisted minimally invasive unicompartmental knee arthroplasty (NA-MIS UKA) produces better short-term clinical results than MIS UKA without a navigation system. After a minimum 2-year follow-up, short-term functional results and component alignment accuracies of 31 knees that underwent NA-MIS UKA (the NA-MIS group) were compared with those of 33 knees that underwent MIS UKAs without a navigation system (the MIS group). The Hospital for Special Surgery and Western Ontario and McMaster Universities Osteoarthritis Index scores of 2 groups showed significant improvement at final follow-ups, but no significant intergroup differences were observed (P = .071 and P = .096, respectively). However, NA-MIS UKA produced more improvement in the desired mechanical axis and a lower percentage of prosthetic alignment outliers than MIS UKA.
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