Comparison of minimally invasive unicompartmental knee arthroplasty with or without a navigation system.
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.
Center for Joint Disease, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam, South Korea.
Jong Keun
JK
Seon
Eun Kyoo
EK
Song
Sang Jin
SJ
Park
Taek Rim
TR
Yoon
Keun Bae
KB
Lee
Sung Taek
ST
Jung
D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D020370:Osteoarthritis, Knee / Q000601:surgery*; D013238:Stereotaxic Techniques; D025321:Surgery, Computer-Assisted