title: Comparison of functional results with navigation-assisted minimally invasive and conventional techniques in bilateral total knee arthroplasty.
abstract: This study was undertaken to compare the clinical and radiological results achieved using navigation-assisted minimally invasive surgery (NA-MIS) and conventional (CON) techniques in 42 bilateral total knee arthroplasty (TKA) patients with a minimum follow-up of one year. Clinical evaluations were performed using range of motion (ROM), Hospital for Special Surgery (HSS) scores, and Western Ontario and McMaster University (WOMAC) scores (pain, functional, and total) at 3, 6 and 9 months and one year postoperatively. Patients' subjective preferences and radiological indices, including mechanical axis and coronal inclinations of the prostheses, were compared at one year postoperatively. NA-MIS TKA yielded better HSS and WOMAC total scores than CON TKA up to six months, and a better WOMAC pain score up to 9 months. However, these differences were not significant at one year postoperatively. ROM was comparable in both groups at all times, but more patients preferred the NA-MIS side to the CON side. Radiological results showed no differences in mean values between the two surgical groups, although the NA-MIS group contained fewer outliers than the CON group. In conclusion, NA-MIS TKA was associated with better clinical results up to 6 or 9 months after surgery, giving more accurate leg alignment than CON TKA.
authors.affiliation: Center for Joint Disease, Chonnam National University Hwasun Hospital, Jeonnam, Korea.
authors.forename: J K
authors.initials: JK
authors.lastname: Seon
authors.forename: E K
authors.initials: EK
authors.lastname: Song
authors.forename: T R
authors.initials: TR
authors.lastname: Yoon
authors.forename: S J
authors.initials: SJ
authors.lastname: Park
authors.forename: B H
authors.initials: BH
authors.lastname: Bae
authors.forename: S G
authors.initials: SG
authors.lastname: Cho
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D001696:Biomechanical Phenomena; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D010147:Pain Measurement; D017060:Patient Satisfaction; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology*; D025321:Surgery, Computer-Assisted