title: Randomized control trial comparing radiographic total knee arthroplasty implant placement using computer navigation versus conventional technique.
abstract: The aim of this study is to assess the radiological outcome of conventional techniques versus computer-navigated surgery for total knee arthroplasty. Ninety patients with knee arthritis were prospectively randomized into 3 groups: conventional technique: extramedullary (EM) and intramedullary (IM) tibia guide versus computer navigation surgery (CAS). Two surgeons performed all procedures. Standardized long leg coronal and sagittal x-rays were evaluated by a blinded assessor. Our results showed that CAS had greater consistency and accuracy in implant placement. In the coronal view, 93.3% in the CAS group had better outcomes compared with EM (73.4%) and IM (60.0%). In the sagittal axis, 90.0% CAS also had better outcomes compared with EM (63.3%) and IM (76.7%). Computer-navigated total knee arthroplasty helps increase accuracy and reduce "outliers" for implant placement.
authors.affiliation: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors.forename: Pak Lin
authors.initials: PL
authors.lastname: Chin
authors.forename: Kuang Ying
authors.initials: KY
authors.lastname: Yang
authors.forename: Seng Jin
authors.initials: SJ
authors.lastname: Yeo
authors.forename: Ngai Nung
authors.initials: NN
authors.lastname: Lo
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging*; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography; D025321:Surgery, Computer-Assisted; D013977:Tibia / Q000000981:diagnostic imaging