title: Imageless computer navigation in total knee arthroplasty provides superior short term functional outcomes: a meta-analysis.
abstract: Computer navigation in total knee arthroplasty (TKA) is intended to produce more reliable results, but its impact on functional outcomes has not been firmly demonstrated. Literature searches were performed for Level I randomized trials that compared TKA using imageless computer navigation to those performed with conventional instruments. Radiographic and functional outcomes were extracted and statistically analyzed. TKA performed with computer navigation was more likely to be within 3° of ideal mechanical alignment (87.1% vs. 73.7%, P < .01). Navigated TKAs had a higher increase in Knee Society Score at 3-month follow-up (68.5 vs. 58.1, P = .03) and at 12-32 month follow-up (53.1 vs. 45.8, P < .01). Computer navigation in TKA provides more accurate alignment and superior functional outcomes at short-term follow-up.
authors.affiliation: Department of Orthopaedic Surgery, Center for Hip and Knee Replacement (CHKR), New York-Presbyterian Hospital at Columbia University Medical Center, New York, New York.
authors.forename: Brett A
authors.initials: BA
authors.lastname: Rebal
authors.affiliation: Department of Orthopaedic Surgery, Center for Hip and Knee Replacement (CHKR), New York-Presbyterian Hospital at Columbia University Medical Center, New York, New York.
authors.forename: Oladapo M
authors.initials: OM
authors.lastname: Babatunde
authors.affiliation: Department of Orthopaedic Surgery, Center for Hip and Knee Replacement (CHKR), New York-Presbyterian Hospital at Columbia University Medical Center, New York, New York.
authors.forename: Jonathan H
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Orthopaedic Surgery, Center for Hip and Knee Replacement (CHKR), New York-Presbyterian Hospital at Columbia University Medical Center, New York, New York.
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Geller
authors.affiliation: Department of Orthopaedic Surgery, Center for Hip and Knee Replacement (CHKR), New York-Presbyterian Hospital at Columbia University Medical Center, New York, New York.
authors.forename: David A
authors.initials: DA
authors.lastname: Patrick
authors.affiliation: Department of Orthopaedic Surgery, Center for Hip and Knee Replacement (CHKR), New York-Presbyterian Hospital at Columbia University Medical Center, New York, New York.
authors.forename: William
authors.initials: W
authors.lastname: Macaulay
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D020127:Recovery of Function; D025321:Surgery, Computer-Assisted; D016896:Treatment Outcome
keywords: arthroplasty; computer navigation; knee; meta-analysis; total knee replacement