title: Evaluation of total knee arthroplasty performed with and without computer navigation: a bilateral total knee arthroplasty study.
abstract: Sequential bilateral total knee arthroplasty performed on 54 patients utilizing navigation (CAS-TKA) in one knee and traditional instrumentation (T-TKA) in the contralateral knee was reviewed at a mean follow-up duration of 2.5years. There were no differences with regard to KSS, ROM, postoperative anatomic alignment, mechanical axis, or tibial angle. There was a statistically significant decrease in outliers for the CAS-TKA group with respect to anatomic alignment (3.7% vs. 17.0%, P=0.024), mechanical axis (6.1 vs. 20.4%, P=0.037) and tibial component alignment (0% vs. 7.5%, P=0.042). There is no apparent benefit of CAS-TKA with regards to KSS, ROM, or alignment in the hands of fellowship-trained total joint specialists. The clinical relevance of reduced outliers in the CAS-TKA group is unknown with the current follow-up interval.
authors.affiliation: Denver-Vail Orthopedics, Parker, Colorado.
authors.forename: Derek R
authors.initials: DR
authors.lastname: Johnson
authors.forename: Douglas A
authors.initials: DA
authors.lastname: Dennis
authors.forename: Kirk A
authors.initials: KA
authors.lastname: Kindsfater
authors.forename: Raymond H
authors.initials: RH
authors.lastname: Kim
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D011446:Prospective Studies; D011859:Radiography; D013238:Stereotaxic Techniques; D025321:Surgery, Computer-Assisted; D016896:Treatment Outcome