title: Preoperative templating and computer-assisted total knee arthroplasty for arthritic valgus knee.
abstract: We reported the functional outcomes, component alignment and optimal thickness of the tibial inserts and joint line changes of 21 arthritic valgus knee deformities using preoperative templating and computer-assisted total knee arthroplasty(TKA). The osseous cut was modified using a novel preoperative templating technique. Soft tissue balance and component implantation were implemented with the aid of a computed tomography-free navigation system. The arthritic valgus knees had clinical, and functional improvement of the knee Society scores and Lysholm scores postoperatively, at an average of 37.8 ± 7.2 months. The mean anatomic axis (15.2° ± 4.5° vs. 6.1° ± 1.4°) and mechanical axis (8.3° ± 5.2° vs. 0.28° ± 1.6°) were also significantly improved postoperatively. The mean thickness of tibial inserts and joint line changes was 10.7 ± 1.46 mm and 0.1 ± 1.4 mm. This computer-assisted technique with preoperative radiographic templating is an alternative strategy to improve TKA results in arthritic valgus knees.
authors.affiliation: Department of Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital, Graduate Institute of Clinical Medical Science, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
authors.forename: Wen-Yi
authors.initials: WY
authors.lastname: Chou
authors.forename: Ka-Kit
authors.initials: KK
authors.lastname: Siu
authors.forename: Jih-Yang
authors.initials: JY
authors.lastname: Ko
authors.forename: Jung-Ming
authors.initials: JM
authors.lastname: Chen
authors.forename: Ching-Jen
authors.initials: CJ
authors.lastname: Wang
authors.forename: Feng-Sheng
authors.initials: FS
authors.lastname: Wang
authors.forename: To
authors.initials: T
authors.lastname: Wong
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001168:Arthritis / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D006801:Humans; D007432:Intraoperative Period; D016916:Joint Deformities, Acquired / Q000000981:diagnostic imaging / Q000601:surgery*; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D011859:Radiography; D025321:Surgery, Computer-Assisted; D016896:Treatment Outcome
keywords: Navigation; Total knee arthroplasty; Valgus knee