Computed tomography evaluation in total knee arthroplasty: computer-assisted navigation versus conventional instrumentation in patients with advanced valgus arthritic knees.
Arthritic knees with advanced valgus deformity present with soft tissue and osseous anomalies that make total knee arthroplasty (TKA) difficult. We conducted a retrospective chart review of 41 patients (51 knees) to determine whether computer-assisted surgery-TKA (CAS-TKA) is superior to TKA using conventional guiding systems. A significantly higher rate of lateral retinaculum release as well as outlier of sagittal mechanical axes and position of the femoral component (femoral flexion and femoral rotational angle) was recorded in the conventional TKA group versus the CAS-TKA group. Both groups had significant postoperative improvement in clinical performance, but results did not differ significantly between groups. Despite its radiographic benefit, CAS-TKA showed no significant benefit over TKA in short-term clinical functional outcomes when performed by an experienced surgeon.
Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan; Chang Gung University of Science and Technology, Chiayi, Taiwan.
Tsan-Wen
TW
Huang
Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.
Liang-Tseng
LT
Kuo
Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan; Chang Gung University, Taoyuan, Taiwan.
Kuo-Ti
KT
Peng
Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan; Chang Gung University, Taoyuan, Taiwan.
Mel S
MS
Lee
Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan; Chang Gung University, Taoyuan, Taiwan.
Robert Wen-Wei
RW
Hsu
D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging / Q000601:surgery; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation / Q000379:methods; D017760:Bone Malalignment / Q000000981:diagnostic imaging* / Q000601:surgery; 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; D012189:Retrospective Studies; D025321:Surgery, Computer-Assisted; D014057:Tomography, X-Ray Computed
computer-assisted surgery; genu valgus deformity; mechanical axis; total knee arthroplasty