Coronal alignment after total knee arthroplasty

[摘要] A long-held principle in total knee arthroplasty (TKA) is that long-term survival and optimal function are dependent on achieving a post-operative leg alignment within 3° of the neutral mechanical axis. To this end, computer navigation and now patient-specific instrumentation have been developed, to improve accuracy in implantation and maximise the number of arthroplasties falling within these limits. At the neuvièmes Journées Lyonnaises de Chirugie du Genou in 1999, Rivat and Neyret presented a view that residual varus of femoral origin was acceptable, but neutral mechanical alignment of the tibial component was mandatory.1 More recently, a number of authors have challenged this principle, suggesting “malalignment” of the mechanical axis may have little effect on the outcome of knee arthroplasty performed with modern prostheses.

[学科分类] 神经科学

[关键词] knee;total arthroplasty;coronal alignment;mechanical alignment;kinematic alignment;functional results;survivorship