1. Posterior cruciate ligament retaining, posterior stabilized, and varus/valgus posterior stabilized constrained articulations in total knee arthroplasty;Lombardi;Instr Course Lect,2006
2. Walldius arthroplasty: a review of 80 cases;Freeman;Clin Orthop,1973
3. Hinged total knee arhtroplasty;Hui;J Bone Joint Surg Am,1980
4. GUEPAR knee arthroplasty results and late complications;Jones;Clin Orthop,1979
5. Problems with the Rotaflex: a 10-year review of a rotating hinge prosthesis;David;J Arthroplasty,1998