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2. Effect of range of motion on the success of a total knee arthroplasty;Ritter;J Arthroplasty,1987
3. Preoperative flexion: does it influence postoperative flexion after posterior-cruciate-retaining total knee arthroplasty?;Parsley;Clin Orthop,1992
4. The Knee Society total knee arthroplasty roentgengraphic evaluation and scoring system;Ewald;Clin Orthop,1989
5. Rationale of the Knee Society clinical rating system;Insall;Clin Orthop,1989