The Correlation Between Femoral Component Implanting Flexion Angle and Posterior Condyle Offset in Cruciate Retaining Total Knee Arthroplasty

The Correlation Between Femoral Component Implanting Flexion Angle and Posterior Condyle Offset in Cruciate Retaining Total Knee Arthroplasty

The main aim and scope is making measurement and comparison about the femoral component posterior offset under different femoral component implanting flexion angle in cruciate retaining total knee arthroplasty. The results may identify the influence of the flexion component implanting flexion angle on the femoral component posterior offset.

Inclusion Criteria:

• The patients undertaken the primary cruciate retaining total knee arthroplasty;
• using the curiate retaining total knee arthroplasty prothesis from Biomet and Smith&Nephew;
• Complete surgery documents and radiologic data,such as standard X-ray postoperative both at antirior-posterior position and medial-lateral position(overlap of the medial and lateral femoral condyle).

Exclusion Criteria:

• The patients without standard X-ray postoperative both at antirior-posterior position and medial-lateral position(poor overlap of the medial and lateral femoral condyle);
• Complex primary total knee arthroplasty, using extra component such as trabecular metal,stem or et al.