A Technique of Predicting Radiographic Joint Line and Posterior Femoral Condylar Offset of the Knee

<table>Measurement of PCO on the lateral radiograph to the distal femur. PCO was measured (A) relative to the tangent of the posterior cortex of the femur. The PCO ratio was calculated by dividing the width of the femoral diaphysis at the level of the condylar flare (B) by the PCO (A/B).</table>

Arthritis

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Figure 2

Figure 2: A Technique of Predicting Radiographic Joint Line and Posterior Femoral Condylar Offset of the Knee 