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1Preliminary remarks

The CCD angle of the uninjured leg is determined with the radiograph as a guide.

Preoperative planning

Depending on the implant used, the most appropriate CCD angle has to be determined preoperatively.
Take an AP x-ray of the uninjured leg. Using the preoperative planning template, measure the CCD angle of the uninjured leg (center-collum diaphysis angle, ie, angle subtended between the femoral neck and shaft axes). In most cases an implant with a CCD angle of 130° angle will be appropriate.