previous section: 6/14 page: 4/5 next

6Determine nail length and diameter

Femoral shaft – Antegrade nailing - Nail length and diameter using radiographic ruler

Nail diameter

It is important to measure the medullary diameter at the mid portion of the femur, which represents the narrowest segment of the medullary canal.

The inner cortical edge should touch with the inner numbered disk of the ruler aperture. In the illustration an inner cortical diameter of 14 mm is shown.