Fig. 1
From: Relationship between measurements of ipsilateral capitellum and prosthetic radial head size
Measurement of the lateral capitellar diameter: A Measuring the diameter of the circle identified by the vertex of the superior capitellar edge, the center point of the capitellum and the intersection of the line defined by the above two points with the inferior edge of the capitellum; B verifying whether the measured circle was the approximate circle of the capitellar maximum cross section in the lateral view