Humerus Variations

The supracondyloid process is a small bone spur originating on the supracondylar ridge above the medial epicondyle. Its state is a score of “1” or “present” regardless of length or direction of the protrusion.

A septal aperture is a perforating defect found in the area that separates the olecranon fossa from the coronoid fossa on the humerus. When holding the humerus to a light source, any ability to see the light through the bone at this area should be scored as a “1” or “translucent.”

A septal aperture is a perforating defect found in the area that separates the olecranon fossa from the coronoid fossa on the humerus. When there is a perforation that is a “pinhole” in size, the trait’s state is a score of “2” or “small perforation.”

A septal aperture is a perforating defect found in the area that separates the olecranon fossa from the coronoid fossa on the humerus. when there is a perforation that is a larger than a pinhole, regardless of shape, this trait’s state is a score of “3” or “large perforation”