Question

How do you tell a right humerus from a left humerus?

Answer 1

Right humerus or left humerus?

Orient the bones so that the rounded head is up.

Look for the deep olecranon fossa on the lower (distal) end.

Rotate the humerus so that the capitulum and trochlea face YOU.

If the capitulum is on the left side of the bone, it is a left humerus. If the capitulum is on the right side, it is a right humerus.

Answer 2

With the aid of the capitulum, we may distinguish a right humerus from a left humerus; if it faces the right, the humerus is on the right.

What causes this

• The capitulum helps us ensure that the left and right humeri are bony.
• The front and inner surfaces of the humerus' sidelong condyle are covered by the capitulum, an adjustable and elevated projection of the bone.
• The bone side is determined by the side that the capitulum faces.
• In the unlikely event if the capitulum is available on the right half of the bone or faces the right side, the bone is the right humerus.
• It is the left humerus bone, in the unlikely event that the capitulum is visible on the left half of the bone.
• With the help of boning, the capitulum area helps to separate the right and left humerus.

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