What does "Sigmoid notch" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
The "sigmoid notch" is a term used to describe a specific part of one of the bones in the forearm, the radius. It's a kind of groove or dip on the edge of the bone where it meets the other bone in the forearm, the ulna. This meeting point forms a joint that allows the wrist to rotate.
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