The normal anatomical pronosupination ranges are?

The normal anatomical ranges for pronation and supination of the forearm are indeed around 90 degrees for supination and 80 degrees for pronation. Understanding these ranges is crucial for assessing upper limb function, particularly in rehabilitation and prosthetic practice.

Supination involves the rotation of the forearm such that the palm faces upward or forward, and the average range is commonly accepted as about 90 degrees. In contrast, pronation involves rotating the forearm so that the palm faces downward or backward, with a typical range of about 80 degrees. Knowledge of these movements and their normal ranges helps clinicians design appropriate treatment plans, including exercises to restore or enhance wrist and forearm function after an injury or surgery.

The other ranges suggested do not accurately reflect the accepted anatomical values found in literature regarding pronosupination. Hence, the provided values in the correct choice closely align with standard anatomical references.