What is the typical range for forearm pronation?

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Multiple Choice

What is the typical range for forearm pronation?

Explanation:
Forearm pronation is the rotation around the forearm’s axis that turns the palm from a forward-facing position toward the underside. In a normal adult, this rotation from neutral spans about 75–90 degrees, commonly cited as 80–90 degrees. That makes 80–90 degrees the best answer. The range of 0–20 degrees is far too little rotation to be considered functional pronation, 60–70 degrees is below the typical upper limit, and 120–150 degrees would exceed normal, physiologic motion.

Forearm pronation is the rotation around the forearm’s axis that turns the palm from a forward-facing position toward the underside. In a normal adult, this rotation from neutral spans about 75–90 degrees, commonly cited as 80–90 degrees. That makes 80–90 degrees the best answer. The range of 0–20 degrees is far too little rotation to be considered functional pronation, 60–70 degrees is below the typical upper limit, and 120–150 degrees would exceed normal, physiologic motion.

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