What is the normal range for shoulder medial rotation?

What is the normal range for shoulder medial rotation?

• A. 0-90°
• B. 0-45°
• C. 0-180°
• D. 0-60°

Answer: (A)

Internal rotation of the shoulder is the motion of turning the front of the arm toward the body. When you assess this movement, you measure from the resting position at the side up to the point where you can no longer rotate further. In healthy shoulders, this range typically reaches about 70 to 90 degrees, with 90 degrees often cited as the upper limit in many clinical references. So the normal range is up to roughly 90 degrees, which is why 0-90 degrees is the best representation. The other options describe smaller end ranges or a full arc that isn’t how medial rotation is conventionally quantified, so they don’t match the usual normal limit.

Internal rotation of the shoulder is the motion of turning the front of the arm toward the body. When you assess this movement, you measure from the resting position at the side up to the point where you can no longer rotate further. In healthy shoulders, this range typically reaches about 70 to 90 degrees, with 90 degrees often cited as the upper limit in many clinical references. So the normal range is up to roughly 90 degrees, which is why 0-90 degrees is the best representation. The other options describe smaller end ranges or a full arc that isn’t how medial rotation is conventionally quantified, so they don’t match the usual normal limit.