After my knee surgery, the persistent pain that I have has been diagnosed as Chronic Regional Pain Syndrome. Is it normal to feel like my leg is larger than it really is? I also have to really concentrate to move it sometimes? Is this normal?

You are describing perceptual disturbances that are very common among people who have CRPS. Other perceptual changes may include anger or hostility towards the limb, a distorted mental picture of the limb, difficulty in knowing its position in space, and that the limb feels different than it actually looks. Studies show that there is a direct relationship between the severity of pain and the severity of the perceptual disturbances in CRPS.

Reference:

J. Lewis, et.al. PAIN December 2007. Vol. 133. Issue 1-3. Pp.111-119.

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After my knee surgery, the persistent pain that I have has been diagnosed as Chronic Regional Pain Syndrome. Is it normal to feel like my leg is larger than it really is? I also have to really concentrate to move it sometimes? Is this normal?