[TheMercenary]

Anatomically speaking even the medical dictionaries vary:

leg (leg)
1. the part of the lower limb between the knee and ankle.
2. in common usage, the entire lower limb, with the part below the knee being called the lower leg .
3. any of the four limbs of a quadruped.

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Dorland's Medical Dictionary for Health Consumers. © 2007 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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leg (lg)
n.
1. One of the two lower limbs of the human body, especially the part between the knee and the foot.
2. A supporting part resembling a leg in shape or function.

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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leg
[leg]
Etymology: ONor, leggr
1 that section of the lower limb between the knee and ankle.
2 in common usage, the entire lower limb (in which case, the part below the knee is called the lower leg).
Mosby's Medical Dictionary, 8th edition. © 2009, Elsevier.

http://medical-dictionary.thefreedic...m/Leg+(anatomy)