Here is my wrist after a dozen shots with just my shirt sleeve for protection.
The bow pulls 40-45lb and the brace height is 3-1/2"
![](http://i246.photobucket.com/albums/gg112/jackcrafty/04-19-09/124.jpg)
As you can see, there really isn't much "injury". I believe Plains Indians wore a simple bracer, long sleeve shirt, or went without.
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