B.O called me an said my horses hind leg is stiff like locked she won't pick it up or anything an that she just drags it. It was fine this morning but helper noticed wen feeding in afternoon that her leg was like that. No major health history just malnourished. I turned her out in a round penn yesterday to play a little an she was good when I put her away. If anyone knows what might have happened please let me know an any possible ways to help. Thank you!