Examine the feet of the horse -  

Pick up each of your horse's hooves and check for stones caught up in the gaps. Look for any cracks or dark spots that could indicate an injury or bruising.

 

Examine the lower legs -  

Check your horse's lower legs for signs of swelling, as well as any obvious cuts or wounds. Gently move the joints of your horse and examine their range of motion to determine if your horse is in pain. 

 

Check for any limping-  

Carefully watch your horse walk in a straight line on a hard flat surface. If it isn't obvious, observing the horse in motion and at rest is the best option to tell if your horse is suffering from a lame.