A Charley horse is a painful and uncontrollable muscle spasm in the legs or feet. Charley horses often last for a few seconds or minutes, but can last much longer and interfere with sleep or daily activities.
If you're having difficulty walking, it could be caused by a range of conditions, from those that affect your muscles and bones to ones that affect your nerves.
When bacteria enters your body through a wound or during surgery, you may develop a bone infection. Certain conditions, such as diabetes, raise your risk of bone infections. Getting early treatment is crucial, since some bone infections can become life threatening.