I am a 35 year old male. my left leg is losing it's muscle fast. my left leg is a good 5 inches smaller then my right leg. my left leg hurts, burns all the time, weather i am standing, sitting, or lying down. the pain is from the knee down to my foot. the bone in my left leg is also showing deterioration. i can take my fingure and basically poke the bone and it leaves a big dent. should i be worried.