My dad is 80 years old, and just had a kidney stone removed via surgery nearly 4 weeks after symptoms first appeared. During that time, he frequently took prescription pain meds. By the time of surgery, he was extremely weak and his potassium levels tested very high. Now, one week after surgery, his blood tests all came back fine, including potassium levels, and kidney function good; but he is so weak that he needs help getting up from sitting position, and his legs (mostly calves) are so sore and hurt so bad, mostly at night, that he can't sleep. He is really in pain. His calves felt rock- hard and tight at first, but feel somewhat loosened up now, but pain is still horrible. Doc said he was dehydrated, but he s been drinking lots of water and leg pain and weakness isn't improving. Doc did full work up on him, including checking for blood clots, didn't find anything, and says he is old and it will take time to recover. He was in very good shape for his age before this. I'm worried. Any thoughts/suggestions appreciated.