Getting up in the morning, i get aches in both quad leg muscles that last for 15-20 minutes. Off and on, during the day, may re-occur but not for very long. Otherwise, i can hike or go bike riding, no problems. This condition strated rather abruptly 4 weeks ago, a week after i returned from a hiking trip in europe. My doctor ordered bloodwork, and x-rays. I did get a report from the nurse that i might be "broderline" rhumetoid arthritic.