I am 45 years old and work very hard. I am on my knees crawling arround on the ground. I also have to do alot of squatting down and getting back up. I get alot of pain on the inside and outside of my knees expeciallly when I stand up from a kneeling position. I can barelly place weight when I stand up because of the extreme pain in my knees. When ever I have to drive any distance at all and am in a sitted possition and go to get out of my truck, I can barely put the weight on my legs because of the pain to my knees. The pain lasts for about three to five minutes and afterwards feels week. Please help. Thank you.