In significantly overweight people, friction is caused by the motion of flesh over the bone. Bursitis in the side of the hip can be painful with every step and during sleep. Ashman suggests changing sleeping positions from side to back so undue pressure is not placed on this bursa. The knee isn't affected as severely by bursitis as by arthritis. The soreness responds to immobilization, but there is the danger that mobility will be lost.
Physical therapy is worth a try.
If you are experiencing pain or inflammation around one of your joints, consult your doctor. All rights reserved.