Hip osteoarthritis (OA) can be very painful and make the hips stiff. Often simple exercises will help gain movement in the hips and reduce pain. These 5 hip exercises, which can be done lying down, may help.
Starting off with smaller movements should cause less pain in the hips. Pelvic tilts are a great way to get the muscles moving.
Then isometric exercises (where the muscles are activated but not making movements) do a great job of strengthening without the pain of movement. Glute squeezes (or sets) and hamstring sets do a great job of getting some strength in the hips.
Next are bridges. These are great for all the muscles around the hips and low back. Finally, supine hip abduction is a great beginner exercise since the bed or floor is used to help support the legs.