You get adequate help to lift J.F to the head of bed
Tell one person to slightly pull up on the 20-pound traction weight and have another person slightly lift up the 5-pond suspension weight in order for the group to be able to move J.F toward the head of bed
Have both lifters to gently and gradually release their weight simulataneously and observe the left upper leg return to a 45-degree angle.
Make sure to check the traction mechanics after each position change.