Lizbet - my PT gave me a new way to increase ROM, pretty slick, too. If you have access to a leg press machine . . . move the back support/slide a notch closer than you would normally use, put the weight low (10#), put both feet on the pad and extend, bringing the pad back all the way. If it is easy (on flex), then move your feet lower on the pad @ 3" (or 1/2 the non-slip tread strip) and repeat. I do 10 - 12 reps at a challenging flex (meaning my feet are moving lower on the pad), until it is easy at that spot . . . then lower my feet another couple of inches.