Hi, this is Reginald Reese. What are some calf and leg exercises for a broken knee. When rehabbing the knee it's important to strengthen the muscles around it. This will help minimize the chance of reinjury. First, lets's start by working the stabilizer muscles around the knee and the ankle. By doing this we will be using the Bosu trainer. This is a half dome ball with a flat surface on the bottom. Start by placing my right foot, middle of my foot in the small of the circle on top of the ball. I want to stand, put all of my weight, shift my weight to about for about 15 seconds, ease back down to the ground. I want to alternate legs to give my other leg a rest. I want to do this exercise for each leg a minimum of at least three times. Next, calf raises. I want to start by placing my feet shoulder-width apart, coming up and extending on my toes and ease them back down until I'm flat on the ground. I want to do this exercise again a minimum of three to four times. I hope you enjoy these exercises as much as I did.