After surgery I wasn't fully prepared for the mental struggle that comes with recovery. The GoKnee gave me hope after being able to see improvement after my first use, and continued improvement during the time I used it. It was so easy to use and I felt like I completed a full therapy session in less than 8 minutes. The GoKnee does the work for you if you just follow the instructions. I feel like I am ahead of the game in my recovery using this device.