How to Use a Forward-Wheel Walker After Total Knee Replacement Surgery . This video shows one of my patients using a walker for the very first time after surgery. Learning the right technique early makes a huge difference in how quickly and confidently you return to normal walking. . Here’s the #1 rule I teach every patient: Let the surgical leg support your body weight — and avoid pushing down on the walker more than you need to. . A walker should help with balance and safety, not replace the w