After total knee replacement, your walking will be much easier. Most patients can benefit from total knee replacement by: 1. Reducing or completely eliminating joint pain, even when caused by surgery, which usually subsides after a few weeks. 2. More strength in your lower extremities. Without knee pain, you will be able to use your lower extremities more and increase the strength of your lower extremities. 3.Improve your quality of life. You will be able to perform daily activities and low confrontation sports more easily and comfortably. 4. Improve your mobility over time. Most artificial total knee joints last more than 15 years.