It give a good general overview of how key hole surgery is performed in easy to understand terms.
One point to note is that the animiation states that 3 incisions will be made. It is also common for the entire procedure to be completed using only two.
The benefits of key hole surgery are easily seen by the size of the incisions. In years gone by this type of surgery would have required a large incision, often greater than 6 inches long. This of course led to much more pain and patients having longer hospital stays.
Today, the vast majority of knee arthroscopies are day case operations.