Lift and place your good leg on the first step
First of all you need to stand in front of the open door of the bus. The crutches should be placed on both sides of you and should be in contact against your rib cage. You need to do is to place the good leg on the first step of the bus you are getting in.
Pull up the rest of your body
After lifting your good leg onto the first step you need to pull up the rest of your body. You need to bring up your injured leg and remaining part of your body by utilizing the muscles in your good leg. Remember to use the top portion of the good leg muscles and push off gradually on the crutches.
Repeat the steps
Next you need to repeat this procedure until your reach in the bus. After you reach in the top of the bus, seek for an empty seat and then take rest. Remember that most buses have a separate portion for disabled people. However, if there is no portion for the disabled people or the whole bus is fully occupied then you can politely ask anyone especially youngsters to give you the place.