Myotonic Dystrophy a slowly progressing disease, until it is not slowly progressing. many patients reach a point where they can not go up and down steps anymore. This is a big barrier for many people. There are devices though that will help you up and down stairs. One of these is the Liftcar.
The Liftcar takes some getting used to and requires some skill for the operator to use. You need to tilt and remember to hold the button down. It works well and up and down stairs you can go. Myotonic Dystrophy Patients legs get weak with time. Mobility becomes and issue. But this device can help a lot! The downside is that it is really expensive and insurance does not pay for these type of devices for Myotonic Dystrophy Patients in the USA
Here is a video you can review