ALLENTOWN, Pa. -

A patient with a spinal-cord injury is marking a milestone step.

Dave Fessler was injured in 2012 in a body-surfing accident.

Thursday he walked at Good Shepherd Rehabilitation in Allentown with the help of the "Ekso bionic exoskeleton."

The robotic device helps people with leg paralysis and weakness stand and walk.

It wasn't just a milestone for Fessler; it was also the millionth step a patient has taken using the technology.

Here's how it keeps track:

"Per session, each session it counts how many steps they did per session. So we can look at each device and see how many steps were taken," said Sue Golden, the director of Neurorehab therapy at the Good Shepherd Rehab Network.

Fessler says the technology has made him feel stronger and more coordinated.