Another option. I think this differentiates between the percentage of people who could walk at all, presumably with assistance, and those who could walk without any assistance, walkers, crutches, etc.

www.ft.com › content
Spinal implants enable paraplegic patients to walk again ...
All participants gradually acquired some ability to walk even when the implants were switched off.

www.theaustralian.com.au › world › the-times › news-story
Paralysed patients walk again after breakthrough treatment
.. left leg was paralysed in 2010, has also regained some ability to walk.


--------------------------------------------------
Note added at 6 hrs (2020-01-27 20:09:55 GMT)
--------------------------------------------------

Daniela, as Neil says, gait generally refers to the manner in which a person walks, not the action of walking itself:

Gait: A manner of walking. Observation of gait can provide early diagnostic clues for a number of disorders, including cerebral palsy, Parkinson's disease, and Rett syndrome.
https://www.medicinenet.com/script/main/art.asp?articlekey=3...

"Gait" means the way a person walks. Abnormal gait or gait abnormality occurs when the body systems that control the way a person walks do not function in the usual way.
https://www.medicalnewstoday.com/articles/320481.php#abnorma...

This is more about being able to walk, with or without aid, not the person's gait.