It all comes down to the rick assessments that would be carried out for each of your job duties. These must now take account of your condition and it should be addressed there in writing. The Safety Statement will contain these (it should be a huge document, don't be misled by the word 'statement') and it is available to you to examine.
If it has been determined by a competent professional that your being on a stick infringes your ability to do your job safely, or by the use of such it affects your ability to react, or places other workers or patients at risk, then you should be asked to stop or move.