Have 6 screws+1plate in r foot 6m post lisfranc fusion. had both mrsa+osteomylitis in r foot. no injury but had sudden severe pain in r foot today?

Worrisome: Lots of possible reasons: post-traumatic arthritis, hardware pain/ ?Failure, incomplete fusion, re-current infection, just because? Put your brace on, get some crutches, go see your doctor.

See doc: Sudden pain after a step may indicate breakage of the metal or a stress reaction in one of your bones. If it cam on over a short time unassociated with walking it could be a recurrence of infection. Sometimes means nothing just breaking up of scar tissue. See your doc sooner than latter if cannot put weight on foot or persists.

Have it evaluate.: You may need follow up x-rays to see if you have any bony or hardware issues.