So, against the PT guy's advice, I rode a bike yesterday.
Not far, just down the driveway, then two houses down the street and back to the house. First, no ankle pain but my knee was bitching while climbing the slight incline in low gear. Second, the seat needs to come down at least a half inch. This may ease the knee issue. Lastly, that stem and handlebar have to go. The stem is just wrong for a flat bar and the bar is too narrow. Other than that, the 'Old Fart Lefsa Special' rides pretty nice for a 'Free' bike.