Next to nothing has changed in a very long time with regard to the management of this. Splinting, by whichever method (tape, moldable compounds, toe props etc) have been around for a very long time and guess they will be the mainstay for a very long time. Surgery reseverd for the severe, rigid and older, though minor soft tissue procedures are sometimes used on the less rigid and younger.
One thing to keep in mind is that "critical" age in which heel-toe gait develops (ie 6
+ years) - as soon as that happen the MPJ's start dorsiflexing and the windlass starts working (and it works on ALL digits, not just the hallux - its just works to a lesser extent on digits 2-5). The reverse windlass is a powerfull means of
digital purchase which starts when the windlass get activated in these kids -- the finds of forces involved may go a long way to "self correcting" these problems to a certain extent.
There certainly is limited (or probably no) data on the natural history of these types of digital deformity in kids.
CP (looking out over Times Square

)