Was he given anything to do following PT?
There are a few places to go to work.
Ask him to walk with his toes pointing forward.
Bringing awareness is a key starting point.
You need to look at the whole system.
What are his feet like? This may be an impacting factor.
Recommend watching foot ankle webinar this will help with understanding the situation.
A few to start with. Feel free to message with any questions.
Episode 343: Stop Walking Like the Duck You Aren’t
What is hip internal rotation like?
Episode 230: Squatting With Turned Out Feet? Hey Duck Squatter, IR Yourself.
This is a place where turned out feet can originate.