Thank you so much this appears to be exactly what I am experiencing
I believe that what you have is called Contracture of Extensor Hallucis Longus Tendon. A tendon going to your big to is contracted or to tight. You need to go to a Podiatrist to confirm this. If I am correct, I think the only way to address the issue is through surgery.
Please go see a doctor to get this checked out.
Is it really a bone deformation or could it be that tendons keep your toe in that position?
I would like to add that there is no recollection of any trauma caused to the toe, this has had this shape for years as i can remember. But the pain is becoming a nuisance i cannot handle anymore