The Abductory Twist is a characteristic of the way we walk that is often observed by podiatrists. Lots of people when they are walking, just as the rearfoot comes off the ground there is a sudden and small movement of the rearfoot medially. A lot of physical therapists don't look at this to be of much significance because it is only a symptom of an underpinning issue instead of a disorder on its own.
There are several causes of this abductory twist. The first is that the big toe joint needs to dorsiflex or bend just as the heel lifts up off the ground in order that we can move forward. If that joint doesn't want to flex, then the foot will abduct to go around the block at the joint. Another prevalent cause is overpronation of the foot. This is when the foot is rolling inwards at the ankle joint and the lower leg is externally rotating attempting to roll the foot outwards. When the heel lifts up off the ground the foot suddenly abducts due to the twisting.
A medial heel whip is another entity that does get wrongly identified as an abdutcory twist, but they are different. The twist occurs as soon as the heel comes off the ground and the whip is more of a circumduction of the entire foot as it lifts up of the ground. While the twist and whip are in the identical direction, they are completely different things and caused by distinct issues.
The abductory twist does not have to be treated since it is not an issue by itself. It is caused by something and that something is the reason for the problem, so that needs treating rather than just the abductory twist. The treatment will need to be directed at either the cause of a block in movement at the big toe or the reason behind the overpronation of the foot. Consequently the treatment usually takes on many different possible options, so there isn't any one solution for it.