The Medial Heel Whip

The medial heel whip is a finding during a gait analysis in which the heel has a slight medial movement to it as it comes off the ground. As to what casues it, its not totally clear. Most physiotherapists I talk to about this say it come from the hip muscles. Most Podiatrists I talk to tell me its due to overpronation and they tend to call it an abductory twist. There is no evidence either way on this and I guess it depends on which profession you are from as to which one you are more likely to believe in. Either way, it probably pays to check both the hip and the foot and do it properly. Abductory twist or medial heel whip? Foot or hip?