causes of medial heel whip
Often, a medial heel whip, during swing phase, running style is seen in runners who have prolonged foot pronation. 1 Greater vertical impact forces and delayed pronation have been implicated as risk factors for running-related injuries. 1 Causes of medial whip can be due to weak hip external rotator muscles, such as the piriformis, gemellus superior and obturator internus and tight hip internal rotator muscles such as the gluteus medius and tensor fasciae latae.