Research regarding the pathomechanics of running has been in debate over the influence variables such as alignment, range of movement and biomechanics have in the prevalence of lower extremity injury. It has been theorized excess eversion produces a non-rigid platorm from which to push-off resulting in excess tissue strain.
The present study retrospectively examined 42 symptomatic runners examining the above variables using 3-D gait analysis to determine the biomechanical differences that exist among healthy and injured athletes.
The authors discovered there was no differences found between groups concerning eversion velocity and excursion however, prolonged duration of eversion was found among injured runners of both groups. Further variables found among groups included reduced static dorsiflexion range, higher standing tibia varus angle, and a more everted rear foot at heel-off.