Biomechanical and clinical factors related to stage I posterior tibial tendon dysfunction.

Study Design: Case control.

Objectives: To investigate differences in arch height, ankle muscle strength, and biomechanical factors in individuals with stage I posterior tibial tendon dysfunction (PTTD) in comparison to healthy individuals.

Background: PTTD is a progressive condition, so early recognition and treatment are essential to help delay or reverse the progression.

The role of tibialis posterior fatigue on foot kinematics during walking.

Background: The purpose of this study was to investigate the effect of localised tibialis posterior muscle fatigue on foot kinematics during walking. It was hypothesised that following fatigue, subjects would demonstrate greater forefoot and rearfoot motion during walking. It was also postulated that the magnitude of the change in rearfoot motion would be associated with standing anatomical rearfoot posture.