Abstract
Radiographic measurements of the foot are used by surgeons for objectively assessing procedure outcome.1 These are static measurements, commonly taken in angle and base of gait position, without regard to standardizing weight distribution.2 However, during everyday activities the foot undergoes extreme changes in response to load and to our knowledge, there is limited literature on foot deformation and radiographic changes that occur under different loading conditions. The current study is designed to evaluate changes of selected x-ray measurements on lateral radiographs taken under three different loading conditions, 10%, 50%, and 90% of body weight (BW), in an attempt to understand the load deformation relationship in various foot structures. We hypothesize that the medial (MLA) and lateral longitudinal arch (LLA) angles will increase with load and that the inclination angles of the calcaneus (CI), 1st metatarsal (MI1), and 5th metatarsal (MI5) will decrease with load.
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