OBJECTIVES To analyze the mechanism of injury for foot and ankle fractures resulting from automobile accidents to create a basis for developing an improved design for protection. DESIGN Retrospective. SETTING Level I trauma center with accident research unit. PATIENTS Automobile accident reports and medical records of individuals injured in the accidents. MAIN OUTCOME MEASUREMENTS Techn...

Seven subjects with normal joints were tested for active and passive position sense of ankle inversion, peroneal reflex reaction time to sudden ankle inversion, and postural stability during single-leg stance. The tests were performed before and after regional block of the ankle and foot with local anaesthetic. Passive position sense, assessed with the muscles relaxed, was greatly impaired by a...

BACKGROUND The purpose of this study was to report on ankle and foot functions via the holistic evaluations using clinical examination, functional scores assessment and isokinetic tests after harvesting autogenous peroneus longus tendons for anterior cruciate ligament (ACL) reconstruction focusing on the donor site morbidity with a minimum 1-year follow-up period. MATERIAL AND METHOD The stud...

results – “female gender (r = -.469, P < .001) and impaired balance (r = .495, P < .001).” Foot and ankle variables – “No significant gender differences (P <.05) were observed for age,” Variables associated with ankle instability – “Factors significantly associated with right FAI included female gender (r = -.469, P < .001),” “Factors associated with left FAI included female gender (r = .396, P...

Previous studies of human locomotion indicate that foot and ankle structures can interact in complex ways. The structure of the foot defines the input and output lever arms that influences the force-generating capacity of the ankle plantar flexors during push-off. At the same time, deformation of the foot may dissipate some of the mechanical energy generated by the plantar flexors during push-o...

The complex mechanics of the ankle joint complex depends highly on the integrity of the ankle ligaments. An incomplete restoration of the antero-fibular ligament after trauma may result in a mechanical dissociation of the talus from the ankle mortise. The force that is needed to induce a non-physiological movement of the foot is determined by the individual configuration of the bony and articul...

Today, commercially available ankle-foot prostheses are completely passive, and consequently, their mechanical properties remain fixed with walking speed and terrain. Conversely, normal human ankle stiffness varies within each gait cycle and also with walking speed [1][2][3]. Furthermore, some studies have indicated that one of the main functions of the human ankle is to provide adequate energy...

The purpose of this study was to determine the effects of symmetric and asymmetric foot placements on joint moments during sit-to-stand movements. Three symmetric (foot-neutral, foot-back, and foot-intermediate) and three asymmetric foot placements (preferred stagger, nonpreferred stagger, and intermediate stagger) were tested. Standard (46 cm) and low (41 cm) seat heights were chosen to repres...