%0 Journal Article
%T Classification of the height and flexibility of the medial longitudinal arch of the foot
%A Mette Nilsson
%A Rikke Friis
%A Maria Michaelsen
%A Patrick Jakobsen
%A Rasmus Nielsen
%J Journal of Foot and Ankle Research
%D 2012
%I BioMed Central
%R 10.1186/1757-1146-5-3
%X The participants consisted of 254 volunteers from Central and Northern Denmark (198 m/56 f; age 39.0 ¡À 11.7 years; BMI 27.3 ¡À 4.7 kg/m2). Navicular height (NH), longitudinal arch angle (LAA) and Feiss line (FL) were measured for either the left or the right foot in a subtalar neutral position and subtalar resting position. Maximum values and ROM were calculated for each test. The 95% and 68% prediction intervals were used as cut-off limits. Multiple regression analysis was used to detect influencing factors on foot posture.The 68% cut-off values for maximum MLA values and MLA ROM for NH were 3.6 to 5.5 cm and 0.6 to 1.8 cm, respectively, without taking into account the influence of other variables. Normal maximum LAA values were between 131 and 152¡ã and normal LAA ROM was between -1 and 13¡ã. Normal maximum FL values were between -2.6 and -1.2 cm and normal FL ROM was between -0.1 and 0.9 cm. Results from the multivariate linear regression revealed an association between foot size with FL, LAA, and navicular drop.The cut-off values presented in this study can be used to categorize people performing standing work into groups of different foot arch types. The results of this study are important for investigating a possible link between arch height and arch movement and the development of injuries.The structure and the movements of the foot arches are crucial for a person's wellbeing and for optimal function of the body [1]. Because the medial longitudinal arch (MLA) is the primary shock-absorbing structure of the foot, this area of the foot is particularly important for foot function [2]. To date, no firm conclusions can be made on the link between midfoot posture and the development of injuries. Finch [3] suggested conducting large scale prospective studies to investigate if the time to injury differs between individuals with different midfoot postures. In such a prospective cohort study, participants must be categorized into exposure groups based on their midfoot pos
%K Medial longitudinal arch
%K Longitudinal arch angle
%K Navicular drop
%K Feiss line
%U http://www.jfootankleres.com/content/5/1/3