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PEDOBAROGRAPHIC PROFILES OF CHILDREN WITH CLUBFEET



Abstract

Clubfoot is a complex three-dimensional deformity that is difficult to assess by clinical examination and conventional radiography. Pedobarography has been established as a useful technique for measuring pressure profiles of the foot, however its utility in the clubfoot population has not been established. The purpose of the present study is to describe the pedobarographic profiles of children with clubfeet and to establish the significant variables when compared with aged-matched controls.

Pedobarographic profiles were obtained using the Tekscan HR Mat Pressure Measurement System and data was analyzed using a custom built LabView program. Clubfoot patients aged 18 months to four years (n = 190) were tested and compared to aged matched controls (n = 82). Each foot was divided into five segments (heel, medial and lateral midfoot, medial and lateral forefoot) and each segment was analyzed for timing of initiation of force, timing of termination of force, force distribution, and impulse. The mean and standard deviation were calculated for each variable. Clubfoot pedobarographic means were compared to the aged matched controls and significant variables were identified using Student’s paired t-test (p < .05).

Nine of twenty-five variables were found to be significantly different in the clubfoot population. The heel showed a reduced force and impulse. The lateral mid-foot showed an increased force and impulse with an earlier initiation and later termination of forces. The medial forefoot showed a decrease force and impulse with a later initiation of force.

Pedobarography has been found to be a useful tool in the evaluation of foot pathology, but its utility in the clubfoot population has yet to be established. In this study, we describe the pedobarographic profiles of children with clubfeet and have noted significant differences when compared to age-matched controls.

Correspondence should be addressed to: Cynthia Vezina, Communications Manager, COA, 4150-360 Ste. Catherine St. West, Westmount, QC H3Z 2Y5, Canada