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ABSTRACT: Aim
In anatomic studies of the embryo, it has been established that during the development of the lower limb, several changes in foot position can be observed defined as a temporary 'physiological clubfoot'. The aim of this study was to develop and test a measurement tool for objective documentation of the first trimester foot position in vivo and made an attempt to create a chart for first trimester foot position.Methods
We developed a virtual orthopedic protractor for measuring foot positioning using three-dimensional virtual reality visualization. Three-dimensional ultrasound volumes of 112 pregnancies of women examined during the first trimester were studied in a BARCO I-Space. The frontal angle (plantar flexion) and the lateral angle (adduction) between the leg and foot were measured from 8 until 13?weeks gestational age.Results
We observed that the frontal angle steadily decreases, whereas the lateral angle first increases, resulting in transient physiological clubfeet position at 10- to 11-week gestation, followed by a decrease to a normal foot position.Conclusion
A transient clubfoot position is present during the normal development of the lower limbs, and it has been measured in vivo for the first time. This study emphasizes that a diagnosis of congenital clubfoot should not be made in the first trimester of pregnancy.
SUBMITTER: Bogers H
PROVIDER: S-EPMC6587499 | biostudies-literature | 2019 Feb
REPOSITORIES: biostudies-literature
Bogers Hein H Rifouna Maria S MS Cohen-Overbeek Titia E TE Koning Anton H J AHJ Willemsen Sten P SP van der Spek Peter J PJ Steegers-Theunissen Régine P M RPM Exalto Niek N Steegers Eric A P EAP
The journal of obstetrics and gynaecology research 20181118 2
<h4>Aim</h4>In anatomic studies of the embryo, it has been established that during the development of the lower limb, several changes in foot position can be observed defined as a temporary 'physiological clubfoot'. The aim of this study was to develop and test a measurement tool for objective documentation of the first trimester foot position in vivo and made an attempt to create a chart for first trimester foot position.<h4>Methods</h4>We developed a virtual orthopedic protractor for measuring ...[more]