Effect of orthopedic shoe and functional foot orthosis on center of pressure displacement and gait p

NewsBot · Aug 31, 2013

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Immediate effect of orthopedic shoe and functional foot orthosis on center of pressure displacement and gait parameters in juvenile flexible flat foot.
Aboutorabi A, Saeedi H, Kamali M, Farahmand B, Eshraghi A, Dolagh RS.
Prosthet Orthot Int. 2013 Aug 28

Background:Flat foot in children is a common deformity in which the medial longitudinal arch is reduced or eliminated.Objectives:The objective of this article was to compare flat foot and healthy children on the displacement of the center of pressure and walking parameters in children with two common orthoses (functional foot orthosis and medical shoe).

Study design:Randomized controlled trial.

Methods:This study included 30 children with flat foot and 20 healthy children as a control group. The step length and width, walking velocity, symmetry, and center of pressure displacements were recorded and compared functional foot orthosis with medical shoe for these variables.

Results:The results from center of pressure displacements showed that the regular shoe with functional foot orthosis caused a significant decrease in the level of displacement of center of pressure in flat foot patients. The findings indicated significant improvement in symmetry of steps and walking speed with the functional foot orthosis in comparison to the medical shoe in flat foot children.

Conclusion:Center of pressure displacement was decreased and percentage of gait symmetry and walking speed were increased by the use of regular shoes with functional foot orthosis in comparison to the medical shoes.

Clinical relevanceOrthopedic shoe is heavy and expensive and most of the children are reluctant to use it. This study on center of pressure displacement and gait parameters with orthopedic shoe and functional foot orthosis showed that prescription of the functional foot orthosis with regular shoes might be a good alternative for children with moderate flat foot.
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Admin2 · Aug 31, 2013

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NewsBot · Oct 14, 2014

Kinematic gait analysis in children with valgus deformity of the hindfoot.
Svoboda Z, Honzikova L, Janura M, Vidal T, Martinaskova E.
Acta Bioeng Biomech. 2014;16(3):89-93.

Deformities of the feet in children can influence not only optimal foot development but also the development of other body segments. The aim of the study was to compare the hip and pelvis kinematics in groups of children with and without valgus deformity of the hindfoot. Three groups of children participated in the study: bilateral hindfoot valgosity (11 children, age 5.4 ± 1.4 years), unilateral hindfoot valgosity (14 children, age 5.6 ± 1.6 years) and the control group (8 children, 4.8 ± 1.2). Hindfoot valgus angle was measured clinically during standing. Hindfoot valgosity was considered in the range of 6 to 20 degrees. Kinematic data from five trials for each child was obtained using the Vicon MX system (six infrared cameras, frequency 200 Hz, Vicon Motion Systems, Oxford, UK). The results of our study showed significantly higher pelvic anteversion during the whole gait cycle for both unilateral and bilateral hindfoot valgosity children and significantly higher hip external rotation during the first half of the stance phase in bilateral deformity. The differences in the hip and pelvis kinematics, when compared to the control group, are higher for the group with bilateral deformity than in the group with unilateral deformity.
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NewsBot · Oct 24, 2014

Effect of therapeutic insoles on the medial longitudinal arch in patients with flatfoot deformity: A three-dimensional loading computed tomography study
Masamitsu Kido, Kazuya Ikoma, Yusuke Hara, Kan Imai, Masahiro Maki, Takumi Ikeda, Hiroyoshi Fujiwara, Daisaku Tokunaga, Nozomu Inoue, Toshikazu Kubo
Clinical Biomechanics; Articles in Press

Highlights
•We investigated the effect of therapeutic insoles in patients with mild flatfoot.
•We examined tarsal bone rotational angles with accessory and therapeutic insoles.
•CT scans were performed on both feet under unloaded and full-body-loaded conditions.
•The CT scans were performed with accessory insoles and with therapeutic insoles.
•The therapeutic insoles suppressed the eversion of the talocalcaneal joint.
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Background
Insoles are frequently used in orthotic therapy as the standard conservative treatment for symptomatic flatfoot deformity to rebuild the arch and stabilize the foot. However, the effectiveness of therapeutic insoles remains unclear. In this study, we assessed the effectiveness of therapeutic insoles for flatfoot deformity using subject-based three-dimensional (3D) computed tomography (CT) models by evaluating the load responses of the bones in the medial longitudinal arch in vivo in 3D.

Methods
We studied eight individuals (16 feet) with mild flatfoot deformity. CT scans were performed on both feet under non-loaded and full-body-loaded conditions, first with accessory insoles and then with therapeutic insoles under the same conditions. Three-dimensional CT models were constructed for the tibia and the tarsal and metatarsal bones of the medial longitudinal arch (i.e., first metatarsal bone, cuneiforms, navicular, talus, and calcaneus). The rotational angles between the tarsal bones were calculated under loading with accessory insoles or therapeutic insoles and compared.

Findings
Compared with the accessory insoles, the therapeutic insoles significantly suppressed the eversion of the talocalcaneal joint.

Interpretation
This is the first study to precisely verify the usefulness of therapeutic insoles (arch support and inner wedges) in vivo.
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